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research-article | 30-November-2020

First report of root-knot nematode, Meloidogyne incognita on calendula in Turkey

officinalis L. (Asteraceae) has been planted as a traditional medicinal plant and is medicinally used in the world (Muley et al., 2009). Its extracts possess a wide range of pharmacological effects (Pintea et al., 2003). However, ornamental and medicinal plants can be attacked by several soil borne pathogens. Russo et al. (2008) pointed out that C. officinalis was infested with Meloidogyne incognita (Kofoid and White, 1919), Chitwood, 1949 in Italy. In another study, Brito et al. (2010) reported root-knot

Hürkan Ataş, Gülsüm Uysal, Çiğdem Gözel, Tevfik Özalp, Uğur Gözel, Zübeyir Devran

Journal of Nematology, Volume 53 , 1–5

research-article | 14-June-2021

First report of Meloidogyne incognita infecting Cannabis sativa in Alabama

screened in the greenhouse have varying degrees of susceptibility towards M. incognita (Coburn and Desaeger, 2020) and a few are resistant (Hansen et al., 2020). Meloidogyne incognita is commonly found in Alabama and has been reported in 46 out of Alabama’s 67 counties. Potential growers of industrial hemp should consider nematode management when developing their pest management plan. To our knowledge, this is the first report of M. incognita infecting Cannabis sativa in Alabama.

Bisho R. Lawaju, William Groover, Jessica Kelton, Kassie Conner, Edward Sikora, Kathy S. Lawrence

Journal of Nematology, Volume 53 , 1–3

Article | 21-July-2017

Reproduction of Meloidogyne incognita Race 3 on Flue-cured Tobacco Homozygous for Rk1 and/or Rk2 Resistance Genes

Most commercial tobacco cultivars possess the Rk1 resistance gene to races 1 and 3 of Meloidogyne incognita and race 1 of Meloidogyne arenaria, which has caused a shift in population prevalence in Virginia tobacco fields toward other species and races. A number of cultivars now also possess the Rk2 gene for root-knot resistance. Experiments were conducted in 2013 to 2014 to examine whether possessing both Rk1 and Rk2 increases resistance to a variant of M. incognita race 3 compared to


Journal of Nematology, Volume 48 , ISSUE 2, 79–86

Article | 05-December-2017

Vertical Distribution of Pasteuria penetrans Parasitizing Meloidogyne incognita on Pittosporum tobira in Florida

Pasteuria penetrans is considered as the primary agent responsible for soil suppressiveness to root-knot nematodes widely distributed in many agricultural fields. A preliminary survey on a Pittosporum tobira field where the grower had experienced a continuous decline in productivity caused by Meloidogyne incognita showed that the nematode was infected with Pasteuria penetrans. For effective control of the nematode, the bacterium and the host must coexist in the same root zone. The vertical


Journal of Nematology, Volume 49 , ISSUE 3, 311–315

research-article | 30-November-2020

Meloidogyne incognita management by nematicides in tomato production

The production of tomato (Solanum lycopersicum) is a very important industry in the United States with 10 billion kg tomatoes worth $1.6 billion United States dollars (USD) produced in 2019 (USDA-NASS, 2020). Florida produces 54% of fresh market tomatoes, an industry that produced 646 million kg worth $705 million (USD) nationwide in 2019 (USDA-NASS, 2020). Meloidogyne incognita (southern root-knot nematode, SRKN) is a major pest in tomato production, and there are relatively few management

Zane J. Grabau, Chang Liu, Rebeca Sandoval-Ruiz

Journal of Nematology, Volume 53 , 1–12

research-article | 30-November-2019

The relationship between commercial cotton cultivars with varying Meloidogyne incognita resistance genes and yield

The southern root-knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is widely distributed across the southern USA. In the Southern High Plains of Texas, M. incognita infested 40 to 50% of the cotton fields (Starr et al., 1993; Wheeler et al., 2000). In the absence of nematode management tactics, it is estimated that M. incognita reduces yield in the west Texas area by an average of 26% (Orr and Robinson, 1984). Management options for this nematode include crop rotation

Terry A. Wheeler, Kerry Siders, Cecilia Monclova-Santana, Jane K. Dever

Journal of Nematology, Volume 52 , 1–8

Research Article | 03-September-2018

Activity of Vetiver Extracts and Essential Oil against Meloidogyne incognita

Vetiver, a nonhost grass for certain nematodes, was studied for the production of compounds active against the southern root-knot nematode, Meloidogyne incognita. In laboratory assays studying the effects on second-stage juvenile (J2) activity and viability, crude vetiver root and shoot extracts were nematotoxic, resulting in 40% to 70% J2 mortality, and were also repellent to J2. Vetiver oil did not exhibit activity against J2 in these assays. Gas chromatography-mass spectrometry analyses of

Kansiree Jindapunnapat, Nathan D. Reetz, Margaret H. MacDonald, Ganga Bhagavathy, Buncha Chinnasri, Noppamas Soonthornchareonnon, Anongnuch Sasnarukkit, Kamlesh R. Chauhan, David J. Chitwood, Susan L.F. Meyer

Journal of Nematology, Volume 50 , ISSUE 2, 147–162

research-article | 30-November-2021

Evaluation of perennial Glycine species for response to Meloidogyne incognita, Rotylenchulus reniformis, and Pratylenchus penetrans

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

research-article | 30-November-2019

The effect of two QTLs for resistance to Meloidogyne incognita in cotton on nematode egression from roots

. Figure 1: Numbers of Meloidogyne incognita remaining inside roots, egressed from roots into the vermiculite, and total counts on four cotton isolines that differ in M. incognita-resistance genes in three experimental trials. DAI = days after inoculation. Different letters over bars within a sampling date indicate significant differences at α = 0.05. Bars with no letters showed no significant difference within a sampling date. The number of nematodes that egressed from roots expressed as a

Mychele B. da Silva, Richard F. Davis, Robert L. Nichols, Pawan Kumar, Peng W. Chee

Journal of Nematology, Volume 52 , 1–8

research-article | 30-November-2019

Festulolium and fungal endophyte associations: host status for Meloidogyne incognita and nematotoxic plant extracts

nematode Meloidogyne incognita (Kofoid and White) Chitwood (Jia et al., 2013). Similarly, host status of tall fescue ‘Jesup’ to M. incognita did not depend on fungal colonization; the cultivar was a nonhost regardless of endophyte status (Nyczepir and Meyer, 2010). As indicated by the examples given above, interactions among grasses, endophytes, and nematodes are complex. The current study was conducted to investigate host status of five Festulolium lines, each with and without its own strain of loline

Susan L. F. Meyer, Brian J. Patchett, Timothy J. Gillanders, Mihail R. Kantor, Patricia Timper, Margaret H. MacDonald

Journal of Nematology, Volume 52 , 1–16

Research Article | 03-December-2018

Effects of vermicompost water extract prepared from bamboo and kudzu against Meloidogyne incognita and Rotylenchulus reniformis

A series of experiments in laboratory, greenhouse, and field were conducted to compare the nematode suppressive effect of vermicompost tea (VCT) prepared from vermicompost with moso-bamboo (Phyllostachys edulis (Carrière) J. Houz.) and kudzu (Pueraria lobata (Willd) Ohwi) as feed stock (weed VCT) to that prepared from vegetable food waste (vegetable VCT) against Meloidogyne incognita and Rotylenchulus reniformis. Two laboratory trials were conducted by incubating eggs of M. incognita and R

Xiaodong You, Motoaki Tojo, Shelby Ching, Koon-Hui Wang

Journal of Nematology, Volume 50 , ISSUE 4, 569–578

Article | 24-July-2017

Management of Root-knot Nematode (Meloidogyne incognita) onPittosporum tobira Under Greenhouse, Field, and On-farm Conditions in Florida

(=Paecilomyces lilacinus) strain 251. Treatment applications were made during the spring and fall seasons according to manufacturer’s specifications. Efficacy was evaluated based on J2/100 cm3 of soil, J2/g of root, and crop yield (kg/plot). Unlike spirotetramat, which did not demonstrate any measurable effects on Meloidogyne incognita J2 in the soil, furfural and P. lilacinum were marginally effective in reducing the population density of M. incognita on Pittosporum tobira. However, nematode reduction did


Journal of Nematology, Volume 49 , ISSUE 2, 133–139

research-article | 30-November-2020

Endophytic Beauveria bassiana increases galling of ‘Rutgers’ tomato roots with Meloidogyne incognita

entry wounds for secondary pathogens (Shalini et al., 2014). Of all identified nematodes, only 15% cause significant economic crop losses (Bernard et al., 2017; Koenning et al., 1999). Genera of highest economic importance in the U.S. include Meloidogyne, Heterodera, Pratylenchus, Hoplolaimus, Xiphinema, and Rotylenchulus (Bernard et al., 2017; Koenning et al., 1999). Meloidogyne incognita, the southern root-knot nematode (RKN), is the most devastating threat to agricultural crop production

Shalini Yerukala, Ernest C. Bernard, Kimberly D. Gwinn, David M. Butler, Parwinder S. Grewal, Bonnie H. Ownley

Journal of Nematology, Volume 53 , 1–16

research-article | 30-November-2020

Enhanced biological control of root-knot nematode, Meloidogyne incognita, by combined inoculation of cotton or soybean seeds with a plant growth-promoting rhizobacterium and pectin-rich orange peel

Cotton (Gossypium hirsutum L.) and soybean (Glycine max L.) are economically important crops in the United States and worldwide. In the U.S. alone, cotton yield in 2018 was 18.4 million bales, and soybean yield was 4.54 billion bushels (Anonymous, 2018). Meloidogyne incognita (Kofoid and White) Chitwood, the southern root-knot nematode, is broadly distributed in soils cultivated with cotton (Xiang et al., 2017b) and other crops (Huang et al., 2016), and causes economically significant yield

Mohammad K. Hassan, Kathy S. Lawrence, Edward J. Sikora, Mark R. Liles, Joseph W. Kloepper

Journal of Nematology, Volume 53 , 1–17

Article | 21-July-2017

Assessment of DAPG-producing Pseudomonas fluorescens for Management of Meloidogyne incognita and Fusarium oxysporum on Watermelon

Pseudomonas fluorescens isolates Clinto 1R, Wayne 1R, and Wood 1R, which produce the antibiotic 2,4-diacetylphloroglucinol (DAPG), can suppress soilborne diseases and promote plant growth. Consequently, these beneficial bacterial isolates were tested on watermelon plants for suppression of Meloidogyne incognita (root-knot nematode: RKN) and Fusarium oxysporum f. sp. niveum (Fon). In a greenhouse trial,Wayne 1R root dip suppressed numbers of RKN eggs per gram root on ‘Charleston Gray’ watermelon


Journal of Nematology, Volume 48 , ISSUE 1, 43–53

Article | 21-July-2017

Resistance to Southern Root-knot Nematode (Meloidogyne incognita) in Wild Watermelon (Citrullus lanatus var. citroides)

Southern root-knot nematode (RKN, Meloidogyne incognita) is a serious pest of cultivated watermelon (Citrullus lanatus var. lanatus) in southern regions of the United States and no resistance is known to exist in commercial watermelon cultivars. Wild watermelon relatives (Citrullus lanatus var. citroides) have been shown in greenhouse studies to possess varying degrees of resistance to RKN species. Experiments were conducted over 2 yr to assess resistance of southern RKN in C. lanatus var


Journal of Nematology, Volume 48 , ISSUE 1, 14–19

research-article | 17-April-2019

Effect of spirotetramat and fluensulfone on population densities of Mesocriconema xenoplax and Meloidogyne incognita on peach

. The higher rate of spirotetramat provided greater suppression than the lower rate at 24 hr, but the effect was lost at 48 and 72 hr (Table 1). Table 1 In vitro assay for the comparison of spirotetramat and fluensulfone on the mobility of Meloidogyne incognita and Mesocriconema xenoplax. M. xenoplax M. incognita % Motile nematodesa % Motile J2 Assay 1 Assay 2 Assay 1 Assay 2 Treatment 24 hrs 48 hrs 72 hrs 24 hrs 48 hrs 72 hrs 24 hrs 48 hrs 72 hrs 24 hrs 48 hrs

Andrew M. Shirley, James P. Noe, Andrew P. Nyczepir, Phillip M. Brannen, Benjamin J. Shirley, Ganpati B. Jagdale

Journal of Nematology, Volume 51 , 1–10

research-article | 17-March-2020

The effects of Meloidogyne incognita and Heterodera glycines on the yield and quality of edamame (Glycine max l.) in Arkansas

(Wrather and Koenning, 2003, 2006). Two nematodes of major concern for soybean production in Arkansas include the soybean cyst nematode (Heterodera glycines, Ichinoe) and the southern root-knot nematode (Meloidogyne incognita, Kofoid & White, Chitwood). Both nematodes have been historically present in Arkansas soybean and cotton fields (Kirkpatrick et al., 1992; Bateman et al., 2000; Walter and Barker, 1994; Tylka and Marett, 2014). A survey from 2018 identified that soybean cyst and root-knot nematode

J. E. Wilkes, T. L. Kirkpatrick

Journal of Nematology, Volume 52 , 1–15

research-article | 26-April-2019

Control of Meloidogyne incognita in sweetpotato with fluensulfone

Antoon Ploeg, Scott Stoddard, J. Ole Becker

Journal of Nematology, Volume 51 , 1–8

research-article | 30-November-2020

Transfer of Meloidogyne incognita Resistance Using Marker-assisted Selection in Sorghum

United States in 2018, sorghum was planted on approximately 6 million acres, largely in the Great Plains (USDA-NASS 2019), and it is often grown as a rotation crop with cotton (Gossypium hirsutum), corn (Zea mays), or soybeans (Glycine max) (Xavier-Mis et al., 2017). Because of its drought tolerance and relatively low input requirements, sorghum could be more widely used as a cost-effective rotation crop in the southeastern US. Meloidogyne incognita is the most commonly occurring species of root-knot

Richard F. Davis, Karen R. Harris-Shultz, Joseph E. Knoll, Hongliang Wang

Journal of Nematology, Volume 53 , 1–10

research-article | 21-October-2020

First report of southern root-knot nematode, Meloidogyne incognita, infecting Brassica nigra in Peru

Province, Peru. In order to identify the plant-parasitic nematode species, a combination of morphological, biochemical, and molecular analyses were performed. Figure 1: A and B: Roots of Brassica nigra (L.) W.D.J. Koch showing galls induced by Meloidogyne incognita (Kofoid and White, 1919; Chitwood, 1949). This population of root-knot nematode was identified to species with esterase phenotypes (n = 36 females) (Carneiro and Almeida, 2001); morphology, and morphometrics of second-stage juveniles

Jorge Airton Gómez-Chatata, Juan José Tamo-Zegarra, Teodocia Gloria Casa-Ruiz, Cristiano Bellé

Journal of Nematology, Volume 52 , 1–3

research-article | 30-November-2018

Movement of seed- and soil-applied fluopyram in soil columns

The southern root-knot nematode, Meloidogyne incognita, is among the most important plant-parasitic nematodes affecting upland cotton (Gossypium hirsutum) and soybean (Glycine max) production in the southern USA (Starr et al., 2007; Koenning, 2015; Weaver, 2015). During the 2017 cropping season yield loss estimates by the southern root-knot nematode in cotton were 2.0% or 629,000 bales across the US Cotton Belt (Lawrence et al., 2018), while losses by Meloidogyne spp. in soybean were 1.2% or 22

Travis R. Faske, Katherine Brown

Journal of Nematology, Volume 51 , 1–8

research-article | 21-October-2020

Chenopodium album is a weed host of Meloidogyne incognita (Nematoda: Meloidogynidae) in Peru

Meloidogyne sp. (Fig. 1). In order to identify the plant-parasitic nematode species infecting roots of these C. album plants, a combination of morphological, biochemical, and molecular analyses were employed. Figure 1: Meloidogyne incognita (Kofoid and White, 1919; Chitwood, 1949) root infestation symptoms on fat-hen (Chenopodium album L.). The identification to species level of Meloidogyne population was carried out using morphological measurement of second-stage juveniles (J2) (n = 20), females (n

Jorge Airton Gómez-Chatata, Teodocia Gloria Casa-Ruiz, Juan José Tamo-Zegarra, Cristiano Bellé

Journal of Nematology, Volume 52 , 1–4

research-article | 24-April-2020

First report of southern root-knot nematode, Meloidogyne incognita, infecting pomegranate, Punica granatum, in Peru

, Meloidogyne incognita (Kofoid and White, 1919; Chitwood, 1949) and M. javanica (Treub, 1885; Chitwood, 1949), the economically important parasites of pomegranate cultivars in the world (Singh et al., 2019). In a six-year-old pomegranate (cv. Wonderful) plantation aged six years old in Majes, Arequipa, Peru (16°19´37.0˝S; 72°13'08.0"W), plants after pruning were slow to develop new shoots (Figure 1A) and roots with distinct galls (Figure 1B-D) were collected on September, 2019. In order to identify the

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-2020

First report of root-knot nematode, Meloidogyne incognita, infecting hops, Humulus lupulus, in São Paulo, Brazil

according to the methodology proposed by Coolen and D’Herde (1972) and Jenkins (1964). The population number of nematodes encountered in 10 g of roots was 19,075 eggs and 2,675 Meloidogyne sp. individuals in different stages of development. In 100 cm3 of soil, the population of this nematode was 724 second-stage juveniles (J2s). Figure 1: A. Hop roots, Humulus lupulus L. (Mantiqueira cultivar), with galls formed by Meloidogyne incognita (Kofoid and White, 1919) Chitwood, 1949; B. Roots with apparent

R. F. Gonsaga, A. Souza Pollo, D. D. Nascimento, R. J. Ferreira, L. T. Braz, P. L. M. Soares

Journal of Nematology, Volume 53 , 1–4

Article | 24-July-2017

Reproduction of Meloidogyne incognita and M. graminis on Several Grain Sorghum Hybrids

A total of 27 grain sorghum hybrids were evaluated in a series of greenhouse experiments to determine their susceptibility to Meloidogyne incognita race 3 and M. graminis. Each hybrid was inoculated with 2,000 nematode eggs/pot. Reproduction by M.incognita was numerically greater than M. graminis on 93% of the hybrids tested, indicating that grain sorghum is a better host for M.incognita than M. graminis. A wide variation in host suitability was observed on these hybrids in a second experiment


Journal of Nematology, Volume 49 , ISSUE 2, 156–161

Article | 21-July-2017

Acetic Acid, 2-Undecanone, and (E)-2-Decenal Ultrastructural Malformations on Meloidogyne incognita

The use of natural compounds to control phytonematodes is significantly increasing, as most of the old synthetic pesticides have been banned due to their eco-hostile character. Plant secondary metabolites are now evaluated as biologically active molecules against Meloidogyne spp. but their target site in the nematode body is rarely specified.Herein, we report on the ultrastructure modifications of the Meloidogyne incognita J2 after treatment with nematicidal plant secondary


Journal of Nematology, Volume 48 , ISSUE 4, 248–260

research-article | 23-April-2019

Fusarium wilt of cotton may commonly result from the interaction of Fusarium oxysporum f. sp. vasinfectum with Belonolaimus longicaudatus

. vasinfectum (Fov) causes FW in cotton. FW incidence fluctuates greatly from year to year due to different management practices and environmental conditions (Davis et al., 2006; Hermanto et al., 2009; Lawrence et al., 2017). Meloidogyne incognita, the southern root-knot nematode, causes the greatest losses of any single pathogen of cotton in the USA (Lawrence et al., 2015), and the synergistic interaction of Fov with M. incognita that can result in greatly increased FW is well documented (Cooper and Brodie

Mychele B. da Silva, Richard F. Davis, Hung K. Doan, Robert L. Nichols, Robert C. Kemerait, Hannah C. Halpern, Marin T. Brewer, Ganpati Jagdale, Peng W. Chee

Journal of Nematology, Volume 51 , 1–10

research-article | 30-November-2018

First Report of Scutellonema brachyurus (Steiner, 1938) Andrassy, 1958 and Occurrence of Meloidogyne incognita (Kofoid & White, 1919) Chitwood, 1949 in Belgium

, our survey revealed the presence of Scutellonema brachyurus and the tropical root-knot nematode Meloidogyne incognita (Kofoid and White, 1919) Chitwood, 1949 for the first time, respectively, on banana (Musa basjoo Siebold & Zucc. ex Iinuma) and red ginger (Hedychium greenii W. W. Sm.) in Belgium. Materials and methods After removing detritus layer from the surface, soil and root samples were collected from the upper 30 cm soil layer around the rhizosphere of Musa basjoo and Hedychium greenii at

Huu Tien Nguyen, Quang Phap Trinh, Marjolein Couvreur, Phougeishangbam Rolish Singh, Wilfrida Decraemer, Wim Bert

journal of nematology, Volume 51 , 1–6

research-article | 30-November-2019

Nematicidal effect of cruciferous bio-fumigants against the root-knot nematode, Meloidogyne incognita infesting okra

an alternative to methyl bromide in horticulture and broad agriculture to manage pests (Ghoname et al., 2015). Majority of the studies on bio-fumigation have been conducted in laboratory and greenhouse conditions. Keeping all the facts in mind, this study was performed to evaluate the efficacy of cruciferous bio-fumigants against root-knot nematode, Meloidogyne incognita infesting okra under field conditions in 2017 to 2018 and 2018 to 2019. Materials and methods The experiment was conducted in

J.A. Patil, Anil Kumar, Saroj Yadav, K.K. Verma

Journal of Nematology, Volume 52 , 1–7

Research Article | 26-September-2018

Oat, Wheat, and Sorghum Genotype Reactions to Meloidogyne incognita and Meloidogyne javanica

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


Journal of Nematology, Volume 49 , ISSUE 4, 386–389

research-article | 30-November-2019

Effect of seed-applied fluopyram on Meloidogyne incognita infection and maturity in cotton and soybean

The southern root-knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood race 3, is an important yield-limiting pest of cotton (Gossypium hirsutum L.) and soybean (Glycine max (L.) Merr.) in the southern USA (Thomas and Kirkpatrick, 2001; Koenning, 2015). Furthermore, it is the most prevalent species of root-knot nematode in Arkansas (Ye et al., 2019). Seed cotton losses in 2018 were estimated at 2.4% (966,600 bales) across the US Cotton Belt (Lawrence et al., 2019). While non-soybean

Tracy Hawk, Travis R. Faske

Journal of Nematology, Volume 52 , 1–7

research-article | 30-November-2020

Effect of fluensulfone on different functional genes of root-knot nematode Meloidogyne incognita

directly treating the nematode J2s with different concentrations of fluensulfone (10, 50, and 100 ppm), followed by analysis of transcript levels of the respective genes by quantitative real-time PCR (qRT PCR) at two time points (5 and 10 hr post exposure). Materials and methods Nematode population and drug material The pure culture of an Indian isolate of Meloidogyne incognita race 1 was raised on susceptible tomato plants (Solanum lycopersicum cv. Pusa ruby) in a glasshouse at ICAR-Indian

Alkesh Hada, Divya Singh, Kranti Kavalipurapu Veera Venkata Satyanarayana, Madhurima Chatterjee, Victor Phani, Uma Rao

Journal of Nematology, Volume 53 , 1–14

research-article | 09-April-2020

Examine medicinal plants from South Africa for suppression of Meloidogyne incognita under glasshouse conditions

school gardens, as well as smallholder fields in SA showed that root-knot nematodes are the predominant biotic factor affecting the production of vegetables: 48 of 51 sites sampled were infested with root-knot nematodes (Mtshali et al., 2002). Most of the commercial tomato varieties grown in SA are susceptible to Meloidogyne incognita race 2 and M. javanica (Fourie et al., 2001). Nematicide application is usually effective in reducing plant-parasitic nematode population densities below damage

Mbokota Candy Khosa, Zakheleni Dube, Dirk De Waele, Mieke Stefanie Daneel

Journal of Nematology, Volume 52 , 1–7

research-article | 30-November-2019

Mixtures of fluopyram and abamectin for management of Meloidogyne incognita in tomato

Nematodes are important parasites of crops. The economic losses caused by nematodes worldwide exceed 157 billion US dollars annually (Abad et al., 2008). Root-knot nematodes have a wide host range and are especially harmful to plants in the Cucurbitaceae and Solanaceae (Nicol et al., 2011). Tomato is extensively cultivated worldwide and highly susceptible. When the southern root-knot nematode (RKN) Meloidogyne incognita infects tomato, the second-stage juveniles (J2) penetrate young roots

Qing-Qing Li, Jing-Jing Li, Qi-Tong Yu, Ze-Yu Shang, Chao-Bin Xue

Journal of Nematology, Volume 52 , 1–11

research-article | 06-November-2020

Plant health evaluations of Belonolaimus longicaudatus and Meloidogyne incognita colonized bermudagrass using remote sensing

). Table 1. Pearson correlation coefficients† resulting from linear correlation of data parameters from 2018 and 2019 Meloidogyne incognita infested bermudagrass microplots in Auburn, AL. 2018 2019 July August September July August September Turf visual qualitya NDVIb 0.59** NS NS NS NS 0.63*** NDREc NS NS NS NS NS 0.66*** NDRE NDVI NS 0.72*** 0.93*** 0.60*** 0.72*** 0.95*** Meloidogyne incognita Turf visual quality NS −0.39* NS −0.64* −0.39* −0.59** NDVI NS

Will L. Groover, Kathy S. Lawrence

Journal of Nematology, Volume 52 , 1–13

research-article | 30-November-2018

Validation of the Chemotaxis of Plant Parasitic Nematodes Toward Host Root Exudates

few days (Degen et al., 2004; Rasmann et al., 2005; Degenhardt et al., 2009). This indirect defense mechanism of maize sheds light on an intrinsic activity of root-derived allelochemicals (e.g., (E)-β-caryophyllene) in attracting selective nematodes. In line with this scenario, the soil supplement of charcoal hindered the invasion of host roots by PPN (e.g., Meloidogyne incognita, Peacock, 1961), together suggesting that discrete organic substances exuded from plant roots play important roles in

Wenshan Liu, Alexis L. Jones, Heather N. Gosse, Kathy S. Lawrence, Sang-Wook Park

journal of nematology, Volume 51 , 1–10

Article | 24-July-2017

Grafting and Paladin Pic-21 for Nematode and Weed Management in Vegetable Production

Two years of field trials conducted in a Meloidogyne incognita-infested field evaluated grafting and Paladin Pic-21 (dimethyl disulfide:chloropicrin [DMDS:Pic] 79:21) for root-knot nematode and weed control in tomato and melon. Tomato rootstocks evaluated were; ‘TX301’, ‘Multifort’, and ‘Aloha’. ‘Florida 47’ was the scion and the nongrafted control. A double crop of melon was planted into existing beds following tomato harvest. Melon


Journal of Nematology, Volume 48 , ISSUE 4, 231–240

research-article | 30-November-2021

Additional fertilizer and nematicide combinations on upland cotton to manage Rotylenchulus reniformis and Meloidogyne incognita in Alabama

restricted to tropical and subtropical regions because of elevated temperatures and humidity that are ideal for growth (Luttrell et al., 1994). These climate conditions are found in the cotton belt of the Southern United States where most cotton production occurs (Jones and Durand, 1959). The reniform nematode (Rotylenchulus reniformis Linford and Oliveira) and the southern root-knot nematode (Meloidogyne incognita Kofoid and White) are the most economically important nematodes on upland cotton

Kara L. Gordon, Drew W. Schrimsher, Kathy S. Lawrence

Journal of Nematology, Volume 54 , 1–15

research-article | 30-November-2020

Isolation and characterization of endophytic bacteria from tomato foliage and their in vitro efficacy against root-knot nematodes

native biological control agents against nematodes. Therefore, the present study aims to isolate and characterize the native endophytic bacteria associated with the leaves and stems of the tomato plant and to evaluate their potentiality against root-knot nematode, Meloidogyne incognita race2. Materials and methods Collection and sterilization of plant samples For isolation of endophytic bacteria, healthy leaf and stem samples were collected from randomly selected healthy plants of Solanum

Binita Basumatary, Debanand Das, B. N. Choudhury, Pranab Dutta, Ashok Bhattacharyya

Journal of Nematology, Volume 53 , 1–16

research-article | 16-April-2019

First report of cultivated Cretan mountain tea (Sideritis syriaca) as a host of Meloidogyne hapla and M. javanica in Crete, with some additional records on the occurrence of Meloidogyne species in Greece

Emmanuel A. Tzortzakakis, Carolina Cantalapiedra-Navarrete, Antonio Archidona-Yuste, Maria Kormpi, Juan E. Palomares-Rius, Pablo Castillo

Journal of Nematology, Volume 51 , 1–4

Research Article | 17-October-2018

Discovery and Identification of Meloidogyne Species Using COI DNA Barcoding

DNA barcoding with a new cytochrome oxidase c subunit 1 primer set generated a 721 to 724 bp fragment used for the identification of 322 Meloidogyne specimens, including 205 new sequences combined with 117 from GenBank. A maximum likelihood analysis grouped the specimens into 19 well-supported clades and four single-specimen lineages. The “major” tropical apomictic species (Meloidogyne arenaria, Meloidogyne incognita, Meloidogyne javanica) were not discriminated by this barcode although some

Thomas Powers, Timothy Harris, Rebecca Higgins, Peter Mullin, Kirsten Powers

Journal of Nematology, Volume 50 , ISSUE 3, 399–412

Article | 21-July-2017

Mitochondrial Haplotype-based Identification of Root-knot Nematodes (Meloidogyne spp.) on Cut Foliage Crops in Florida

and (ii) evaluate the feasibility of using the mtDNA haplotype as a molecular diagnostic tool for rapid identification of large samples of RKN. A total of 200 Meloidogyne females were collected from cut foliage plant roots. Meloidogyne spp. were identified by PCR and RFLP of mitochondrial DNA. PCR and RFLP of mitochondrial DNA were effective in discriminating the Meloidogyne spp. present. Meloidogyne incognita is the most dominant RKN on cut foliage crops in Florida and must be a high target for


Journal of Nematology, Volume 48 , ISSUE 3, 193–202

Article | 05-December-2017

Nematicidal Effects of 5-Aminolevulinic Acid on Plant-Parasitic Nematodes

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


Journal of Nematology, Volume 49 , ISSUE 3, 295–303

Original Research | 18-July-2017

Diversity of Root-knot Nematodes Associated with Tubers of Yam (Dioscorea spp.) Established Using Isozyme Analysis and Mitochondrial DNA-based Identification

identified using enzyme phenotyping (esterase and malate dehydrogenase) and mitochondrial DNA (mtDNA) NADH dehydrogenase subunit 5 (Nad5) barcoding. Examination of 48 populations revealed that yam tubers were infested by Meloidogyne incognita (69%), followed by M. javanica (13%), M. enterolobii (2%), and M. arenaria (2%). Most of the tubers sampled (86%) were infected by a single species, and multiple species of RKN were detected in 14% of the samples. Results of both identification methods revealed the

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 | 30-November-2019

Evaluation of fluopyram for the control of Ditylenchus dipsaci in sugar beet

belonging to Ascomycota (Veloukas and Karaoglanidis, 2012). The acute LD50 of fluopyram to rats via oral administration is greater than 2,000 mg/kg (European Food Safety Authority, 2013), as opposed to aldicarb, which is 0.5 to 1.5 mg/kg (Oka et al., 2012). The active ingredient has also nematicidal or nemastatic properties (Faske and Hurd, 2015). Nematicides with fluopyram as the active ingredient are registered in several countries to control plant-parasitic nematodes such as Meloidogyne incognita or

Alan Storelli, Andreas Keiser, Reinhard Eder, Samuel Jenni, Sebastian Kiewnick

Journal of Nematology, Volume 52 , 1–10

research-article | 30-November-2020

Reproduction of Meloidogyne arenaria race 2 on Flue-cured tobacco possessing resistance genes Rk1 and/or Rk2

Noah Adamo, Charles S. Johnson, T. David Reed, Jonathan D. Eisenback

Journal of Nematology, Volume 53 , 1–13

research-article | 30-November-2020

Reproduction of Meloidogyne arenaria race 2 on flue-cured tobacco with putative resistance derived from Nicotiana repanda

both Rk1 and Rk2 to populations of M. javanica (Johnson, unpublished data) and M. incognita race 3 (Pollok et al., 2016) from Virginia flue-cured tobacco fields. Meloidogyne incognita had historically been regarded as the greatest nematode threat to tobacco in Virginia (Johnson, 1989), but over the past several decades, M. arenaria has superseded M. incognita in abundance (Eisenback, 2012). A 2004 survey of 170 Virginia tobacco fields found 43.5% of surveyed fields were infested with root-knot

Noah Adamo, Charles S. Johnson, T. David Reed, Jonathan D. Eisenback

Journal of Nematology, Volume 53 , 1–9

research-article | 30-November-2018

Identification of Suitable Meloidogyne spp. Housekeeping Genes

Weiming Hu, Peter M. DiGennaro

journal of nematology, Volume 51 , 1–11

research-article | 30-November-2020

Recombinase Polymerase Amplification assays for detection of the major tropical root-knot nematodes

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 | 03-December-2018

A novel in vitro chemotaxis bioassay to assess the response of Meloidogyne incognita towards various test compounds

Tagginahalli N. Shivakumara, Tushar K. Dutta, Uma Rao

Journal of Nematology, Volume 50 , ISSUE 4, 487–494

research-article | 30-November-2019

Effect of Heterodera schachtii female age on susceptibility to three fungal hyperparasites in the genus Hyalorbilia

assigned to the genus Hyalorbilia (H.-O. Baral, Tübingen, Germany, pers. comm.). ARF was isolated from 9 out of 95 populations of H. glycines in Arkansas in the late 1980s (Kim and Riggs, 1991). Field soil naturally infested with ARF suppressed the number of cysts developing on soybean seedlings by more than 50% compared with seedlings grown in autoclaved soil. In tests with females of Heterodera species or egg masses of Meloidogyne incognita placed on cultures of the fungus, ARF parasitized eggs of M

J. Smith Becker, J. Borneman, J. O. Becker

Journal of Nematology, Volume 52 , 1–12

research-article | 30-November-2020

Evaluation of a new chemical nematicide, fluazaindolizine (ReklemelTM active), for plant-parasitic nematode management in bermudagrass

novel sulfonamide recently discovered to have nematicidal properties (Corteva Agriscience, Indianapolis, IN) (Lahm et al., 2017; Thoden and Wiles, 2019). Assessments of fluazaindolizine in vitro have shown its ability to significantly reduce motility and activity of Meloidogyne incognita juveniles compared to untreated juveniles, and greenhouse assays of fluazaindolizine on tomato have lowered M. incognita’s reproductive factor (Rf = final population density/initial population density) (Wram and

Will L. Groover, Kathy S. Lawrence

Journal of Nematology, Volume 53 , 1–14

Research Article | 03-September-2018

Revisiting the Life-Cycle of Pasteuria penetrans Infecting Meloidogyne incognita under Soil-Less Medium, and Effect of Streptomycin Sulfate on its Development

Victor Phani, Uma Rao

Journal of Nematology, Volume 50 , ISSUE 2, 91–98

Research Article | 17-October-2018

Nematicidal Weeds, Solanum nigrum and Datura stramonium

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

Article | 21-July-2017

Efficacy of Various Application Methods of Fluensulfone for Managing Root-knot Nematodes in Vegetables

growth-chamber experiment, the systemic activity and phytotoxicity of fluensulfone were also evaluated on tomato (Solanum lycopersicum), eggplant (Solanum melongena), cucumber, and squash (Curcurbita pepo). At the seedling stage, foliage of each crop was sprayed with fluensulfone at 3, 6, and 12 g a.i./liter, oxamyl at 4.8 g a.i./liter, or water (nontreated control). Each plant was inoculated with Meloidogyne incognita juveniles 2 d after treatment. There were six replications per treatment and the


Journal of Nematology, Volume 48 , ISSUE 2, 65–71

research-article | 30-November-2020

Degree of resistance of Solanum torvum cultivars to Mi-1.2-virulent and avirulent isolates of Meloidogyne incognita, Meloidogyne javanica, and Meloidogyne luci

and avirulent isolates of M. incognita, M. javanica, and M. luci. Meloidogyne incognita V6 and M. luci TK4 isolates did not produce any egg masses on roots of Boğaç. However, the other RKN isolates produced a few egg masses (< 2) on both S. torvum rootstocks Hawk and Boğaç. All RKN isolates also produced egg masses (> 38) on roots of Faselis F1, with the highest number (> 280) produced by M. javanica isolate K5, and the least (< 39) by M. luci isolate TK4 (Table 3). Differences among the number of

Seren Sargın, Zübeyir Devran

Journal of Nematology, Volume 53 , 1–7

research-article | 26-April-2019

First report of Meloidogyne javanica on Ginger and Turmeric in the United States

Abolfazl Hajihassani, Weimin Ye, Brooke B. Hampton

Journal of Nematology, Volume 51 , 1–3

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