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Recent insights into barley and Rhynchosporium commune interactions.
Molecular Plant Pathology ( IF 4.8 ) Pub Date : 2020-06-14 , DOI: 10.1111/mpp.12945
Xuechen Zhang 1 , Ben Ovenden 1 , Andrew Milgate 1
Affiliation  

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.

中文翻译:


关于大麦和Rhynchosporium 公社相互作用的最新见解。



Rhynchosporium commune是大麦 ( Hordeum vulgare ) 的致病病原体,这是一种叶部疾病,可使敏感品种的产量减少高达 40%。 R. commune在全世界所有温带种植区都有发现,被认为是经济上最重要的大麦病原体之一。它是一种多环病原体,能够响应商业品种中部署的抗性基因而快速进化出新的毒力菌株。因此,通过标记辅助选择对不同抗性位点(定性或定量)进行渗入和金字塔化是提高大麦抗烫伤性的有效方法。本综述总结了截至本综述提交之日报告的所有 148 个抗性数量性状基因座,并将它们投影到大麦物理图上,其中很明显许多基因座共位于 3H 和 7H 染色体上。我们总结了主要的命名抗性位点,并重申将Rrs15 (CI8288) 更名为Rrs17 。本综述为未来定性和定量抗烫伤基因座的发现和育种工作提供了全面的资源。
更新日期:2020-06-14
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