research-article | 30-November-2020
surveyed flue-cured tobacco fields, with M. arenaria infesting 56.7% of the fields surveyed, while M. hapla, M. incognita, and M. javanica infested 25.0, 16.7, and 11.7% of surveyed fields, respectively (Eisenback, 2012). As of 2010, the proportion of infested fields had not changed meaningfully (44.9%), with similar trends in species distribution observed in 276 surveyed Virginia tobacco fields. Meloidogyne arenaria continued to predominate, infesting 58.8% of surveyed fields, while M. incognita was
Noah Adamo,
Charles S. Johnson,
T. David Reed,
Jonathan D. Eisenback
Journal of Nematology, Volume 53 , 1–13
Research Article | 31-May-2018
Tifguard was released in 2008 as a peanut cultivar with a high level of resistance to Meloidogyne arenaria. Our objective was to determine the role of temperature on infection and development of M. arenaria in Tifguard compared to that in the nematode susceptible cultivar, Georgia-06G. Temperature affected the rate of nematode infection and development in both Tifguard and Georgia-06G (P ≤ 0.05). In Georgia-06G, egg-laying females were observed 25, 20 or 25 days after inoculation at 28°C, 31°C
Weimin Yuan,
C. C. Holbrook,
Y. Chu,
P. Ozias-Akins,
D. W. Dickson
Journal of Nematology, Volume 50 , ISSUE 1, 33–40
Article | 05-December-2017
Abstract: The bacterium Pasteuria penetrans is a parasite of root-knot nematodes (Meloidogyne spp.). Endospores of P. penetrans attach to the cuticle of second-stage juveniles (J2) and subsequently sterilize infected females. When encumbered by large numbers of spores, juveniles are less mobile and their ability to infect roots is reduced. This study looked at different factors that influence spore attachment of P. penetrans to the root-knot nematode Meloidogyne arenaria. Pretreatment of J2
CHANG LIU,
PATRICIA TIMPER,
PINGSHENG JI,
TESFAMARIAM MEKETE,
SOUMI JOSEPH
Journal of Nematology, Volume 49 , ISSUE 3, 304–310
research-article | 16-April-2020
Peanut (Arachis hypogaea) is an important crop in the United States with 757,000 ha planted in 2018, worth $1.15 billion (NASS-USDA, 2019a, b). Much of the production is concentrated in the Southeast where Meloidogyne arenaria (peanut root-knot nematode (PRKN)) can significantly reduce yields with suppression approaching 50% observed in field research (Rodriguez-Kabana and Robertson, 1987; Rodriguez-Kabana et al., 1994a, 1994b). Damage thresholds for this nematode are 1 egg/100 cm3, so any
Zane J. Grabau,
Mark D. Mauldin,
Alemayehu Habteweld,
Ethan T. Carter
Journal of Nematology, Volume 52 , 1–10
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
research-article | 30-November-2019
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-2020
to August, galling was lowest on 81-R-617A and BAG 29-15-3-32-1 relative to T-15-1-1, which in this trial experienced the most root galling observed across all four trials (Table 1). Galling was significantly lower on 81-R-617A than on Hicks in three of the four trials. No entry consistently exhibited the highest levels of root galling in these trials (Table 1).
Table 1.
Root galling of flue-cured tobacco entries by Meloidogyne arenaria race 2 in greenhouse pot tests in 2017
Noah Adamo,
Charles S. Johnson,
T. David Reed,
Jonathan D. Eisenback
Journal of Nematology, Volume 53 , 1–9
research-article | 30-November-2018
. Following successful penetration, P. penetrans forms either microcolonies or filamentous structures (rhizoids) that extend into the nematode pseudocoelom (Davies et al., 2011). During these early stages of infection, the nematode may produce antimicrobial peptides to prevent proliferation (Pillai et al., 2003). In the later stages of infection, sporogenesis occurs and mature endospores are formed within the body of the female nematode. In a recent study, prior exposure of Meloidogyne arenaria J2 to root
Chang Liu,
Pingsheng Ji,
Patricia Timper
Journal of Nematology, Volume 51 , 1–8
research-article | 21-January-2022
pathogen because of its ability to reproduce on RKN resistant plant species, including peach (RMia and RMja genes), peach-almond hybrid rootstocks, pepper (N gene), tomato (Mi-1 gene), and tobacco cv. NC 95 (Rk1 gene) (Stanley et al., 2009; Maquilan et al., 2018a; Marquez et al., 2021).
Meloidogyne arenaria was also found infecting Flordaguard peach trees in established orchards in Florida. The nematode was causing severe root galling, plant dieback, and stunted growth (Brito et al., 2016; Dickson and
Sai Qiu,
Mary Ann D. Maquilan,
Jose X. Chaparro,
Janete A. Brito,
Thomas G. Beckman,
Donald W. Dickson
Journal of Nematology, Volume 53 , 1–12
research-article | 30-November-2018
symptoms such as stunting, yellowing, wilting, and yield losses (Caillaud et al., 2008; Moens et al., 2009). Additionally, RKN can increase the severity of plant damage when soilborne fungi such as Fusarium are present (Wang and Roberts, 2006).
Meloidogyne arenaria, M. incognita, and M. javanica have commonly been referred to as ‘major’ RKN species because they are globally distributed and are the most destructive nematode species infecting vegetable crops, particularly cucurbitaceous and solanaceous
Gökhan Aydınlı,
Ertan Sait Kurtar,
Sevilhan Mennan
journal of nematology, Volume 51 , 1–10
research-article | 30-November-2019
agriculture and turfgrass production systems. To meet this objective, three experiments were conducted under greenhouse conditions and each was repeated.
Material and methods
Host status of common weeds to Meloidogyne spp.
We evaluated the host status of yellow and purple nutsedge and coffee senna to Meloidogyne arenaria, M. enterolobii, M. floridensis, M. hapla, M. incognita, and M. javanica. ‘AgriSet 334’ tomato (Solanum lycopersicum) was included as a susceptible control. This experiment was
Maria de Lourdes Mendes,
Donald W. Dickson,
William T. Crow
Journal of Nematology, Volume 52 , 1–9
research-article | 30-November-2020
a mixture of two root-knot nematode species: the Parana coffee root-knot nematode, Meloidogyne paranaensis (Carneiro et al., 1996) and the peanut root-knot nematode, Meloidogyne arenaria (Neal, 1889) Chitwood, 1949. To the best of our knowledge, it is the first report of M. paranaensis in the continental United States.
Meloidogyne paranaensis was first described in 1996 in the state of Paraná, Brazil (Carneiro et al., 1996; Campos and Vallain, 2005). This species is considered as one of the
Sergei A. Subbotin,
Julie Burbridge
Journal of Nematology, Volume 53 , 1–6
research-article | 17-March-2020
Meloidogyne arenaria (Neal, 1892; Chitwood, 1949) on lavender (Lavandula angustifolia Mill.).
PCR was performed in a total volume of 25 μL containing the following: 2.5 μL 10X PCR buffer, 2 mM MgCl2, 200 μM dNTPs, 0.4 μM of each primer, 1 U Taq DNA Polymerase (ABM), 20 ng of DNA and molecular grade water. PCR was performed in a SimpliAmp™ Thermal Cycler (Applied Biosystems, CA, USA) using reaction conditions detailed in cited publications. PCR products were electrophoresed on a 1.5% agarose gel in 1X
Tevfik Özalp,
Gonca Könül,
Önder Ayyıldız,
Adnan Tülek,
Zübeyir Devran
Journal of Nematology, Volume 52 , 1–3
Research Article | 17-October-2018
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
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
JILL R. POLLOK,
CHARLES S. JOHNSON,
J. D. EISENBACK,
T. DAVID REED
Journal of Nematology, Volume 48 , ISSUE 2, 79–86
research-article | 30-November-2018
host and germinated after sterilization and placed on moist paper until radical emergence. Seedlings were then transplanted into CYG Germination Pouches (Mega International, Newport, MN) for nematode inoculation. All plants were grown in individual pouches. Pouches were watered every 24 hr throughout the 30-d experiment with sterilized deionized water.
Freshly hatched Meloidogyne arenaria second-stage juveniles (J2) were exposed to P. penetrans at a rate of 1 J2: 200 endospores. The concentration
Ruhiyyih Dyrdahl-Young,
Weiming Hu,
Peter DiGennaro
Journal of Nematology, Volume 51 , 1–8