scholarly journals Molecular characterization of soybean resistance to soybean cyst nematode

2009 ◽  
Author(s):  
Xiaohong Liu
Keyword(s):  
Molecular Characterization ◽  
Soybean Cyst Nematode ◽  
Cyst Nematode ◽  
Soybean Resistance

Identification of novel haplotype of a cyst nematode resistance gene, GmSNAP18 in soybean [Glycine max (L.) Merr.]

2020 ◽  
Vol 80 (03) ◽  
Author(s):  
Ik-Young Choi ◽  
Prakash Basnet ◽  
Hana Yoo ◽  
Neha Samir Roy ◽  
Rahul Vasudeo Ramekar ◽  
...  
Keyword(s):  
Soybean Cyst Nematode ◽  
Gene Families ◽  
Nematode Resistance ◽  
Cyst Nematode ◽  
Soybean Breeding ◽  
Resistant Varieties ◽  
Soybean Genotypes ◽  
Glycine Max L ◽  
Scn Resistance

Soybean cyst nematode (SCN) is one of the most damaging pest of soybean. Discovery and characterization of the genes involved in SCN resistance are important in soybean breeding. Soluble NSF attachment protein (SNAP) genes are related to SCN resistance in soybean. SNAP genes include five gene families, and 2 haplotypes of exons 6 and 9 of SNAP18 are considered resistant to the SCN. In present study the haplotypes of GmSNAP18 were surveyed and chacterized in a total of 60 diverse soybean genotypes including Korean cultivars, landraces, and wild-types. The target region of exons 6 and 9 in GmSNAP18 region was amplified and sequenced to examine nucleotide variation. Characterization of 5 haplotypes identified in present study for the GmSNAP18 gene revealed two haplotypes as resistant, 1 as susceptible and two as novel. A total of twelve genotypes showed resistant haplotypes, and 45 cultivars were found susceptible. Interestingly, the two novel haplotypes were present in 3 soybean lines. The information provided here about the haplotypic variation of GmSNAP18 gene can be further explored for soybean breeding to develop resistant varieties.

scholarly journals Distinct Copy Number, Coding Sequence, and Locus Methylation Patterns Underlie Rhg1-Mediated Soybean Resistance to Soybean Cyst Nematode

2014 ◽  
Vol 165 (2) ◽  
pp. 630-647 ◽  
Author(s):  
David E. Cook ◽  
Adam M. Bayless ◽  
Kai Wang ◽  
Xiaoli Guo ◽  
Qijian Song ◽  
...  
Keyword(s):  
Copy Number ◽  
Soybean Cyst Nematode ◽  
Cyst Nematode ◽  
Coding Sequence ◽  
Soybean Resistance ◽  
Methylation Patterns

Characterization of Virulence Phenotypes of Soybean Cyst Nematode (Heterodera glycines) Populations in North Dakota

2021 ◽  
Author(s):  
Intiaz Amin Chowdhury ◽  
Guiping Yan ◽  
Addison Plaisance ◽  
sam markell
Keyword(s):  
North Dakota ◽  
Soybean Cyst Nematode ◽  
Heterodera Glycines ◽  
The United States ◽  
Cyst Nematode ◽  
Sources Of Resistance ◽  
Resistance Sources ◽  
First Time ◽  
Primary Strategy

Soybean cyst nematode (SCN; Heterodera glycines) continues to be the greatest threat to soybean production in the United States. Since host resistance is the primary strategy used to control SCN, knowledge of SCN virulence phenotypes (HG types) is necessary for choosing sources of resistance for SCN management. To characterize SCN virulence phenotypes in North Dakota (ND), a total of 419 soybean fields across 22 counties were sampled during 2015, 2016, and 2017. SCN was detected in 42% of the fields sampled and population densities in these samples ranged from 30 to 92,800 eggs and juveniles per 100 cm3 of soil. The SCN populations from some of the infested fields were virulence phenotyped with seven soybean indicator lines and a susceptible check (Barnes) using the HG type tests. Overall, 73 SCN field populations were successfully virulence phenotyped. The HG types detected in ND were HG type 0 (frequency rate: 36%), 7 (27%), 2.5.7 (19%), 5.7 (11%), 1.2.5.7 (4%), and 2.7 (2%). However, prior to this study only HG type 0 was detected in ND. The designation of each of the HG types detected was then validated in this study by repeating the HG type tests for thirty-three arbitrarily selected samples. This research for the first time reports several new HG types detected in ND and confirms that the virulence of SCN populations is shifting and overcoming resistance, highlighting the necessity of utilization of different resistance sources, rotation of resistance sources, and identification of novel resistance sources for SCN management in ND.

scholarly journals The Soybean Resistance Gene Rag1 Does Not Protect Against Soybean Cyst and Root-knot Nematodes

2009 ◽  
Vol 10 (1) ◽  
pp. 44
Author(s):  
Matthew Studham ◽  
Gustavo C. MacIntosh ◽  
Felicitas Avendaño ◽  
David Soh ◽  
Gregory L. Tylka
Keyword(s):  
Resistance Gene ◽  
Soybean Cyst Nematode ◽  
Soybean Aphid ◽  
Cyst Nematode ◽  
Root Knot Nematodes ◽  
Rag1 Gene ◽  
Tomato Gene ◽  
Soybean Resistance

The only well-characterized gene controlling soybean aphid (SBA) resistance is Mi-1.2, a tomato gene that also confers resistance to root-knot nematodes (RKN). Based on similarities between Mi-1.2 and Rag1, which produces a strong antibiosis-type resistance, the authors hypothesized that Rag1 could also provide resistance to nematodes. They evaluated two soybean lines, one carrying the Rag1 gene, and one with no resistance gene, for susceptibility or resistance to soybean cyst nematode (SCN) and RKN. Accepted for publication 4 March 2009. Published 1 April 2009.

scholarly journals Molecular characterization and functional analysis of two new lysozyme genes from soybean cyst nematode (Heterodera glycines)

2019 ◽  
Vol 18 (12) ◽  
pp. 2806-2813 ◽  
Author(s):  
Ning WANG ◽  
Huan PENG ◽  
Shi-ming LIU ◽  
Wen-kun HUANG ◽  
Ricardo Holgado ◽  
...  
Keyword(s):  
Functional Analysis ◽  
Molecular Characterization ◽  
Soybean Cyst Nematode ◽  
Heterodera Glycines ◽  
Cyst Nematode
Sign in / Sign up

Export Citation Format

Share Document