Genome-wise association study identified genomic regions associated with drought tolerance in mungbean (Vigna radiata (L.) R. Wilczek)

文献类型： 外文期刊

第一作者： Chang, Yujie

作者： Chang, Yujie;Wang, Shumin;Wang, Lanfen;Wu, Jing;Peng, Lin;Ji, Liang

作者机构：

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.4； 五年影响因子：5.7 ）

ISSN： 0040-5752

年卷期： 2023 年 136 卷 3 期

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收录情况： SCI

摘要： Key messageA total of 282 mungbean accessions were resequenced to identify genome-wide variants and construct a highly precise variant map, and drought tolerance-related loci and superior alleles were identified by GWAS.Mungbean (Vigna radiata (L.) R. Wilczek) is an important food legume crop that is highly adapted to drought environments, but severe drought significantly curtails mungbean production. Here, we resequenced 282 mungbean accessions to identify genome-wide variants and constructed a highly precise map of mungbean variants. A genome-wide association study was performed to identify genomic regions for 14 drought tolerance-related traits in plants grown under stress and well-watered conditions over three years. One hundred forty-six SNPs associated with drought tolerance were detected, and 26 candidate loci associated with more than two traits were subsequently selected. Two hundred fifteen candidate genes were identified at these loci, including eleven transcription factor genes, seven protein kinase genes and other protein coding genes that may respond to drought stress. Furthermore, we identified superior alleles that were associated with drought tolerance and positively selected during the breeding process. These results provide valuable genomic resources for molecular breeding and will accelerate future efforts aimed at mungbean improvement.

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