Open AccessRecent insights into barley and Rhynchosporium commune interactions
Author(s) -
Zhang Xuechen,
Ovenden Ben,
Milgate Andrew
Publication year - 2020
Publication title -
molecular plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.945
H-Index - 103
eISSN - 1364-3703
pISSN - 1464-6722
DOI - 10.1111/mpp.12945
Subject(s) - hordeum vulgare , biology , introgression , quantitative trait locus , resistance (ecology) , cultivar , pathogen , plant disease resistance , virulence , genetics , microbiology and biotechnology , agronomy , gene , poaceae
Rhynchosporium commune is the causal pathogen of scald in barley ( Hordeum vulgare ), a foliar disease that can reduce yield by up to 40% in susceptible cultivars. R. commune is found worldwide in all temperate growing regions and is regarded as one of the most economically important barley pathogens. It is a polycyclic pathogen with the ability to rapidly evolve new virulent strains in response to resistance genes deployed in commercial cultivars. Hence, introgression and pyramiding of different loci for resistance (qualitative or quantitative) through marker‐assisted selection is an effective way to improve scald resistance in barley. This review summarizes all 148 resistance quantitative trait loci reported at the date of submission of this review and projects them onto the barley physical map, where it is clear many loci co‐locate on chromosomes 3H and 7H. We have summarized the major named resistance loci and reiterated the renaming of Rrs15 (CI8288) to Rrs17 . This review provides a comprehensive resource for future discovery and breeding efforts of qualitative and quantitative scald resistance loci.