Discovery of two tightly linked soybean genes at the qSCN10 (O) locus conferring broad-spectrum resistance to soybean cyst nematode.

ABSTRACT: Soybean cyst nematode (SCN, Heterodera glycine Ichinohe) is a major threat to global soybean yield. Resistance genes at the rhg1 locus from PI 88788 are majorly utilized in 95% of the U.S. breeding programs. Continuous use of this resistance source leads to a shift in the virulence of SCN populations and overcomes host resistance. Therefore, it is necessary to identify alternative SCN resistance sources to combat this ever-changing pest. Previously, we identified an exotic soybean line, PI 567516C, which carries a novel qSCN10 (O) locus for SCN resistance demonstrating different resistance responses compared to the known rhg1 and Rhg4 loci. Here, we narrowed the qSCN10 QTL region to 142-kb (containing 20 genes). Based on gene expression, gene ontology, in-silico analysis, and QTL-based hap

SUBMITTER: Lakhssassi N 

PROVIDER: S-EPMC11836386 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature