Development and validation of breeder-friendly KASPar markers for er1, a powdery mildew resistance gene in pea (Pisum sativum L.)

文献类型： 外文期刊

第一作者： Ma, Yu

作者： Ma, Yu;Main, Dorrie;Coyne, Clarice J.;Pavan, Stefano;Sun, Suli;Zhu, Zhendong;Zong, Xuxiao;Leitao, Jose;McGee, Rebecca J.

作者机构：

关键词： er1;KASPar assay;Marker-assisted breeding;Powdery mildew;Pisum sativum

期刊名称：MOLECULAR BREEDING （ 影响因子：2.589； 五年影响因子：2.75 ）

ISSN： 1380-3743

年卷期： 2017 年 37 卷 12 期

页码：

收录情况： SCI

摘要： Powdery mildew of pea is caused by Erysiphe pisi DC and is a serious threat to pea (Pisum sativum L.) production throughout much of the world. Development and utilization of genetic resistance to powdery mildew is considered an effective and sustainable strategy to manage this disease. One gene, er1, conferring powdery mildew resistance, was previously cloned and sequenced, and the functional markers for each resistance allele were reported. Allele-specific DNA markers are efficient and powerful tools to facilitate crop improvement and new cultivar development in breeding programs. However, extensive application of these markers is limited by gel-associated obstacles. In this study, eight breeder-friendly kompetitive allele-specific PCR (KASPar) markers were developed to overcome the problems of gel-based markers and increase the efficiency of genotypic screening. In order to identify additional pea germplasm with powdery mildew resistance, these KASPar markers were deployed and used to genotype a pea collection derived from the USDA pea single-plant (PSP) collection. Simultaneously, a phenotypic screening and a genotypic validation using the corresponding gel-based functional markers were conducted on the PSP collection. One pea accession, PI 142775, was identified by both phenotyping and genotyping to carry the allele er1-1 for powdery mildew resistance, indicating that the KASPar assay is an efficient and robust tool for breeding for powdery mildew resistance.

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