research-article | 19-March-2020
In the context of food security for an ever increasing global population, nematodes pose serious threat to agricultural crops worldwide (Miamoto et al., 2017). There are nearly 4,100 species of plant parasitic nematodes (PPN) reported to date that are currently a serious constraint for global food security (Jaouannet et al., 2013) causing yield loss of about 30% in susceptible crop varieties annually (tomatoes, eggplant, and melons) (Padgham et al., 2004; Collange et al., 2011). Among these
Anusha Pulavarty,
Karina Horgan,
Thomais Kakouli-Duarte
Journal of Nematology, Volume 52 , 1–10
research-article | 06-November-2020
.
Each year more than 100 million strawberry transplants are shipped to Florida predominantly from California, North Carolina, and Canada to be planted in the winter strawberry production fields. Strawberry transplants coming into Florida from out-of-state nurseries often harbor many pathogens including nematodes (Noling and Whidden, 2010; Nyoike et al., 2012; Oliveira et al., 2017; Forcelini and Peres, 2018). The nematodes associated with the shipped strawberry transplants are foliar nematode
Churamani Khanal,
Mengyi Gu,
Natalia A. Peres,
Johan A. Desaeger
Journal of Nematology, Volume 52 , 1–10
Article | 21-July-2017
The new simple technique of hot fixation and a method for processing a mass quantity of nematodes to prepare nematode collection slides for taxonomic and ecological purposes, combined with an abrupt reduction of the set of procedures caused by the ‘‘cocktail’’ principle (a stratification of layers with a gradient of glycerol concentrations), are described.
ALEXANDER Y. RYSS
Journal of Nematology, Volume 49 , ISSUE 1, 27–32
research-article | 15-April-2019
Turfgrass (Cynodon spp.) is an important horticultural crop in the Southeastern United States. Golf courses, athletic fields, and lawns utilize turfgrass as a playing surface and as ground cover. Turfgrass cultivation, sales, and maintenance is a billion-dollar industry in Florida (Haydu et al., 2006). Plant-parasitic nematodes are an important pathogen of turfgrass. Nematode feeding can lead to stunted roots and even death of the plant (Crow, 2008). As an aesthetic crop, turfgrass managers
Benjamin D. Waldo,
Zane J. Grabau,
Tesfamariam M. Mengistu,
William T. Crow
Journal of Nematology, Volume 51 , 1–12
research-article | 30-November-2020
toxicity, which may be as a result of excessive fertilization (Sun et al., 2016), affects not only plants, but also insects (Mogren and Trumble, 2010) and microorganisms, either beneficial or nonbeneficial. One such group of beneficial microorganisms is entomopathogenic nematodes (EPNs). The EPN infective juveniles (IJs) seek hosts in the soil and penetrate through natural openings, such as mouth, anus, or spiracles, to reach the hemocoel, where the symbiotic bacterial cells are released (Salvadori et
Zanele Khathwayo,
Tshimangadzo Ramakuwela,
Justin Hatting,
David I. Shapiro-Ilan,
Nicolene Cochrane
Journal of Nematology, Volume 53 , 1–12
research-article | 30-November-2018
several phytosanitary problems, among them, phytopathogenic nematodes (Rosa et al., 2015).
Plant parasitic nematodes have become one of the main problems in the olericulture cultivation in general. Among these, the Meloidogyne spp. genus representes the group of greater importance (Silva et al., 2014). The species of this genus can cause 100% losses in the production and therefore are considered one of the most harmful in the olericulture cultivation (Kurozawa and Pavan, 2005; Perry and Moens, 2006
Alixelhe Pacheco Damascena,
Júlio César Antunes Ferreira,
Marylia Gabriella Silva Costa,
Luis Moreira de Araujo Junior,
Silvia Renata Siciliano Wilcken
journal of nematology, Volume 51 , 1–8
research-article | 30-November-2020
Plant-parasitic nematodes (PPNs) are one of the major constraints to crop production, and especially in high-value vegetable and fruit crops, they can cause significant economic yield loss, estimated to be more than US$100 billion annually (Bernard et al., 2017). Chemical soil fumigants have been in use for more than a century now, and remain the standard practice in many crops, especially fruits and vegetables. Although many of the early fumigants have been banned, the ones that have managed
Hung Xuan Bui,
Johan A. Desaeger
journal of nematology, Volume 53 , 1–12
research-article | 30-November-2019
Entomopathogenic nematodes (EPNs), which occur naturally in soils, are obligate parasites of soil-inhabiting insects. EPNs were first described in 1923 with the identification of Aplectana kraussei Steiner (now known as Steinernema kraussei) (Nguyen and Hunt, 2007). Steinernematidae and Heterorhabditidae are two major families of EPNs with potential for managing insect populations (Kaya and Gaugler, 1993; Georgis et al., 2006). EPNs are associated with endosymbiotic bacteria belonging to the
Ramandeep K. Sandhi,
Ratnasri Pothula,
Satyendra K. Pothula,
Byron J. Adams,
Gadi V.P. Reddy
Journal of Nematology, Volume 52 , 1–11
research-article | 24-April-2020
Root-knot nematodes (Meloidogyne spp.) are obligate, sedentary endoparasites that can infect both the below- and above-ground parts of many crops at different developmental stages. Meloidogyne spp. are serious pathogens of multiple vegetable crops in the southern United States and worldwide (Johnson et al., 1992; Jones et al., 2013; Hajihassani, Davis, and Timper, 2019; Hajihassani, Rutter, and Luo, 2019). In Georgia, more than 66% of vegetable growing areas are infested with at least one
Negin Hamidi,
Abolfazl Hajihassani
Journal of Nematology, Volume 52 , 1–10
research-article | 19-March-2020
Entomopathogenic nematodes (EPNs) species belonging to the genera Steinernema Travassos, 1927 and Heterorhabditis Poinar, 1975 and their symbiotic bacteria from genera Xenorhabdus and Photorhabdus, respectively, are lethal parasites of soil inhibiting insects (Shapiro-Ilan et al., 2017). Globally, EPNs are being widely researched as promising biocontrol agents for wide range of agricultural pests (Lacey et al., 2015). Because of the increasing awareness of EPN as an effective non-chemical
Sumeet Kour,
Uma Khurma,
Gilianne Brodie,
Selcuk Hazir
journal of nematology, Volume 52 , 1–17
Article | 05-December-2017
Protogamasellus mica was extracted from a sugarcane field in Australia and cultured on bacterial-feeding nematodes. Studies with various nematodes in laboratory arenas showed that one mite and its progeny reduced nematode numbers by between 26 and 50 nematodes/day. A bacterivore (Mesorhabditis sp.), a fungivore (Aphelenchus avenae), and two plant parasites (root-knot nematode, Meloidogyne javanica and root-lesion nematode, Pratylenchus zeae) were all reduced at much the same rate despite the
GRAHAM R. STIRLING,
A. MARCELLE STIRLING,
DAVID E. WALTER
Journal of Nematology, Volume 49 , ISSUE 3, 327–333
research-article | 13-April-2020
Pseudomonas syringae pv. tomato DC3000 (Bhardwaj et al., 2011), spore formation, and spore dispersal of fungal pathogen Hyaloperenosposra arabidopsidis is regulated by host circadian rhythm (Wang et al., 2011). Attachment and motility of bacterial pathogen Agrobacterium tumefaciens to tomato roots follow a diurnal pattern (Oberpichler et al., 2008).
Root-knot nematodes (RKN) infect almost all cultivated plants and are one of the most damaging plant-parasitic nematodes causing devastating agricultural
Shova Mishra,
Peter DiGennaro
Journal of Nematology, Volume 52 , 1–8
research-article | 16-April-2020
, stunting, and chlorosis (Lawrence and McLean, 2001; Blasingame et al., 2002; Robinson, 2007).
Rotating to a non-host crop may provide short-term suppression of plant-parasitic nematodes in cotton production (Starr et al., 2002). For instance, crop rotation to a non-host like peanut (Arachis hypogaea) or corn (Zea mays) is an effective means to manage RN (Moore and Lawrence, 2012). Rotation to a non-host for one or more years can reduce RN populations below economic thresholds into the subsequent cotton
Lesley A. Schumacher,
Zane J. Grabau,
David L. Wright,
Ian M. Small,
Hui-Ling Liao
Journal of Nematology, Volume 52 , 1–14
research-article | 30-November-2019
scale pest (Greathead, 1970; Msechu and Keswani, 1978; Katundu and Ramadhani, 1988). Other studies reported the effect of the white grubs, Cochliotis melolonthoides (Coleoptera: Scarabaeidae), which feed underground on sugarcane roots (Jepson, 1956; Cock and Allard, 2013), and accounted for an annual economic loss of about 25 to 50% at the TPC Limited, Kilimanjaro (Paray et al., 2012). However, no investigation on the diversity and the effect of nematodes on sugarcane of Tanzania has been done
Phougeishangbam Rolish Singh,
Beatrice E. Kashando,
Marjolein Couvreur,
Gerrit Karssen,
Wim Bert
Journal of Nematology, Volume 52 , 1–17
research-article | 30-November-2021
Cannabis spp. (hemp) and their desirable products need little introduction. Plants have been dispersed by humans for millenia and have many uses (Clarke and Merlin, 2013). The presence and use of psychoactive chemicals in the flower buds of some selections led to widespread regulation in much of the world in the early twentieth century. Strict regulation began before the full recognition of the pathogenic roles of plant-parasitic nematodes on crop yield and quality. Consequently, the current
Ernest C. Bernard,
Angel G. Chaffin,
Kimberly D. Gwinn
Journal of Nematology, Volume 54 , 1–18
Article | 05-December-2017
Plant-parasitic nematodes are important agricultural pests and often cause serious crop losses. Novel, environmental friendly nematicides are urgently needed because of the harmful effects of some existing nematicides on human health. 5-Aminolevulinic acid (ALA) was reported as a potential biodegradable herbicide, insecticide, or plant-growth promoting agent. Lack of information on ALA against plant-parasitic nematodes prompted this investigation to determine the effects of ALA on Meloidogyne
FEIXUE CHENG,
JIAN WANG,
ZHIQIANG SONG,
JU’E CHENG,
DEYONG ZHANG,
YONG LIU
Journal of Nematology, Volume 49 , ISSUE 3, 295–303
Research Article | 17-October-2018
Information about the effects of glyphosate on nematodes is limited and contradictory, while none existing for South African agricultural fields. The abundance and identity of non-parasitic nematodes in the rhizospheres of commercial glyphosate-tolerant and conventional (non-glyphosate-tolerant), soybean cultivars from cultivated fields, and adjacent natural vegetation (reference system) were obtained for two growing seasons. The impact of glyphosate was also investigated on non-parasitic
Akhona Mbatyoti,
Mieke Stefanie Daneel,
Antoinette Swart,
Dirk de Waele,
Hendrika Fourie
Journal of Nematology, Volume 50 , ISSUE 3, 243–260
research-article | 30-November-2020
Plant-parasitic nematodes are major pathogens to sugarcane worldwide (Ramouthar and Bhuiyan, 2018). In Australia, they cause 5–20% yield loss/year, costing over $80 million in productivity in Australia (Blair and Stirling, 2007). Lesion nematodes, Pratylenchus spp, predominantly P. zeae, are the most important nematodes pests of sugarcane in Australia, found in all sugarcane regions, and can cause significant yield loss (Blair and Stirling, 2007; Blair et al., 1999a, b).
Cultural methods such
S. A. Bhuiyan,
K. Garlick
Journal of Nematology, Volume 53 , 1–10
Article | 21-July-2017
An aberrant specimen of Rhynchophorus ferrugineus (Coleoptera: Dryophthoridae) also known as red palm weevil (RPW), the most economically important insect pest of palms in the world, was found among a batch of conspecifics reared for research purposes. A morphological analysis of this weevil revealed the presence of nematodes associated with a structured cuticle defect of the thorax. These nematodes were not able to be cultured, but were characterized by molecular analysis using 28S
MANUELA CAMEROTA,
GIUSEPPE MAZZA,
LYNN K. CARTA,
FRANCESCO PAOLI,
GIULIA TORRINI,
CLAUDIA BENVENUTI,
BEATRICE CARLETTI,
VALERIA FRANCARDI,
PIO FEDERICO ROVERSI
Journal of Nematology, Volume 48 , ISSUE 1, 1–6
Article | 03-December-2017
Plant-parasitic nematodes such as Longidorus euonymus and Helicotylenchus multicintctus are species widely distributed in central Europe as well as in Mediterranean area. In Greece, both species have been previously reported but no morphometrics or molecular data were available for these species. Nematode surveys in the rhizosphere of grapevines in Athens carried out in 2016 and 2017, yielded a Longidorus species identified as Longidorus euonymus. Similarly, a population of Helicotylenchus
EMMANUEL A. TZORTZAKAKIS,
CAROLINA CANTALAPIEDRA-NAVARRETE,
PABLO CASTILLO,
JUAN E. PALOMARES-RIUS,
ANTONIO ARCHIDONA-YUSTE
Journal of Nematology, Volume 49 , ISSUE 3, 233–235
research-article | 17-March-2020
Banana (Musa spp. L.) is a key food crop in rural and urban areas of the humid tropics, with an annual global production of up to 100mn tons (FAO, 2015). In East Africa, banana is widely consumed and provides approximately 10% of the calorific intake for more than 70mn people (Kilimo Trust, 2012). In Tanzania, in particular, it is a staple food and cash crop for more than 30% of the total population (Nkuba, 2007).
Plant-parasitic nematodes (PPN) are the principal pests of banana in Tanzania
Doreen M. Mgonja,
Gladness E. Temu,
Joseph C. Ndunguru,
Magreth F. Mziray,
Sylvester L. Lyantagaye,
Nessie D. Luambano
Journal of Nematology, Volume 52 , 1–8
Research Article | 17-October-2018
An alternative control method to the use of chemical insecticides against soil dwelling insect pests is the application of entomopathogenic nematodes formulated in alginate beads for enhanced shelf life. The aim was to compare the benefit on nematode survival and infectivity of: (i) pre-conditioning of juveniles, and (ii) coating of alginate beads. The nematodes Steinernema glaseri, Steinernema carpocapsae, and Heterorhabditis bacteriophora were reproduced in last instar larvae of the wax moth
Jaime Ruiz-Vega,
Carlos I. Cortés-Martínez,
Cipriano García-Gutiérrez
Journal of Nematology, Volume 50 , ISSUE 3, 273–280
research-article | 21-October-2020
Nematodes occupy trophic levels in a food web that includes natural enemies such as nematophagous fungi (Kaya and Koppenhöfer, 1996), ectoparasitic bacteria (Enright and Griffin, 2005; El-Borai et al., 2005), and soil microarthropods (Walter and Ikonen, 1989). Mites, springtails, and other microarthropods are major components of soil biodiversity and food web function. Numerous reports indicate that these generalist predators dominate the higher trophic levels that regulate virtually all
Alexandros Dritsoulas,
Larry W. Duncan
Journal of Nematology, Volume 52 , 1–9
research-article | 30-November-2020
Entomopathogenic nematodes (EPNs) species belonging to the genera Steinernema (Travassos, 1927) and Heterorhabditis (Poinar, 1975) and their symbiotic bacteria from genera Xenorhabdus and Photorhabdus, respectively, are obligate parasites of soil inhibiting insects (Shapiro-Ilan et al., 2017). Because of the increasing awareness of EPN as an effective non-chemical alternative to control insect pests, many surveys have been and are being carried out across the globe to isolate new species and/or
Sumeet Kour,
Uma Khurma,
Gilianne Brodie
Journal of Nematology, Volume 53 , 1–20
research-article | 30-November-2019
The genus Paratylenchus (Ciobanu et al., 2003) is commonly known as pin nematodes that are ectoparasites and can be frequently found at high density in perennial plants, hop gardens, orchards, or forest trees (Ghaderi et al., 2016; Ghaderi, 2019). Although sometimes plants infected by Paratylenchus species show no specific symptoms, large populations of Paratylenchus spp. affect the absorption capacity of roots and the general physiology of plants (Ghaderi, 2019). According to Talavera and
Thi Mai Linh Le,
Huu Tien Nguyen,
Thi Duyen Nguyen,
Quang Phap Trinh
Journal of Nematology, Volume 52 , 1–4
research-article | 30-November-2018
Worldwide, alfalfa (Medicago sativa L.), a flowering plant belonging to the family Fabaceae, is cultivated as a forage crop (Tucak et al., 2008). It is the most important forage crop in Iran due to its superior feeding value for cattle, which is the main meat/protein food source (Tucak et al., 2008). The genus Medicago comprises many species, with up to 23 being cultivated in Iran (Ghanavati et al., 2007).
A wide range of plant-parasitic nematodes have been associated with alfalfa crops in
Ebrahim Shokoohi,
Phatu William Mashela,
Fahimeh Iranpour
Journal of Nematology, Volume 51 , 1–14
research-article | 30-November-2019
of insect mass production in laboratories, among other causes (Cermelli et al., 2002). For those reasons, there is a need to study biological alternatives to reduce the populations of PHM in Venezuela.
Entomopathogenic nematodes (EPNs) have been used in biological control programs for crops worldwide because of their effectiveness, time of response, innocuousness to mammals, and relative simplicity of mass production (Kaya et al., 2006). Some laboratories in Venezuela work actively on these
Yvan Fuenmayor,
Edgar Portillo,
Brynelly Bastidas,
Mayamarú Guerra,
Ernesto San-Blas
Journal of Nematology, Volume 52 , 1–7
research-article | 30-November-2020
The root-knot nematodes (RKN) of the genus Meloidogyne represent one of the most damaging and agriculturally important groups of plant-parasitic nematodes. Meloidogyne incognita, M. javanica and M. arenaria are three major tropical RKN species, which are globally distributed and polyphagous pests of many agricultural crops. These nematodes together with several other species are commonly referred to the tropical RKN complex (Álvarez-Ortega et al., 2019).
Early and rapid detection of RKN in soil
Sergei A. Subbotin,
Julie Burbridge
Journal of Nematology, Volume 53 , 1–11
Research Article | 26-September-2018
Meloidogyne spp. are the most economically important species of plant-pathogenic nematodes. Plant resistance and crop rotation are the main nematode management methods. Thus, the objective was to evaluate the resistance of seven wheat genotypes, five oat genotypes, ten sorghum hybrids, and three sorghum–sudangrass genotypes to Meloidogyne incognita and Meloidogyne javanica. The crops were sowed in pots with an auto-claved substrate. A single plant/pot was left after thinning. The soil was
ANDRESSA LIMA DE BRIDA,
ÉRIKA CRISTINA SOUZA DA SILVA CORREIA,
BÁRBARA MONTEIRO DE CASTRO E CASTRO,
JOSÉ COLA ZANUNCIO,
SÍLVIA RENATA SICILIANO WILCKEN
Journal of Nematology, Volume 49 , ISSUE 4, 386–389
research-article | 06-March-2021
of Agriculture National Agriculture Statistics Service USDA NASS, 2019). Tremendous potential for expansion exists with support for local food production systems. Improving pest and disease management strategies could further bolster yields and stimulate agribusinesses in Hawaii.
Plant-parasitic nematodes are detrimental pests that adversely affect plant health and yields in fruit and vegetable crops. Of particular importance are root-knot (Meloidogyne spp.) and reniform (Rotylenchulus reniformis
Philip Waisen,
Koon-Hui Wang,
Jensen Uyeda,
Roxana Y. Myers
Journal of Nematology, Volume 53 , 1–15
Article | 05-December-2017
Superparasitism is a common phenomenon in mosquito-parasitic mermithid nematodes. Multiple nematodes are needed in a single host to produce males. Host selection behavior and intraspecific competition among Romanomermis iyengari and Strelkovimermis spiculatus were investigated against their host, Culex pipiens pipiens in laboratory experiments. In a choice assay between previously infected and uninfected host larvae, infectious preparasites of both nematode species could distinguish not only
MANAR SANAD,
JENNIFER S. SUN,
MUHAMMAD S. M. SHAMSELDEAN,
YI WANG,
RANDY GAUGLER
Journal of Nematology, Volume 49 , ISSUE 3, 316–320
research-article | 14-December-2020
Nematodes occupy most terrestrial habitats on earth (Liu et al., 2019), even the furthest reaches of caves (Du Preez et al., 2017) and deep underground mines (Borgonie et al., 2011). Estimates also indicate that nematodes represent 80% of all multicellular organisms (Eisenhauer and Guerra, 2019; Van Den Hoogen et al., 2019). However, despite their omnipresent distribution and dominating abundance, many nematode communities are poorly studied with the majority of species remaining undescribed
Chantelle Girgan,
Gerhard du Preez,
Mariette Marais,
Antoinette Swart,
Hendrika Fourie
Journal of Nematology, Volume 52 , 1–22
research-article | 16-April-2020
detectable level of this nematode presents a risk of damage (McSorley et al., 1992).
Peanut producers rely on crop rotation, resistant cultivars, and nematicide application to manage PRKN. Peanut cultivars (TifNV High O/L, Georgia 14 N, and Tifguard) that are highly resistant to root-knot nematodes are available and derive resistance from the parental cultivar COAN (Holbrook et al., 2008; Branch et al., 2014; Holbrook et al., 2017). These resistant cultivars are not widely adopted as a majority of
Zane J. Grabau,
Mark D. Mauldin,
Alemayehu Habteweld,
Ethan T. Carter
Journal of Nematology, Volume 52 , 1–10
research-article | 29-March-2019
available in the national market. However, the risk of generating populations of ticks resistant to the ixodicides is higher if its use is not handled as indicated by the standards (Rodríguez-Vivas et al., 2014). Nowadays, there are very few studies on the biological control of ticks using entomopathogenic nematodes (Kocan et al., 1998).
Entomopathogenic nematodes (EPNs) are efficient agents of biological control, and are compatible with some chemical pesticides (Kaya and Gaugler, 1993). The
Teodulfo Aquino-Bolaños,
Jaime Ruiz-Vega,
Yolanda D. Ortiz Hernández,
Julio C. Jiménez Castañeda
Journal of Nematology, Volume 51 , 1–10
Research Article | 03-December-2018
Millipedes may cause unexpected damage when they are introduced to new locations, becoming invaders that leave behind their old parasites and predators. Therefore, it was interesting to find numerous rhabditid nematodes within the gut of the invasive phytophagous millipede Chamberlinius hualienensis Wang, 1956 (Diplopoda, Paradoxosomatidae) from Hachijojima (Japan) in November, 2014. This millipede originated in Taiwan but was discovered in Japan in 1986. The nematodes were identified as
L. K. Carta,
W. K. Thomas,
V. B. Meyer-Rochow
Journal of Nematology, Volume 50 , ISSUE 4, 479–486
research-article | 24-April-2020
Pomegranate (Punica granatum L.) is an exotic fruit in Peru that has unique pharmacological characteristics including several bioactive compounds. Its cultivation is intended for ornamentation, fruit production for fresh consumption, or processed products, such as juices, syrups, and jellies (Saroj et al., 2008), among others.
Plants can be attacked by pests, diseases, and plant-parasitic nematodes, which can qualitatively and quantitatively impair production (Dias-Arieira et al., 2010; Sikora
Ricardo Andreé Vega-Callo,
María Yaquelin Mendoza-Lima,
Nataly Ruth Mamani-Mendoza,
Leslie Sharon Lozada-Villanueva,
Juan José Tamo-Zegarra,
Teodocia Gloria Casa-Ruiz,
Cristiano Bellé
Journal of Nematology, Volume 52 , 1–3
research-article | 30-November-2019
is a common weed in agronomic crops and is particularly important because its seeds contain animal toxins (Furlan et al., 2012).
Weeds often serve as alternative hosts to plant-parasitic nematodes, thereby increasing their incidence and severity. In addition, they reduce the efficacy of nematode management tactics. For example, nutsedges and plant-parasitic nematodes are two of the most common soilborne pest problems in Florida vegetable production and often occur concomitantly (Rich et al., 2003
Maria de Lourdes Mendes,
Donald W. Dickson,
William T. Crow
Journal of Nematology, Volume 52 , 1–9
Research Article | 26-September-2018
Seven needle nematode species of the genus Longidorus have been reported in Ukraine. Nematological surveys for needle nematodes were carried out in Ukraine between 2016 and 2017 and two nematode species of Longidorus (L. caespiticola and L. poessneckensis) were collected from natural and anthropogenically altered habitats on the territory of Opillia and Zakarpattia in Ukraine. Nematodes were extracted from 500 cm3 of soil by modified sieving and decanting method. Extracted specimens were
SOLOMIA SUSULOVSKA,
PABLO CASTILLO,
ANTONIO ARCHIDONA-YUSTE
Journal of Nematology, Volume 49 , ISSUE 4, 396–402
research-article | 21-October-2020
. soybean, wheat, barley, maize, quinoa, potato, sugarbeet, sugarcane, and peanut) (Bajwa et al., 2019).
C. album is more problematic than other species of the genus, as the is more widespread and infests more number of crops, and it also acts as an alternate host of several crop pests and pathogens (Bellé et al., 2019). In this context, several weed species have been reported to host root-knot nematodes (Meloidogyne spp. Göldi, 1887). This genus of root-knot nematodes has the largest impact on major
Jorge Airton Gómez-Chatata,
Teodocia Gloria Casa-Ruiz,
Juan José Tamo-Zegarra,
Cristiano Bellé
Journal of Nematology, Volume 52 , 1–4
research-article | 30-March-2020
subterranean organ, the corm can come into contact with different organisms such as fungi, bacteria, viruses and nematodes. Most information concerning nematodes associated with saffron, refers to nematodes collected in the soil around the roots of Crocus sativus (Fotedar and Handoo, 1977; Mahdikhani and Alvani, 2013; Sheikh et al., 2014; Cirujeda et al., 2016; Alvani et al., 2017; Hassan and Ahangar, 2018).
In this study, Bursaphelenchus fungivorus (Franklin and Hooper, 1962) is reported for the first
Giulia Torrini,
Agostino Strangi,
Stefania Simoncini,
Maria Luppino,
Pio Federico Roversi,
Leonardo Marianelli
Journal of Nematology, Volume 52 , 1–11
research-article | 30-November-2018
traditionally used as a treatment for diabetes mellitus, hypertension, stomach troubles, hypertension, inflammation, bronchitis, hemorrhoids, hepatosis, and as an analgesic and antipyretic (Das and Chakraborty, 2011; Murtl et al., 2012).
Medicinal plants can be attacked by pests, diseases, and plant-parasitic nematodes, which can qualitatively and quantitatively impair curative properties and production (Bellé et al., 2017; Pandey, 2017). Among the plant-parasitic nematodes, the most important genus is
Cristiano Bellé,
Rodrigo Ferraz Ramos,
Andressa Lima de Brida,
Tiago Edu Kaspary
journal of nematology, Volume 51 , 1–3
Article | 24-July-2017
Cyst nematodes are serious plant-parasitic pests which could cause severe yield losses and extensive damage. Since there is still very little information about error of population density estimation in small field plots, this study contributes to the broad issue of population density assessment. It was shown that there was no significant difference between cyst counts of five or seven bulk samples taken per each 1-m2 plot, if average cyst count per examined plot exceeds 75 cysts per 100 g of
VESNA ZUPUNSKI,
RADIVOJE JEVTIC,
VESNA SPASIC JOKIC,
LJUBICA ZUPUNSKI,
MIRJANA LALOSEVIC,
MIHAJLO CIRIC,
ZIVKO CURCIC
Journal of Nematology, Volume 49 , ISSUE 2, 150–155
research-article | 24-April-2020
Plant-parasitic nematodes are an important limiting factor in vegetable production, and in many areas a major factor requiring extensive use of pesticides. Root-knot nematodes (RKNs) of the genus Meloidogyne (Göldi, 1887), which their population increase to damaging levels within a few seasons under susceptible crops, are so common in subtropical and tropical vegetable production that frequently they are taken to represent “nematodes” in general (Sikora and Fernandez, 2005). The populations of
Reza Ghaderi,
Ali Asghar Dehghan,
Abbas Mokaram Hesar,
Akbar Karegar
Journal of Nematology, Volume 52 , 1–13
research-article | 30-November-2018
The use of biological agents, such as entomopathogenic nematodes (EPN) of the genera Heterorhabditis and Steinernema, is one of a range of tools for biological control. These nematode species are obligate parasites, lethal, and easy to apply (San-Blas, 2013). They can be mass-produced using in vivo or in vitro (solid or liquid) culture methods (Gaugler and Han, 2002; Rahoo et al., 2019), but in vivo is the method of choice for laboratory-scale production (e.g. for generating material for field
Régina Kotchofa,
Hugues Baimey
journal of nematology, Volume 51 , 1–15
Article | 21-July-2017
Spiral nematode species of the genus Rotylenchus have been reported on olive (Olea europaea L.) in several Mediterranean countries (Castillo et al., 2010; Ali et al., 2014). Nematological surveys for plant-parasitic nematodes on olive trees were carried out in Tunisia between 2013 and 2014, and two nematode species of Rotylenchus were collected from the rhizosphere of olive cv. Chemlali in several localities of Tunisia (Tables 1,2). Twenty-two soil samples of 3 to 4 kg were collected with a
ILHEM GUESMI-MZOUGHI,
ANTONIO ARCHIDONA-YUSTE,
CAROLINA CANTALAPIEDRA-NAVARRETE,
HAJER REGAIEG,
NAJET HORRIGUE-RAOUANI,
JUAN E. PALOMARES-RIUS,
PABLO CASTILLO
Journal of Nematology, Volume 48 , ISSUE 3, 136–138
Article | 21-July-2017
Members of the genus Scutellonema can cause substantial crop losses to ornamental and cultivated plants directly by feeding ectoparasitically on plant roots (Bridge et al., 2005; Coyne et al., 2006). In May 2015, a soil sample from a house garden from Heraklion city in Crete, Greece, was sent for diagnosis of plant-parasitic nematodes. In this place, there had been cactus (Opuntia sp.) plants (probably imported), which were uprooted 3 to 4 years earlier. After that, the area was
EMMANUEL A. TZORTZAKAKIS,
CAROLINA CANTALAPIEDRA-NAVARRETE,
ANTONIO ARCHIDONA-YUSTE,
JUAN E. PALOMARES-RIUS,
PABLO CASTILLO
Journal of Nematology, Volume 48 , ISSUE 1, 7–7
research-article | 30-November-2019
chemical pesticides for the control of white grubs is causing increased resistance of this insect pest and has resulted in negative effects on the environment and human health, which make necessary the development of effective biological control products with low impact on the environment and human health (Cory and Franklin, 2012; Chandel et al., 2019; Karabörklü et al., 2018).
The combined application of entomopathogenic fungi (EPF) and entomopathogenic nematodes (EPN) through a formulated product is
Jaime Ruiz-Vega,
Carlos I. Cortés-Martínez,
Teodulfo Aquino-Bolaños,
Pastor T. Matadamas-Ortíz,
Cipriano García-Gutiérrez,
José Navarro-Antonio
Journal of Nematology, Volume 52 , 1–8
Article | 21-July-2017
with chlorpyrifos and a water-only control in 2014 and 2015. Additionally, types of spray equipment were compared: nematodes were applied via boom sprayer, handgun, or trunk sprayer. To control for effects of application method or nematode source, in vivo laboratory-grown S. carpocapsae, applied using a watering can, was also included. Treatment effects were assessed 39 d (2014) or 19 d (2015) later by measuring percentage of trees still infested, and also number of surviving S. exitiosa larvae per
DAVID I. SHAPIRO-ILAN,
TED E. COTTRELL,
RUSSELL F. MIZELL,
DAN L. HORTON
Journal of Nematology, Volume 48 , ISSUE 3, 170–176
research-article | 30-November-2019
) and Drake (Fig. 1A), in Lake County, FL and submitted for nematode certification at the Florida Department of Agriculture and Consumer Services, Division of Plant Industry, Gainesville, FL (FDACS-DPI). Initially, nematodes were extracted from soil and roots, and species identification performed using FDACS-DPI’s standard protocol for identifying Meloidogyne enterolobii Yang and Eisenback, 1981, a COI-based qPCR assay (Kiewnick et al., 2015; Braun-Kiewnick et al., 2016) with slight modifications
M. R. Moore,
J. A. Brito,
S. Qiu,
C. G. Roberts,
L. A. Combee
Journal of Nematology, Volume 52 , 1–4
research-article | 30-November-2018
Phytopathogenic nematodes are microscopic roundworms that develop obligate parasitic relationships with plants. Once sedentary endoparasitic nematodes reach a root surface, they insert their stomatostylet, enter root tissue, establish a feeding site near the vascular cylinder, and ingest cytosolic nutrients (Mitchum et al., 2013; Fosu-Nyarko and Jones, 2016). Damage caused by PPN is estimated to result in an annual loss of ~14% of world crop productions (Nicol et al., 2011), needing an urgent
Wenshan Liu,
Alexis L. Jones,
Heather N. Gosse,
Kathy S. Lawrence,
Sang-Wook Park
journal of nematology, Volume 51 , 1–10
research-article | 30-November-2020
Entomopathogenic nematodes (EPN) of the genera Steinernema Travassos and Heterorhabditis Poinar are natural parasites of many insects (Kaya and Gaugler, 1993). The infective juveniles (IJ) of EPN harbor the symbiotic bacteria Xenorhabdus Thomas and Poinar and Photorhabdus Boemare in their intestines (Boemare, 2002; Poinar, 1990; Qiu et al., 2009). The EPN-bacteria complex actively searches, infects and kills the host, propagates in the host, and produces progeny to start a new life cycle after
Xun Yan,
Guimei Chen,
Yuqing Chen,
Bingjiao Sun,
Xinghui Gu,
Weibing Ruan,
Richou Han
Journal of Nematology, Volume 53 , 1–12
research-article | 30-November-2019
The genus Xiphinema Cobb, 1913, commonly known as dagger nematodes, are migratory ectoparasitic nematodes that damage numerous wild and cultivated plants through direct feeding on the root and transmission of plant viruses (Taylor and Brown, 1997; Perry and Moens, 2013). This genus is distributed worldwide and is divided in two groups, Xiphinema americanum group and non-Xiphinema americanum group, with more than 260 valid species (Gutiérrez-Gutiérrez et al., 2012). The conserved morphology and
Huu Tien Nguyen,
Thi Duyen Nguyen,
Thi Mai Linh Le,
Quang Phap Trinh
Journal of Nematology, Volume 52 , 1–4
Research Article | 03-December-2018
both trials. Although both VCTs did not reduce the number of M. incognita and R. reniformis in soil, weed VCT did increase omnivorous nematodes in the second trial, indicating a gradual improvement of soil food web structure through VCT drenching over time. Overall, performance of weed VCT was more consistent than vegetable VCT for plant-parasitic nematodes suppression.
Xiaodong You,
Motoaki Tojo,
Shelby Ching,
Koon-Hui Wang
Journal of Nematology, Volume 50 , ISSUE 4, 569–578
research-article | 30-November-2019
Snow for which 60% parasitism was observed in hawthorn fruit. Entomopathogenic nematodes may be another alternative approach for the biological control of R. pomonella.
Entomopathogenic nematodes (EPNs) from genera Steinernema and Heterorhabditis have the ability to infect and kill insect pests and they are naturally found in all types of agricultural and natural soils (Grewal et al., 2005). Entomopathogenic nematodes are associated with symbiotic bacteria, i.e. Xenorhabdus spp. bacteria are
Muhammad Usman,
Sehrish Gulzar,
Waqas Wakil,
Jaime C. Piñero,
Tracy C. Leskey,
Laura J. Nixon,
Camila Oliveira-Hofman,
Shaohui Wu,
David Shapiro-Ilan
Journal of Nematology, Volume 52 , 1–9
research-article | 30-November-2020
Root-knot nematodes belonging to the genus Meloidogyne are one of the most damaging plant-parasitic nematodes of the world (Jones et al., 2013). These nematodes parasitize thousands of plant species and cause significant yield loss (Agrios, 2005; CABI, 2020; Jones et al., 2013). Among more than 100 known species, the tropical (Meloidogyne arenaria (Chitwood, 1949; Neal, 1889), Meloidogyne incognita (Chitwood, 1949; Kofoid and White, 1919), and Meloidogyne javanica (Chitwood, 1949; Treub, 1885
Ke Long Phan,
Thi Mai Linh LE,
Huu Tien Nguyen,
Thi Duyen Nguyen,
Quang Phap Trinh
Journal of Nematology, Volume 53 , 1–8
research-article | 30-November-2019
). The most important yam species cultivated for food are D. rotundata Poir., D. cayenensis Lam., D. alata L., D. dumetorum (Kunth) Pax., D. bulbifera L. and D. esculenta (Lour.) Burk. Also, yam plays an important socio-cultural role among communities and its cultivation and sale serve as a major income-generating activity for the people in yam-growing areas (Onwueme and Charles, 1994). Yam production is constrained by numerous biotic factors, however, of which plant-parasitic nematodes are among the
Yao A. Kolombia,
Oluwadamilola Ogundero,
Emmanuel Olajide,
Nicole Viaene,
P. Lava Kumar,
Danny L. Coyne,
Wim Bert
Journal of Nematology, Volume 52 , 1–25
Article | 21-July-2017
of exploring effective control methods, especially environmental friendly approaches. Entomopathogenic nematodes (EPNs) are a group of biological control agents that actively search for the host, including those in a cryptic habitat like the carob moth larvae within infested fruits. Here, we assumed that treatment of the infested and dropped fruits with EPNs may provide new insight into the management of the carob moth. Three species of EPNs, Steinernema feltiae, S
ZAHRA MEMARI,
JAVAD KARIMI,
SHOKOOFEH KAMALI,
SEYED HOSSEIN GOLDANSAZ,
MOJTABA HOSSEINI
Journal of Nematology, Volume 48 , ISSUE 4, 261–267
research-article | 30-November-2020
ratio.
Free-living nematodes (FLN) also hold an integral position in decomposition (Neher, 2010; Yadav et al., 2018). These nematodes closely interact with soil microbes and contribute either directly or indirectly to N mineralization through accelerated turnover of microbial cells, modification of the microbial community, and addition of new substrates, thereby increasing the availability of N (Mekonen et al., 2017; Sultana and Bohra, 2012; Yadav et al., 2018). In the soil food web, the
Samuel Maina,
Hannah Karuri,
Rossa Nyoike Ng’endo
Journal of Nematology, Volume 53 , 1–12
Research Article | 17-October-2018
Conservation agriculture (CA) based on the principles of minimum soil disturbance, crop residue retention, and crop rotation has been the focus of intensive research in recent years. A study was carried out to determine the effects of tillage and fertilizer on the population densities of plant-parasitic nematodes in maize. Three tillage regimes, (i) basin planting, (ii) rip line seeding, and (iii) conventional tillage, were combined with four fertilizer regimes: (i) no-fertilizer, (ii) low
N. Mashavakure,
A. B. Mashingaidze,
R. Musundire,
E. Gandiwa,
V. K. Muposhi,
C. Thierfelder,
N. Nhamo,
T. Bere,
S. S. Akhtar
Journal of Nematology, Volume 50 , ISSUE 3, 329–342
research-article | 30-November-2020
Needle nematodes are polyphagous root ectoparasites of a wide range of economically important plants by directly feeding on root cells. Some species of this genus are economically important pests of agricultural plants, and others are proved to transmit nepoviruses (Taylor and Brown, 1997). The genus Longidorus consists of more than 160 valid species (Archidona-Yuste et al., 2016; Cai et al., 2020), but currently only 12 have been reported from Greece. Seven of these have been molecularly
Emmanuel A. Tzortzakakis,
Ilenia Clavero-Camacho,
Carolina Cantalapiedra-Navarrete,
Parthenopi Ralli,
Juan E. Palomares-Rius,
Pablo Castillo,
Antonio Archidona-Yuste
Journal of Nematology, Volume 53 , 1–10
research-article | 30-November-2020
are warranted, such as biological control using entomopathogenic nematodes (EPN).
EPN in the genera Heterorhabditis and Steinernema are important biological control agents that are utilized to manage a variety of devasting insect pests (Shapiro-Ilan et al., 2002; Grewal et al., 2005; Shapiro-Ilan et al., 2020). These nematodes are lethal parasites and kill insect pests with the assistance of mutualistic bacteria (Kaya and Gaugler, 1993). The infective juveniles (IJs), the only free-living stage
Yinping Li,
George N. Mbata,
David I. Shapiro-Ilan
Journal of Nematology, Volume 53 , 1–8
Article | 21-July-2017
Florida accounts for more than 75% of the national cut foliage production. Unfortunately, root-knot nematodes (RKN) (Meloidogyne spp.) are a serious problem on these crops, rendering many farms unproductive. Currently, information on the Meloidogyne spp. occurring on most commonly cultivated cut foliage crops in Florida, and tools for their rapid identification are lacking. The objectives of this study were to (i) identify specific RKN infecting common ornamental cut foliage crops in Florida
RICHARD BAIDOO,
SOUMI JOSEPH,
TESFAMARIAM M. MENGISTU,
JANETE A. BRITO,
ROBERT MCSORLEY,
ROBERT H. STAMPS,
WILLIAM T. CROW
Journal of Nematology, Volume 48 , ISSUE 3, 193–202
research-article | 30-November-2018
D. magna genotypes were raised under low-food conditions, their offspring showed varying levels of resistance to parasites.
Pasteuria penetrans is an obligate bacterial pathogen of root-knot nematodes, Meloidogyne spp. The infection process of P. penetrans has multiple steps during which the nematode could resist infection. The first step is attachment of endospores to the cuticle of the second-stage juvenile (J2). Individuals within a root-knot nematode population have been shown to vary in
Chang Liu,
Pingsheng Ji,
Patricia Timper
Journal of Nematology, Volume 51 , 1–8
research-article | 30-November-2020
Plant parasitic nematodes (PPNs) are problematic soil dwelling pests. They attack and cause severe mechanical and physiological damage to plant roots as ecto- and endo-parasites as they feed on the sap and tissues with their stylet mouthparts. Subsequent effects include negative impact on plant growth and yield and may lead to plant death due to the PPNs (Atkinson et al., 2012; Forghani and Hajihassani, 2020; McCarter, 2009). PPNs feeding activity may also lead to secondary infections by other
Mustapha Touray,
Harun Cimen,
Sebnem H. Gulsen,
Derya Ulug,
Dolunay Erdogus,
David Shapiro-Ilan,
Selcuk Hazir
Journal of Nematology, Volume 53 , 1–17
research-article | 30-November-2020
profitable potato production. Among the major potato diseases, the potato early dying (PED) complex results in premature plant senescence and can decrease potato marketable yield by as much as 50% (Row and Powelson, 2002). The root-lesion nematode Pratylenchus penetrans is a known contributor to PED, along with the fungal wilt pathogen Verticillium dahliae and to a lesser extent V. albo-atrum. The possible role of other plant-parasitic nematodes in PED development is unknown, although several studies
Maria Munawar,
Dmytro P. Yevtushenko,
Pablo Castillo
Journal of Nematology, Volume 53 , 1–17
research-article | 23-April-2020
), there are relatively few reports on the plant-parasitic nematode species associated with this crop. The hop cyst nematode (Heterodera humuli Filipjev) is the most well studied nematode associated with hop worldwide (De Grisse and Gillard, 1963), and has been reported in United States hop production in Pierce County, Washington (Cobb, 1962). Other plant-parasitic nematodes associated with hop in the United States include Meloidogyne hapla Chitwood and Xiphinema americanum Cobb, which were found
Tristan T. Watson,
Marco Suarez,
Zhanao Deng,
Johan A. Desaeger
Journal of Nematology, Volume 52 , 1–10
research-article | 03-June-2019
Caenorhabditis spp., for instance, the rDNA copy number was estimated to be as many as 56 to 323 copies within their genomes (Bik et al., 2013). Second, the rDNA polymorphisms among the repeat units are very low within the genome due to concerted evolution (Liao, 1999). These two features make rDNA particularly well suited for taxonomic identification, phylogenetic analysis, and barcoding for nematodes (Blaxter et al., 1998; Floyd et al., 2002; Holterman et al., 2006; Megen et al., 2009; Rodrigues Da Silva
L. K. Carta,
S. Li
Journal of Nematology, Volume 51 , 1–8
Research Article | 17-October-2018
We investigated Solanum nigrum (seeds) and Datura stramonium (shoots) against root-knot nematodes in terms of J2 paralysis and egg hatch inhibition (methanol extract), as well as inhibition of nematode development in host roots (soil amending with either S. nigrum seeds’ or D. stramonium shoots’ meal). Datura stramonium was found equally effective at inhibiting motility of Meloidogyne incognita and Meloidogyne javanica (both EC50 = 427 μg mL−1 at 3 day), but inhibition occurred more quickly for
Chrisostomos Oplos,
Kodjo Eloh,
Urania-Menkissoglu Spiroudi,
Caboni Pierluigi,
Nikoletta Ntalli
Journal of Nematology, Volume 50 , ISSUE 3, 317–328
Research Article | 26-September-2018
, cryopreservation, behavioral assays, and genomic tools. Throughout, we present avenues of research that are interesting and feasible to address with caenorhabditid nematodes and their natural parasites, ranging from the maintenance of outcrossing to the community dynamics of host-associated microbes. In combining natural relevance with the experimental power of a laboratory supermodel, these fledgling host–parasite systems can take on fundamental questions in evolutionary ecology of disease.
AMANDA K. GIBSON,
LEVI T. MORRAN
Journal of Nematology, Volume 49 , ISSUE 4, 357–372
research-article | 30-November-2020
Potato cyst nematodes (PCNs) are soil-borne plant pests which have great economic importance to potato production that are internationally recognized quarantine pests (EPPO, 2004). In Morocco, they are regulated by sanitary rules for imported plants or plant products (Decree of the Minister of Agriculture and Agrarian Reform of Morocco, 1986).
The plant parasitic nematode Globodera pallida (Stone, 1973) Behrens is the greatest threat to potato crops and other Solanaceous hosts (Sullivan, 2007
A. Hajjaji,
R. Ait Mhand,
N. Rhallabi,
F. Mellouki
Journal of Nematology, Volume 53 , 1–8
Article | 21-July-2017
experiment was conducted twice. Foliar applications of fluensulfone reduced plant vigor and dry weight of eggplant and tomato, but not cucumber or squash; application of oxamyl had no effect on the vigor or weight of any of the crops. Typically, only the highest rate of fluensulfone was phytotoxic to eggplant and tomato. Tomato was the only crop tested in which there was a reduction in the number of nematodes or galls when fluensulfone or oxamyl was applied to the foliage compared to the nontreated
KELLY A. MORRIS,
DAVID B. LANGSTON,
RICHARD F. DAVIS,
JAMES P. NOE,
DON W. DICKSON,
PATRICIA TIMPER
Journal of Nematology, Volume 48 , ISSUE 2, 65–71
research-article | 30-November-2020
Entomopathogenic nematodes of the families Steinernematidae Travassos, 1927 and Heterorhabditidae Poinar, 1976 are obligate lethal pathogens of insects with a worldwide distribution (Adams et al., 2007; Hominicki, 2002; Spiridonov and Subbotin, 2016). These organisms are commercially produced and used as biological control of insect pest populations (Shapiro-Ilan et al., 2002).
The family Steinernematidae is divided into seven clades: affine-intermedium, bicornutum, cameroonense, carpocapsae
Magdalena Lis,
Ewa Sajnaga,
Marcin Skowronek,
Adrian Wiater,
Kamila Rachwał,
Waldemar Kazimierczak
Journal of Nematology, Volume 53 , 1–24
research-article | 30-November-2020
Entomopathogenic nematodes (EPNs) are obligate parasites of insect hosts and cause host mortality within 24–48 hr after infection (Griffin et al., 2005). To date, around 100 valid species of Steinernema and 21 species of Heterorhabditis have been identified from different countries of the world (Bhat and Askary, 2020). EPNs are promising candidates for biocontrol of insects due to their ability to search for hosts, safety to non-target organisms and the environment, high reproductive potential
Bingjiao Sun,
Xiuqing Zhang,
Li Song,
Lixin Zheng,
Xianqin Wei,
Xinghui Gu,
Yonghe Cui,
Bin Hu,
Toyoshi Yoshiga,
Mahfouz M. Abd-Elgawad,
Weibin Ruan
Journal of Nematology, Volume 53 , 1–17
research-article | 30-November-2018
-parasitic nematodes (RPN) that substantially affect rice production in SE Asia (De Waele and Elsen, 2007). The rice root-knot nematode, Meloidogyne graminicola (Golden and Birchfield, 1965), is the principal Meloidogyne species found on rice in Asia causing rice yield losses ranging between 16 and 80% of the total crop production (Plowright and Bridge, 1990; Prot and Matias, 1995; Soriano et al., 2000; Padgham et al., 2004; Mantelin et al., 2017), depending on the rice agroecosystems and agricultural
Malyna Suong,
Elodie Chapuis,
Vira Leng,
Florent Tivet,
Dirk De Waele,
Huế Nguyễn Thị,
Stéphane Bellafiore
Journal of Nematology, Volume 51 , 1–15
Original Research | 18-July-2017
Abstract
The root-knot nematodes (RKN), Meloidogyne spp., represent an important threat to yam (Dioscorea spp.) production in West Africa. With the aim to establish the diversity of RKN species affecting yam tubers, for control and resistance screening purposes, surveys were conducted in the main yam producing areas of Nigeria. Galled tubers (N = 48) were collected from farmers’ stores and markets in nine states in Nigeria and in one district in Ghana. RKN isolated from yam tubers were
Yao A. Kolombia,
Gerrit Karssen,
Nicole Viaene,
P. Lava Kumar,
Nancy de Sutter,
Lisa Joos,
Danny L. Coyne,
Wim Bert
Journal of Nematology, Volume 49 , ISSUE 2, 177–188
Research Article | 17-October-2018
Citrullus amarus (CA) (previously known as Citrullus lanatus var. citroides) accessions collected in southern Africa are known to have resistance to root-knot nematodes (RKN) and are suitable rootstocks for grafted watermelon. The objective of this study was to conduct a comparative metabolomics analysis and identify unique metabolites in roots of CA accessions versus roots of watermelon cultivars (Citrullus lanatus (Thunb.) Matsum. and Nakai var. lanatus; CL). Nuclear magnetic resonance (NMR
Mihail Kantor,
Amnon Levi,
Judith Thies,
Nihat Guner,
Camelia Kantor,
Stuart Parnham,
Arezue Boroujerdi
Journal of Nematology, Volume 50 , ISSUE 3, 303–316
Research Article | 03-December-2018
the egg and the J2 was at the hatching stage. Sex of juvenile stages can be identified using the morphology and size of the genital primordia and a body size of nematodes. Sex of juveniles may be identified from the J3 stage by the presence of the cloacal primordium in male juvenile and orientation of the germinal zone of the genital primordium. A tabular key to developmental stages of B. crenati is given. The body grows during molts and within each stage. The body increases rapidly after J3 stage
Alexander Y. Ryss,
Kristina S. Polyanina
Journal of Nematology, Volume 50 , ISSUE 4, 459–472
research-article | 30-November-2020
Entomopathogenic nematodes (EPNs) in the genera Steinernema and Heterorhabditis are excellent biocontrol agents against many arthropod species (Campos-Herrera, 2015; Lacey et al., 2015). They are naturally distributed in the soil in the form of infective juvenile (IJ), which has to survive while searching for a host (Kaya et al., 2006). Once the victim is located, the IJs penetrate and release the mutualistic bacteria of the genera Xenorhabdus for steinernematids and Photorhabdus for
Raquel Campos-Herrera,
Ignacio Vicente-Díez,
Magda Galeano,
Maryam Chelkha,
María del Mar González-Trujillo,
Miguel Puelles,
David Labarga,
Alicia Pou,
Javier Calvo,
José Eduardo Belda
Journal of Nematology, Volume 53 , 1–14
research-article | 30-November-2018
Root lesion nematodes (Pratylenchus spp.) are one of three economically important plant-parasitic nematode pests of many crops worldwide (Jones et al., 2013). The over 77 species currently described are polyphagous and cause yield losses of major grain crops including wheat and barley and even more significant damage under drought conditions (Taylor et al., 1999; Castillo and Vovlas, 2007). In Australia, about 12 economically important Pratylenchus species have been described and these include
Farhana Begum,
John Fosu-Nyarko,
Shashi Sharma,
Bill Macleod,
Sarah Collins,
Michael G. K. Jones
Journal of Nematology, Volume 51 , 1–15
Article | 21-July-2017
Steam and soil solarization were investigated for control of the root-knot nematode Meloidogyne arenaria in 2 yr of field trials on a commercial flower farm in Florida. The objective was to determine if preplant steam treatments in combination with solarization, or solarization alone effectively controlled nematodes compared to methyl bromide (MeBr). Trials were conducted in a field with naturally occurring populations of M. arenaria. Treatments were solarization alone, steam treatment after
NANCY KOKALIS-BURELLE,
ERIN N. ROSSKOPF,
DAVID M. BUTLER,
STEVEN A. FENNIMORE,
JOHN HOLZINGER
Journal of Nematology, Volume 48 , ISSUE 3, 183–192
Report | 21-July-2017
Spiral nematodes (Helicotylenchus spp.) are common plant-parasitic nematodes in fields of many crops. In June 2015, two soil samples were collected from a soybean field in Richland County, ND. Nematodes were extracted from soil using the sugar centrifugal flotation method ( Jenkins, 1964). Plant-parasitic nematodes were identified to genus based on morphological features and counted. Both samples contained spiral nematodes from 1,500 to 3,300 per kilogram of soil. In June and August
GUIPING YAN,
ADDISON PLAISANCE,
DANQIONG HUANG,
ZAFAR A. HANDOO
Journal of Nematology, Volume 49 , ISSUE 1, 1–1
Research Article | 17-October-2018
Thomas Powers,
Timothy Harris,
Rebecca Higgins,
Peter Mullin,
Kirsten Powers
Journal of Nematology, Volume 50 , ISSUE 3, 399–412
Research Article | 31-May-2018
Three populations of neotylenchid nematodes were isolated in Ningbo, P. R. China, from white pine lumber (Pinus monticola) imported from the USA. The nematodes were morphologically intermediate between Hexatylus and Deladenus. The nematodes were molecularly characterized based on sequences of the rDNA small subunit 18S, large subunit 28S D2/D3, and internal transcribed spacer sequences. The phylogenetic inferences placed the nematodes with other neotylenchid nematodes, i.e., Fergusobia and
Qing Yu,
Maria Munawar,
Jianfeng Gu,
Weimin Ye
Journal of Nematology, Volume 50 , ISSUE 1, 69–76
research-article | 30-November-2019
Indian lotus (Nelumbo nucifera Gaertn), cultivated in Japan since ancient times, includes both the flowering lotus, with high ornamental value, and the edible lotus, the rhizomes of which are consumed as a vegetable (Minamikawa and Tanaka, 1959). Mihira and Nagai (1996) reported that nematodes cause blackish-brown blotches on the surface of edible lotus rhizomes. These blotches were determined to be the symptoms of browning rhizome of Indian lotus (also known as “browning tuber of Indian lotus
Shigeru Uematsu,
Tetsuo Yabu,
Mitsuyoshi Yao,
Takayuki Kurihara,
Hironori Koga
Journal of Nematology, Volume 52 , 1–9
research-article | 30-November-2020
in plant development (Pietrowski et al., 2010; Takahashi and Gonçalo, 2005).
Even in other cultures, the management of these insects is considered unsatisfactory, due to their underground their habits, which impedes control by most natural enemies and agricultural pesticides (Alves and Moino, 2009; Guide et al., 2016; Souza and Ribeiro, 2003).
However, underground scale insects that attack roots can be easy targets for entomopathogenic nematodes (EPNs) (Rhabditida: Heterorhabditidae and
Marcelo Zart,
Mariana Ferracim de Macedo,
Jael Simões Santos Rando,
Gabriela Souza Doneze,
Cassia Pereira Brito,
Rodrigo de Souza Poletto,
Viviane Sandra Alves
Journal of Nematology, Volume 53 , 1–10
Article | 21-July-2017
;cultivars, Kentucky 31 (common toxic) and Texoma MaxQ II (novel endophyte) and the Mediterranean cultivar Flecha MaxQ (novel endophyte). Endophyte-free plants of each cultivar were controls. Each cultivar 3 endophyte combination was randomly assigned to a control, low or high inoculation rate of a mixed nematode culture containing stunt nematodes (Tylenchorhynchus spp.), ring nematodes (Criconemella spp.), spiral nematodes (Helicotylenchus spp.), and lesion nematodes (Pratylenchus spp
JAMES K. ROGERS,
NATHAN R. WALKER,
CAROLYN A. YOUNG
Journal of Nematology, Volume 48 , ISSUE 2, 87–94
research-article | 17-March-2020
die eventually and this loss would devastate the beech-maple forest ecosystems of the eastern USA. The etiology was not understood (Ewing et al., 2019) until recently when a nematode was demonstrated to be necessary for experimental symptom production (Carta et al., 2020). As the disease spreads, accurate identification of nematodes in new symptomatic trees is more important than ever to delimit and potentially contain the spread of the disease and to identify the nematode in surveys outside the
L.K. Carta,
S. Li
Journal of Nematology, Volume 52 , 1–15
research-article | 30-November-2019
Root-knot nematodes (RKN; Meloidogyne spp.) are a worldwide problem in the cultivation of both fruit and vegetable crops (Jones et al., 2013). There are approximately 100 different species of Meloidogyne (with new species being described often) (Jones et al., 2013) and specific species or “races” usually parasitize only a select range of host plants (Moens et al., 2009). The life cycle of RKN lasts approximately 30 days, depending on species and environmental conditions (Ploeg and Maris, 1999
J. R. De Long,
M. A. Streminska,
A. Persijn,
H. M. I. Huisman,
C. van der Salm
Journal of Nematology, Volume 52 , 1–12
research-article | 30-November-2020
-parasitic nematodes, among which the root-knot nematodes (Meloidogyne spp. Göldi). This phytoparasite genus has the greatest impact on crops in the world, in addition to being the genus most frequently found in parasitic weed roots (Bellé et al., 2019; Ferraz et al., 1978; Moens and Perry, 2009). In Brazil, an increasing number of studies have been developed that report weeds, present in agricultural areas, as natural hosts of several species of nematodes of the genus Meloidogyne (Bellé et al., 2016
Tiago Edu Kaspary,
Ismail Teodoro de Souza Júnior,
Rodrigo Ferraz Ramos,
Cristiano Bellé
Journal of Nematology, Volume 53 , 1–6
research-article | 30-November-2018
microscope, and light microscopic images of fixed nematodes were taken on a Leica WILD MPS48 Leitz DMRB compound microscope. Measurements were made with an ocular micrometer on a Leica WILD MPS48 Leitz DMRB compound microscope. All measurements are in micrometers, unless otherwise stated.
Living nematode juveniles (J2) recovered from the cysts were examined morphologically and molecularly for species identification at the MNGDBL. Observations of morphological characters critical for identification (Fig
Andrea M. Skantar,
Zafar A. Handoo,
Mihail R. Kantor,
Maria N. Hult,
Saad. A. Hafez
Journal of Nematology, Volume 51 , 1–6
research-article | 17-September-2019
as susceptible to M. javanica (Ansari et al., 2019). To the best of our knowledge, this is the first report of M. ethiopica and M. javanica parasitizing Rumex spp. roots in Brazil. This finding has a great importance, since to predict one host potential of nematodes in agricultural areas (Fig. 1).
Appendix
L. A. Yánez Márquez,
M. Divers,
W. R. Silva,
J. V. de Araújo Filho,
C. B. Gomes
journal of nematology, Volume 51 , 1–2
research-article | 17-March-2020
solution. Photomicrographs of cyst vulval cones, females, and J2 were made with an automatic 35-mm camera attached to a compound microscope having an interference contrast system. Roots and whole cysts were photographed under a dissecting microscope, and light microscopic images of fixed nematodes were taken on a Nikon Eclipse Ni compound microscope using a Nikon DS-Ri2 camera. Measurements were made with an ocular micrometer on a Leica WILD MPS48 Leitz DMRB compound microscope. All measurements are in
Zafar A. Handoo,
Andrea M. Skantar,
Saad L. Hafez,
Mihail R. Kantor,
Maria N. Hult,
Stephen A. Rogers
Journal of Nematology, Volume 52 , 1–4
research-article | 30-November-2020
Research on entomopathogenic nematodes (EPN) in Egypt started in the 1970s, and focused heavily on imported, non-indigenous species (Abd-Elgawad, 2017). Surveys to isolate and identify indigenous EPNs began two decades later (Shamseldean and Abd-Elgawad, 1994). Inconsistent efficacy by expensive EPN products hinders their use by the Egyptian farmers, suggesting a need for further exploration to identify species which are adapted to North African conditions and best suited to infect local insect
Alexandros Dritsoulas,
Fahiem E. El-Borai,
Ibrahim E. Shehata,
Mostafa M. Hammam,
Ramadan M. El-Ashry,
Moawad M. Mohamed,
Mahfouz M. Abd-Elgawad,
Larry W. Duncan
Journal of Nematology, Volume 53 , 1–13
research-article | 30-November-2019
Ebrahim Shokoohi,
Phatu W. Mashela
Journal of Nematology, Volume 52 , 1–5
research-article | 17-March-2020
Root-knot nematode disease has dramatically impacted Morus alba L. production in Japan, India, and Brazil (Hida and Zhu, 1985; Sujathamma et al., 2014; Paestakahashi et al., 2015). According to Wang and Chen (1989a, 1989b), root-knot nematodes cause mulberry leaf loss of 20 to 45%, with severe cases reaching over 75% in some fields (Wang and Chen, 1989a, 1989b). Leaf quality can also be negatively impacted by this pathogen. Root-knot nematodes on mulberry in Japan have previously been
Pan Zhang,
Hudie Shao,
Chunping You,
Yan Feng,
Zhenwen Xie
Journal of Nematology, Volume 52 , 1–8
Research Article | 03-September-2018
Stauratostoma shelleyi n. gen., n. sp. is described from the midgut and hindgut of nine species of the millipede family Xystodesmidae collected in the southern Appalachian regions of North Carolina, Tennessee and Alabama. Specimens of S. shelleyi were morphologically examined with differential interference contrast, phase contrast, and scanning electron microscopy. The head of S. shelleyi differs from other thelastomatid nematodes in having a head region mushroom-shaped in profile; cruciform
Gary Phillips,
Robert J. Pivar,
Xiocaun Sun,
John K. Moulton,
Ernest C. Bernard
Journal of Nematology, Volume 50 , ISSUE 2, 133–146
research-article | 30-November-2021
Southern root-knot nematode (Meloidogyne incognita (Kofoid & White) Chitwood), reniform nematode (Rotylenchulus reniformis Linford & Oliveira), and lesion nematode (Pratylenchus penetrans (Cobb) Filipjev & Shuurmans Stekhoven) are common plant-parasitic nematodes that infect soybean (Glycine max (L.) Merr.) and other crops, causing yield losses (Noel et al., 2015; Bradley et al., 2021). These nematodes occur in diverse soybean growing regions (Karssen et al., 2013; Noel et al., 2015). Yield
Jaeyeong Han,
Steven P. Locke,
Theresa K. Herman,
Nathan E. Schroeder,
Glen L. Hartman
Journal of Nematology, Volume 54 , 1–13
Article | 21-July-2017
sawyer beetles (Coleoptera:Cerambycidae). Esteya vermicola treatments significantly increased the survival rate of pine seedlings that were infected by pinewood nematodes.Wounded plants sprayed with 107 CFU/ml E. vermicola had a 73.0% greater survival rate than nonwounded pine seedlings treated similarly. The treatment of pine seedlings with 107 CFU/ml E. vermicola 14 d before nematode infection increased their survival rate by 90.0%. The number of pinewood nematodes isolated from dead
ZHEN WANG,
YONGAN ZHANG,
CHUNYAN WANG,
YUNBO WANG,
CHUNGKEUN SUNG
Journal of Nematology, Volume 49 , ISSUE 1, 86–91
research-article | 30-November-2018
nematodes are a major problem in this warm area with coastal sandy soils (Weingartner et al., 1993; Crow et al., 2000a). A wide variety of plant-parasitic nematodes are abundant in the area, but sting nematode (Belonolaimus longicaudatus) and the stubby-root nematodes, Paratrichodorus (Nanidorus) spp. and Trichodorus spp., are the most problematic (Perez et al., 2000; Crow et al., 2000b). Sting nematode is a very damaging pathogen of potato that stunts the root system, reducing tuber yield (Weingartner
Zane J. Grabau,
Joseph W. Noling,
Pablo A. Navia Gine
Journal of Nematology, Volume 51 , 1–12
research-article | 30-November-2020
anthropogenic origins (Kharytonov et al., 2019; Pidlisnyuk et al., 2020). Stefanovska et al. (2017) found several herbivorous insects associated with the cultivation of M × g being grown in the plantation as a source of bioenergy. Plant-parasitic nematodes may also affect M × g yields (Mekete et al., 2009, 2011). Different agronomic practices affect M × g yield and nematode communities, the latest can be used as a bioindication of the phytoremediation process (Almasary et al., 2020). Earlier, a soil survey
Tatyana Stefanovska,
Andrzej Skwiercz,
Łukasz Flis,
Valentina Pidlisnyuk,
Miloslav Zouhar
Journal of Nematology, Volume 53 , 1–7