文献类型： 外文期刊
作者： Dong, Junyang 1 ; Song, Yuqin 1 ; Wang, Baogen 2 ; Wu, Xiaohua 2 ; Wang, Ying 2 ; Wang, Jian 2 ; Lu, Zhongfu 2 ; Zhang, Yan 3 ; Li, Guojing 2 ; Wu, Xinyi 2 ; Wang, Huasen 1 ;
作者机构： 1.Zhejiang A&F Univ, Collaborat Innovat Ctr Efficient & Green Prod Agr, Key Lab Qual & Safety Control Subtrop Fruit & Veg, Minist Agr & Rural Affairs,Coll Hort Sci, Hangzhou 310021, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Vegetable, Hangzhou 310021, Peoples R China
3.Guangdong Acad Agr Sci, Inst Vegetable, Guangzhou 510640, Peoples R China
4.Zhejiang Acad Agr Sci, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China
关键词： cowpea; fusarium wilt; GWAS; candidate genes
期刊名称：APPLIED SCIENCES-BASEL （ 影响因子：2.838； 五年影响因子：2.921 ）
ISSN：
年卷期： 2022 年 12 卷 14 期
页码：
收录情况： SCI
摘要： Fusarium wilt (FW), caused by the soil-borne fungal pathogen Fusarium oxysporum f. sp. Tracheiphilum, is a serious threat to cowpea production worldwide. Understanding the genetic architecture of FW resistance is a prerequisite to combatting this disease and developing FW resistance varieties. In the current study, a genetic diversity panel of 99 cowpea accessions was collected, and they were infected by a single strain, FW-HZ. The disease index (DI) based on the two indicators of leaf damage (LFD) and vascular discoloration (VD) varied highly across the population: most accessions were susceptible, and only seven accessions showed resistant phenotypes by both indicators. Through a genome-wide association study (GWAS), 3 and 7 single nucleotide polymorphisms (SNPs) significantly associated with LFD and VD were detected, respectively, which were distributed on chromosomes 3, 4, 5, 6 and 9, accounting for 0.68-13.92% of phenotypic variation. Based on the cowpea reference genome, 30 putative genes were identified and proposed as the likely candidates, including leucine-rich repeat protein kinase family protein, protein kinase superfamily protein and zinc finger family protein. These results provide novel insights into the genetic architecture of FW resistance and a basis for molecular breeding of FW resistant cultivars in cowpea.
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