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Article | 05-December-2017

A New Race (X12) of Soybean Cyst Nematode in China

The soybean cyst nematode (SCN), Heterodera glycines, is a serious economic threat to soybean-producing regions worldwide. A new SCN population (called race X12) was detected in Shanxi province, China. Race X12 could reproduce on all the indicator lines of both race and Heterodera glycines (HG) type tests. The average number of females on Lee68 (susceptible control) was 171.40 with the lowest Female Index (FI) 61.31 on PI88788 and the highest FI 117.32 on Pickett in the race test. The average


Journal of Nematology, Volume 49 , ISSUE 3, 321–326

Research Article | 31-May-2018

Identification of HG Types of Soybean Cyst Nematode Heterodera glycines and Resistance Screening on Soybean Genotypes in Northeast China

Soybean cyst nematode (SCN, Heterodera glycines Ichinohe) is a serious soybean pathogen worldwide. HG Type 0 had been a predominant SCN in Heilongjiang province, the largest soybean (Glycine max L.) producing region in China. Recently, increased virulence on resistant cultivars originally developed for resistance to HG Type 0 was observed in fields. In order to identify new cultivars resistant to local SCN populations, two soil samples were collected from two counties (Anda and Wuchang) in

Cui Hua, Chunjie Li, Yanfeng Hu, Yanzhi Mao, Jia You, Mingze Wang, Jingsheng Chen, Zhongyan Tian, Congli Wang

Journal of Nematology, Volume 50 , ISSUE 1, 41–50

Research Article | 17-October-2018

Terrestrial Non-Parasitic Nematode Assemblages associated With Glyphosate-tolerant and Conventional Soybean-Based Cropping Systems

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

Original Research | 04-September-2018

Optimization of Mixed Solid-state Fermentation of Soybean Meal by Lactobacillus Species and Clostridium butyricum

Soybean meal is the main vegetable protein source in animal feed. Soybean meal contains several anti-nutritional factors, which directly affect digestion and absorption of soy protein, thereby reducing growth performance and value in animals. Fermented soybean meal is rich in probiotics and functional metabolites, which facilitates soybean protein digestion, absorption and utilization in piglets. However, the mixed solid-state fermentation (SSF) conditions of soybean meal remain to be optimized


Polish Journal of Microbiology, Volume 67 , ISSUE 3, 297–305

short-communication | 28-June-2019

Bacterial Diversity in Soybean Rhizosphere Soil at Seedling and Mature Stages

soil samples. The soybean field was located in Xianyang, Shaanxi, NW China (107°38’–109°10’ E, 34°11’–35°32’ N), which is a typical warm temperate continental monsoon climate. The soil is dominated by ash-calcium soil. The soybean rhizosphere soil samples, numbered as S, were collected on June 24, 2016, when after more than half of the cotyledons were breaking out, and also the soil samples, numbered as M, were collected on September 30, 2016. At this time, the leaves and beans were dehydrated


Polish Journal of Microbiology, Volume 68 , ISSUE 2, 281–284

research-article | 03-June-2019

Field and greenhouse evaluations of soil suppressiveness to Heterodera glycines in the Midwest corn-soybean production systems

Soybean cyst nematode (SCN), Heterodera glycines Ichinohe, is widely distributed throughout most soybean producing regions in the world (Riggs, 2004). This nematode has become a major yield-limiting factor in soybean production and causes an estimated annual yield loss of about $1 billion in the USA (Koenning and Wrather, 2010). Crop rotation, cultural practices, resistant cultivars, and nematicides are employed to reduce soybean yield suppression caused by SCN. Particularly, rotation of SCN

Weiming Hu, Eyob Kidane, Deborah A. Neher, Senyu Chen

Journal of Nematology, Volume 51 , 1–12

research-article | 30-November-2018

Swine manure application enriches the soil food web in corn and soybean production

In the United States, corn and soybean are among the most important crops, comprising 36.0 and 36.2 million hectares, respectively, in 2018, which was 55.5% of total area planted to principal crops (NASS-USDA, 2018). Since these crops cover such a large area, identifying management practices in corn and soybean production that promote sustainability (productivity over time while conserving natural resources) is an important goal. Nematodes play an important role in sustainability because

Zane J. Grabau, Yong Bao, Jeffrey A. Vetsch, Senyu Chen

Journal of Nematology, Volume 51 , 1–14

Article | 21-July-2017

New Cyst Nematode, Heterodera sojae n. sp. (Nematoda: Heteroderidae) from Soybean in Korea

A new soybean cyst nematode Heterodera sojae n. sp. was found from the roots of soybean plants in Korea. Cysts of H. sojae n. sp. appeared more round, shining, and darker than that of H. glycines. Morphologically, H. sojae n. sp. differed from H. glycines by fenestra length (23.5–54.2 mm vs. 30–70 mm), vulval silt length (9.0–24.4 mm vs. 43–60 mm), tail length of J2 (54.3–74.8 mm vs. 40–61 mm), and hyaline part of J2 (32.6–46.3 mmvs. 20


Journal of Nematology, Volume 48 , ISSUE 4, 280–289

Report | 21-July-2017

First Report of the Spiral Nematode Helicotylenchus microlobus Infecting Soybean in North Dakota

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


Journal of Nematology, Volume 49 , ISSUE 1, 1–1

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

original-paper | 31-May-2021

Enhancing the Efficiency of Soybean Inoculant for Nodulation under Multi-Environmental Stress Conditions

Introduction Bradyrhizobium is used as a soybean inoculant, because it reduces atmospheric nitrogen gas (N2) into a nitrogenous compound that can be utilized directly by the plant. Application of a Bradyrhizobium inoculant, an environment-friendly biofertilizer, is, therefore, an essential factor that can increase the soybean yield and reduce the utilization of chemical N fertilizer (Suyal et al. 2016; Ntambo et al. 2017; Jalloh 2020). Although the effective nitrogen-fixing Bradyrhizobium is


Polish Journal of Microbiology, Volume 70 , ISSUE 2, 257–271

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

Edamame, also known as vegetable soybean, is a high-fiber, low-sugar snack that has gained popularity in the USA in recent years. Not only does edamame have a high protein content but it also contains all the essential amino acids the human body requires for proper nutrition (Dixit et al., 2011). Compared to traditional soybeans grown for oil or grain production that are harvested at reproductive maturity, edamame is a shorter-season crop that is harvested before the seed is mature. Edamame is

J. E. Wilkes, T. L. Kirkpatrick

Journal of Nematology, Volume 52 , 1–15

research-article | 23-April-2019

Nematicidal Activity of Fosthiazate Against Soybean Cyst Nematode Heterodera glycines

Soybean (Glycine max, Family Leguminosae) is widely grown worldwide due to its unique property of possessing high plant-based protein contents, lipid minerals, and vitamins (Olaoye and Ade-Omowaye, 2011). Soybean cyst nematode (SCN, Heterodera glycines) infection is the most serious disease affecting soybean production worldwide; this infection was reported for the first time in 1899 in Northeast China, since then, this nematode has been spread widely in various regions, including Asia, America

Hai Yan Wu, Man Luo, Lu Yuan Zhang, Xun Bo Zhou

Journal of Nematology, Volume 51 , 1–9

research-article | 30-November-2020

Slight induction and strong inhibition of Heterodera glycines hatching by short-chain molecules released by different plant species

Soybean (Glycine max (L.) Merr) is an important source of proteins and oil, and therefore, more research are essential to increase productivity under different conditions, including biotic stress (Pagano and Miransari, 2016). The soybean cyst nematode (SCN, Heterodera glycines) is one of the main pathogens causing yield reduction worldwide and, just in the United States it is responsible for losses of more than U$1 billion annually (Koenning and Wrather, 2010; Wu et al., 2019). The planting of

Jeanny A. Velloso, Vicente P. Campos, Willian C. Terra, Aline F. Barros, Márcio P. Pedroso, Luma A. Pedroso, Letícia L. Paula

Journal of Nematology, Volume 53 , 1–12

Research Article | 03-September-2018

An Agent-Based Metapopulation Model Simulating Virus-Based Biocontrol of Heterodera Glycines

With recently discovered soybean cyst nematode (SCN) viruses, biological control of the nematodes is a theoretical possibility. This study explores the question of what kinds of viruses would make useful biocontrol agents, taking into account evolutionary and population dynamics. An agent-based model, Soybean Cyst Nematode Simulation (SCNSim), was developed to simulate within-host virulence evolution in a virus-nematode-soybean ecosystem. SCNSim was used to predict nematode suppression under a

Safyre Anderson, Chinmay Soman, Sadia Bekal, Leslie Domier, Kris Lambert, Kaustubh Bhalerao

Journal of Nematology, Volume 50 , ISSUE 2, 79–90

research-article | 30-November-2018

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

PPN toward or away from test compounds (e.g., root extracts and exudates). The specific objectives were to (i) develop a new and unique bioassay for PPN chemotaxis, and (ii) validate this bioassay using three PPN species (i.e., R. reniformis, M. incognita, and H. glycines) exposed to root extracts and exudates from host (cotton and soybean) and/or non-host (peanut) plants, which underpin the crucial properties of root exudates (esp., hydrophiles) in the host-specific recognition and orientation of

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

journal of nematology, Volume 51 , 1–10

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

propagating material. Aloe infection by M. javanica and M. incognita has been reported in Crete, Greece (Palomares-Rius et al., 2015). To our knowledge, this work consists the first report of infection of aloe by M. hispanica in Europe. Corn and soybean (Glycine max (L) Merr) are common crops in the area of Ag. Athanasios, Drama, North Greece. Roots with surrounding soil of young corn plants (hybrid P1921) from two fields and soybean plants (variety 92B63) from one field indicating symptoms of severe

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-March-2020

Fungal communities associated with Heterodera glycines and their potential in biological control: a current update

The soybean cyst nematode (Heterodera glycines, SCN) was discovered as a significant pest of soybean in 1954 in North Carolina in the USA, and subsequently spread across a few counties in Arkansas, Missouri, Kentucky and Tennessee, as well as few other pockets in North Carolina (Winstead and Skotland, 1955). In 2014, bolstered by the increase in planting of soybean, the SCN has become a significant plant health issue all over the agrarian eastern continental United States as well as Hawaii and

Deepak Haarith, Kathryn E. Bushley, Senyu Chen

Journal of Nematology, Volume 52 , 1–17

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

research-article | 30-November-2018

Active and inactive forms of biotin synthase occur in Heterodera glycines

The soybean cyst nematode (SCN), Heterodera glycines, is an obligate plant parasite that poses a serious threat to soybean production worldwide. It is the most damaging pest of soybean in the USA and is estimated to cause more yield loss than any other disease (Koenning and Wrather, 2010; Wrather et al., 2010; Allen et al., 2017). Yield losses are attributed to the fact that this nematode injects a complex mixture of proteins and metabolites into the plant root cells (Niblack et al., 2006) and

Khee Man Kwon, Sadia Bekal, Leslie L. Domier, Kris N. Lambert

Journal of Nematology, Volume 51 , 1–12

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 | 03-December-2018

Five life stage-specific transcriptome assemblies for the reniform nematode, Rotylenchulus reniformis Linford & Oliveira

The reniform nematode (Rotylenchulus reniformis Linford and Oliveira) is a semi-endoparasitic nematode that is a pathogen of numerous major crops such as cotton and soybean. Here, the authors present transcriptome assemblies of the egg, second-stage juvenile (J2), J3, vermiform adult, and sedentary female life stages of this important plant pathogen.

Kurt C. Showmaker, William S. Sanders, Sebastian Eves-van den Akker, Brigitte E. Martin, Franklin E. Callahan, Daniel G. Peterson, Martin J. Wubben

Journal of Nematology, Volume 50 , ISSUE 4, 1–2

research-article | 24-April-2019

DNA barcoding evidence for the North American presence of alfalfa cyst nematode, Heterodera medicaginis

Alfalfa N/A 13 H. medicaginis Kearny County, Kansas Alfalfa N/A 14 H. medicaginis Kearny County, Kansas Alfalfa N/A 15 H. medicaginis Kearny County, Kansas Alfalfa N/A P169028 H. medicaginis Kearny County, Kansas Alfalfa 18S AY912048 N838 H. schachtii Goshen County, Wyoming Soybean COI MK093062 N839 H. schachtii Goshen County, Wyoming Soybean COI MK093063 N864 H. schachtii Goshen County, Wyoming Soybean COI MK093064 N4143 Meloidodera sp. Big Thicket National Preserve

Thomas Powers, Andrea Skantar, Tim Harris, Rebecca Higgins, Peter Mullin, Saad Hafez, Zafar Handoo, Tim Todd, Kirsten Powers

Journal of Nematology, Volume 51 , 1–17

Article | 21-July-2017

Agamermis (Nematoda: Mermithidae) Infection in South Carolina Agricultural Pests

Native and invasive stink bugs (Hemiptera: Pentatomidae) and the closely related invasive Megacopta cribraria (Hemiptera: Plataspidae) are agricultural pests in the southeastern United States. Natural enemies, from various phyla, parasitize these pests and contribute to population regulation. We specifically investigated Nematoda infections in pentatomid and plataspid pests in one soybean field in South Carolina in 2015. Nematodes were identified through molecular and morphological


Journal of Nematology, Volume 48 , ISSUE 4, 290–296

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 | 30-November-2020

Pratylenchus smoliki, a new nematode species (Pratylenchidae: Tylenchomorpha) from the Great Plains region of North America

et al., 2021). In this manuscript, we describe a second of those undescribed species, previously referred to as Pratylenchus sp. 2 in Ozbayrak et al. (2019), herein described as Pratylenchus smoliki n. sp. The new species has been collected from two Great Plains States: Kansas and Nebraska. All positive collections were obtained from fields in a corn-soybean rotation. Notably P. smoliki n. sp. reproduces sexually and males make up approximately 30% of the adult population. The possibility that

Thomas Powers, Timothy Todd, Tim Harris, Rebecca Higgins, Ann MacGuidwin, Peter Mullin, Mehmet Ozbayrak, Kirsten Powers, Kanan Sakai

Journal of Nematology, Volume 53 , 1–23

research-article | 30-November-2018

A COI DNA barcoding survey of Pratylenchus species in the Great Plains Region of North America

alleni Ferris, 1961 was described from soybean fields in southeast Illinois (Ferris, 1961). Smolik and Lewis (1982) recorded P. tenuis and P. scribneri from the mixed shortgrass prairie ecosystems of western South Dakota. Corn has been frequently recorded as a host for lesion nematodes with P. scribneri, P. hexincisus, and P. tenuis reported in fields in South Dakota (Smolik, 1977; Smolik and Evenson, 1987) and P. agilis, P. alleni, P. flakkensis Seinhorst, 1968, P. hexincisus, P. neglectus, and P

Mehmet Ozbayrak, Tim Todd, Timothy Harris, Rebecca Higgins, Kirsten Powers, Peter Mullin, Lisa Sutton, Thomas Powers

Journal of Nematology, Volume 51 , 1–21

research-article | 30-November-2019

Intraspecific variation in phenotypic and phylogenetic features among Pratylenchus penetrans isolates from Wisconsin, USA

haplotypes. We recently surveyed Wisconsin for species of Pratylenchus with males to determine the prevalence of P. penetrans in crop rotations including soybean. That project (Saikai, 2019) resulted in first reports of P. fallax (Saikai et al., 2019) and P. alleni (Saikai and MacGuidwin, 2019) in Wisconsin, but also showed the vast majority of populations with Pratylenchus males to be P. penetrans based on sequence data from 28S rDNA, 18S rDNA, and a species-specific primer. Our objectives in this study

Kanan Saikai, Ann E. MacGuidwin

Journal of Nematology, Volume 52 , 1–17

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