PENNSTATE EXTENSION 21/07/21 Scout Now for Soybean Cyst Nematode (SCN): The Hidden Enemy. Photo credit: Adriana Murillo-Williams.
Penn State Extension Soybean growers in Pennsylvania must be aware that the soybean cyst nematode (SCN, Heterodera glycines) has been found in Lancaster and York counties. Not really concerned yet? As a reminder, SCN is the pathogen that causes the greatest yield losses in soybean in the United States. The nematode moves from field to field on anything that can move soil and infected roots: tractor tires, run off water, ag implements, humans and animals. In New York, the number of counties where at least one field has tested positive for SCN has steadily increased in the last 5 years, making Pennsylvania the last soybean-producing state where SCN is not considered widespread. It is simple. Figure 1. AGRONOMY 14/01/21 Weeds Hosting the Soybean Cyst Nematode (Heterodera glycines Ichinohe): Management Implications in Agroecological Systems.
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No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. Feature Papers represent the most advanced research with significant potential for high impact in the field. Feature Papers are submitted upon individual invitation or recommendation by the scientific editors and undergo peer review prior to publication. PLANT AND SOIL 25/08/20 Response of soybean cyst nematode (Heterodera glycines) and root-knot nematodes (Meloidogyne spp.) to gradients of pH and inorganic salts. UOGUELPH_CA 12/09/19 Thèse en ligne : Evaluating Seed Treatments for the Management of Soybean Cyst Nematode (Heterodera glycines Ichinohe) in Dry Bean (Phaseolus vulgaris L.)
UNIVERSITY OF MINNESOTA - Soybean cyst nematode management guide. Non-host years needed to reduce SCN populations The number of years of nonhost crops needed to effectively lower SCN population density depends on many factors including: Initial egg density Soil biotic and abiotic factors that affect nematode mortality.
In Minnesota, SCN survives well during winter. With high populations after a susceptible soybean, it may take as long as 5 years - depending on initial egg population density and soil environments - of non-host or poor-host crops to reduce the SCN population to a density (e.g., ~200 eggs/100cc of soil) that will not damage a susceptible variety (Figure 12). Some leguminous crops such as pea, sun hemp, and Illinois bundleflower are poor hosts that produce SCN hatch stimulants and are more effective in lowering SCN population density than monocots including corn and wheat. Use resistant varieties Egg counts between 200 and 10,000 eggs per 100cc soil. UNIVERSITE DE MONTREAL - 2018 - Mémoire en ligne : Impact de Heterodera glycines sur la réaction de défense du soya (Glycine max) et influence sur la gestion de Aphis glycines dans un contexte climatique actuel et futur.
ULAVAL_CA - 2019 - Mémoire en ligne : Interaction entre le nématode à kyste (Heterodera glycines) et Phytophthora sojae chez le soya. Ulaval_ca - 2019 - Mémoire en ligne : Développement d'outils de sélection génomique assistée par marqueurs pour la lutte au nématode à kyste du soja. SCIENTIFIC REPORTS 06/02/18 Novel global effector mining from the transcriptome of early life stages of the soybean cyst nematode Heterodera glycines. 1.Allen, T.
W. et al. Soybean yield loss estimates due to diseases in the United States and Ontario, Canada, from 2010 to 2014. Plant Health Prog. 18, 19–27 (2017). Google Scholar 2.Mitchum, M. G. et al. PLOS 16/07/20 Genome-wide association study and genomic selection for tolerance of soybean biomass to soybean cyst nematode infestation. Abstract Soybean cyst nematode (SCN), Heterodera glycines Ichinohe, is one of the most devastating pathogens affecting soybean production in the U.S. and worldwide.
The use of SCN-resistant soybean cultivars is one of the most affordable strategies to cope with SCN infestation. Because of the limited sources of SCN resistance and changes in SCN virulence phenotypes, host resistance in current cultivars has increasingly been overcome by the pathogen. Host tolerance has been recognized as an additional tool to manage the SCN. The objectives of this study were to conduct a genome-wide association study (GWAS), to identify single nucleotide polymorphism (SNP) markers, and to perform a genomic selection (GS) study for SCN tolerance in soybean based on reduction in biomass. Citation: Ravelombola WS, Qin J, Shi A, Nice L, Bao Y, Lorenz A, et al. (2020) Genome-wide association study and genomic selection for tolerance of soybean biomass to soybean cyst nematode infestation. Pesq. agropec. bras. [online]. 2001, vol.36, n.2, Molecular characterization of soybean cyst nematode populations with different parasitism index to the Hartwig cultivar.
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MICHIGAN STATE UNIVERSITY - 2003 - Thèse en ligne : Characterization of the spatial distribution of Heterodera glycines Ichinohe 1955 (Nematoda), soybean cyst nematode in two Michigan fields. INTECH - NOV 2011 - Soybean Cyst Nematode (Heterodera glycines Ichinohe) IFOIANO_edu_br - SEPT 2019 - Dissertation en ligne : Biological products in Heterodera glycines management in soy culture. FRONT. PLANT SCI. 10/04/19 Genome-Wide Association Analysis Pinpoints Additional Major Genomic Regions Conferring Resistance to Soybean Cyst Nematode (Heterodera glycines Ichinohe) Introduction Soybean [Glycine max (L.)
Merrill] is the most important economic crop in the legume family for both oil and food products. Currently, soybean is the second most grown crop in the U.S. behind only maize, totaling 33.8 million hectares planted annually, and grossing $40 billion in 2016 in the U.S. (ASA, 2018). However, soybean production in the U.S. is strongly undermined by SCN, a pest that caused yield losses of ∼3.4 million tons in 2014. Virulence of SCN is variable with 16 possible races determined by four selected differential lines, including PI 548402 (hereafter referred to as Peking), Pickett, PI 88788 and PI 90763 (Riggs and Schmitt, 1988).
Breeding SCN resistant cultivars and rotation with non-host crops are the most effective control methods for SCN (Kim et al., 2016). The inheritance of SCN resistance is complex. Fitopatol. bras. [online]. 2002, vol.27, Detection of infested areas with Heterodera glycines in a soybean field using spectroradiometry in the visible and near infrared . Services on Demand Journal Article Indicators Related links Share.
APS 06/07/20 Impact of Arbuscular Mycorrhizal Species on Heterodera glycines. Soybean cyst nematode (SCN, Heterodera glycines) is a widely occurring pest and the leading cause of soybean yield losses in the U.S.A.
There is a need to find additional SCN management strategies as sources of SCN resistance have become less effective in managing SCN populations. Arbuscular mycorrhizal fungi (AMF) form symbiotic relationships with roots of most plants including soybean. Research has shown that AMF can reduce disease severity in plants caused by pathogens and pests, including plant parasitic nematodes. The goal of this study was to evaluate the impact of AMF on SCN cyst production, SCN juveniles in roots, and SCN egg hatching. In one experiment, all five AMF species tested (Claroideoglomus claroideum, Diversispora eburnean, Dentiscutata heterogama, Funneliformis mosseae, and Rhizophagus intraradices) reduced (P < 0.05) the number of cysts on soybean roots by 59 to 81%, compared with soybean roots not inoculated with AMF.
AGRICULTURE_COM 11/05/19 Soybean Cyst Nematode Spreads in 2019. Soggy weather in soybean fields in 2019 did not slow the spread of soybean cyst nematode (SCN).
In fact, floodwaters likely moved SCN to new areas, says Greg Tylka, nematologist at Iowa State University and leader of The SCN Coalition. “That’s one reason we’re recommending soil sampling for SCN during fall fertility testing.” It’s not just flooding that’s responsible for SCN’s expanding range. Agricultural and Forest Meteorology Volume 264, 15 January 2019, Simulating the impacts of climate change on soybean cyst nematode and the distribution of soybean.
BIORXIV 13/08/18 The genome of the soybean cyst nematode (Heterodera glycines) reveals complex patterns of duplications involved in the evolution of parasitism genes. UNIVERSITY OF MISSOURI - MAI 2017 - Dissertation en ligne : GENETIC AND MOLECULAR ANALYSIS OF SOYBEAN CYST NEMATODE VIRULENCE. AGFAX 05/06/18 Illinois: Soybean Cyst Nematodes – Race Shifts, Cover Crops as Alternative Controls. Among the various soybean pests, Heterodera glycines Ichinohe, known by most as soybean cyst nematode (SCN), continues to be a persistent cause of yield loss for soybean producers. SCN has been found in every county in Illinois, as well as much of the eastern United States, Puerto Rico, and parts of Hawaii and Canada (Figure 1). It is widely understood that the recommended control measures for this pest include rotation to non-host crops, often corn in this part of the country, and use of resistant varieties.
However, what is not generally understood is the importance of rotating the source of the resistance genes introgressed into those resistant varieties. If a given field is planted year after year with soybeans that derive their SCN resistance from the same source (i.e. PI 88788), even if it is in a rotation with a non-host crop, a “race shift” in the SCN population may occur. The term “race shift” is derived from the terminology used to describe and differentiate SCN populations.
Nématode à kyste du soja et résistance. PLANT HEALTH PROGRESS 03/03/16 Distribution and Abundance of Heterodera glycines and Macrophomina phaseolina in Ohio. PLANT DISEASE - NOV 2016 - Determination of Heterodera glycines Virulence Phenotypes Occurring in South Dakota. APS - JANV 2016 - First Report of Soybean Cyst Nematode (Heterodera glycines) on Soybean from Gansu and Ningxia China. Connexion Recherche avancée Scholar Recherche avancée Articles contenant ex. : "P Flajolet" ou J Fauvet ex. : Journal de la Société de biologie ou Revue Romane ex. : 1996 Scholar.
APS 31/08/17 First Report of the Soybean Cyst Nematode, Heterodera glycines, in New York. CABI 22/06/17 Heterodera glycines (soybean cyst nematode) Datasheet Don't need the entire report? Generate a print friendly version containing only the sections you need. PLOS 03/08/17 Management of the soybean cyst nematode Heterodera glycines with combinations of different rhizobacterial strains on soybean. Abstract Soybean cyst nematode (SCN) is the most damaging soybean pest worldwide.
To improve soybean resistance to SCN, we employed a soybean seed-coating strategy through combination of three rhizobacterial strains, including Bacillus simple, B. megaterium and Sinarhizobium fredii at various ratios. We found seed coating by such rhizobacterial strains at a ratio of 3:1:1 (thereafter called SN101) produced the highest germination rate and the mortality of J2 of nematodes. Then, the role of soybean seed coating by SN101 in nematode control was evaluated under both greenhouse and two field conditions in Northeast China in 2013 and 2014.
Our results showed that SN101 treatment greatly reduced SCN reproduction and significantly promoted plant growth and yield production in both greenhouse and field trials, suggesting that SN101 is a promising seed-coating agent that may be used as an alternative bio-nematicide for controlling SCN in soybean fields. Copyright: © 2017 Zhou et al. Results. PLOS 13/07/17 Biological control of Heterodera glycines by spore-forming plant growth-promoting rhizobacteria (PGPR) on soybean. Abstract Heterodera glycines, the soybean cyst nematode, is the most economically important plant-parasitic nematode on soybean production in the U.S. The objectives of this study were to evaluate the potential of plant growth-promoting rhizobacteria (PGPR) strains for mortality of H. glycines J2 in vitro and for reducing nematode population density on soybean in greenhouse, microplot, and field trials. The major group causing mortality to H. glycines in vitro was the genus Bacillus that consisted of 92.6% of the total 663 PGPR strains evaluated.
The subsequent greenhouse, microplot, and field trials indicated that B. velezensis strain Bve2 consistently reduced H. glycines cyst population density at 60 DAP. Bacillus mojavensis strain Bmo3 suppressed H. glycines cyst and total H. glycines population density under greenhouse conditions. Editor: Baohong Zhang, East Carolina University, UNITED STATES Received: February 22, 2017; Accepted: June 27, 2017; Published: July 13, 2017. GENET. MOL. RES. 28/07/17 Soybean genotype analysis for cyst nematode resistance. Front Plant Sci. 2016 Aug 17;7:1214. Genome-Wide Association Study of Resistance to Soybean Cyst Nematode (Heterodera glycines) HG Type 2.5.7 in Wild Soybean (Glycine soja).
Genetics and Molecular Research 15 (1):2016 Selecting soybean resistant to the cyst nematode Heterodera glycines using simple sequence repeat (microssatellite) markers. PLANT MANAGEMENT NETWORK 13/11/13 How to Pick a Soybean Variety When Soybean Cyst Nematode Is Present. How to Pick a Soybean Variety When Soybean Cyst Nematode Is Present Knoxville, Tennessee (November 13, 2013)--Soybean cyst nematode (SCN) is found generally wherever soybeans are grown. It is one of the most consistent yield-limiting pests in soybean production. Improved soybean varieties however, often mask the symptoms of stunted chlorotic plants described when this pest was first found.
Lack of above-ground symptoms does not mean that damage in the form of yield loss is not present. Often slight yield loss can occur each year as the population builds under favorable conditions. Surveys of Tennessee soybean fields for the presence of SCN have been ongoing for more than the last 10 years, supported in part through funding by the Tennessee Soybean Promotion Board.
In addition to collecting soil samples, we have been characterizing the SCN populations from these fields when the SCN level is high enough to allow testing. Phytopathology. 2016 Sep 6: Soybean Resistance to the Soybean Cyst Nematode Heterodera glycines: An Update. IOWA STATE UNIVERSITY - 2014 - Thèse en ligne : Influence of Heterodera glycines infection, plant age and water availability on foliar symptoms of sudden death syndrome, root symptom severity and root morphology of soybean plants infected by Fusarium virg.
INVASIVESPECIESINFO 28/07/16 Soybean Cyst Nematode. Partnership. UNIVERSITY OF NEBRASKA-LINCOLN 14/06/13 Market Journal Spotlights Research on Soybean Cyst Nematode. June 14, 2013. PLANT HEALTH PROGRESS - 2014 - Distribution of the Soybean Cyst Nematode, Heterodera glycines, in the United States and Canada: USDA - profile : Soybean Cyst Nematode. UNIVERSITÉ DE SHERBROOKE - SEPT 2013 - Essai en ligne : E NÉMATODE À KYSTE DU SOJA (HETERODERA GLYCINES) : ENJEUX DES CHANGEMENT. APS JOURNAL - MARS 2014 - First Report of Soybean Cyst Nematode (Heterodera glycines Ichinohe) on Soybean in the Province of Que.
Journal of Nematology 44(3):284–290. 2012. Development of PrimeTime-Real-Time PCR for Species Identification of Soybean Cyst Nem. UNIVERSITY OF KENTUCKY – FEV 2013 - 2013-2014 Soybean Cyst Nematode (SCN) Management Recommendations for Kentucky. Genetic Resources and Crop Evolution March 2013, Volume 60, Issue 3, pp 985-994, Novel sources of resistance to the soybean cyst. OHIO STATE UNIVERSITY - 2012 - Soybean Cyst nematode. SOUTHEAST FARM PRESS 26/04/13 Soybean cyst nematode may be reason for ‘yield ceiling’ in Kentucky. University of Missouri 11/03/13 Soybean Cyst Nematode Management in 2013. NATURE 13/12/12 A soybean cyst nematode resistance gene points to a new mechanism of plant resistance to pathogens.
INTECH 13/02/13 Soybean - Pest Resistance - Au sommaire: Nutritional Requirements of Soybean Cyst Nematodes. Edited by Hany A. El-Shemy, ISBN 978-953-51-0978-5, 280 pages, Publisher: InTech, Chapters published February 13, 2013 under CC BY 3.0 licenseDOI: 10.5772/3384 Legumes are important for the diet of a significant part of the world's population; they are a good source of protein, carbohydrates, minerals and vitamins. The'importance of soybean'lies in the overall agriculture and trade and in its contribution to food supply. Soybean contains the highest protein content and has no cholesterol in comparison with conventional legume and animal food sources. Furthermore, soybean is a cheap source of food, and at the same time medicinal due to its genistein, photochemical, isoflavones content. The Iowa Cooperative Extension Service - 1995 - Plant Pathology: Soybean Cyst Nematode.
Université de McGill - LES PLANTES NÉMATICIDES. EAP Publications | Virtual Library | Magazine Rack | Search | What's new Ecological Solutions Roundtable. OEPP - Heterodera glycines. ACIA - - Nématode à kyste du soja. INTECH - NOV 2011 - Future Biological Control for Soybean Cyst Nematode.