Genome-Wide Association Study on Root System Architecture and Identification of Candidate Genes in Wheat (Triticum aestivum L.)

文献类型： 外文期刊

第一作者： Ma, Jianhui

作者： Ma, Jianhui;Zhao, Dongyang;Tang, Xiaoxiao;Yuan, Meng;Zhang, Daijing;Xu, Mengyuan;Duan, Yingze;Ren, Haiyue;Jiang, Lina;Yuan, Meng;Zeng, Qingdong;Wu, Jianhui;Han, Dejun;Li, Tian

作者机构：

关键词： Triticum aestivum L; root system architecture; genome-wide association study; quantitative trait loci; candidate genes

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）

ISSN：

年卷期： 2022 年 23 卷 3 期

页码：

收录情况： SCI

摘要： The root tissues play important roles in water and nutrient acquisition, environmental adaptation, and plant development. In this study, a diversity panel of 388 wheat accessions was collected to investigate nine root system architecture (RSA) traits at the three-leaf stage under two growing environments: outdoor pot culture (OPC) and indoor pot culture (IPC). Phenotypic analysis revealed that root development was faster under OPC than that under IPC and a significant correlation was observed between the nine RSA traits. The 660K single-nucleotide polymorphism (SNP) chip was used for a genome-wide association study (GWAS). Significant SNPs with a threshold of -log(10) (p-value) >= 4 were considered. Thus, 36 quantitative trait loci (QTLs), including 13 QTL clusters that were associated with more than one trait, were detected, and 31 QTLs were first identified. The QTL clusters on chromosomes 3D and 5B were associated with four and five RSA traits, respectively. Two candidate genes, TraesCS2A01G516200 and TraesCS7B01G036900, were found to be associated with more than one RSA trait using haplotype analysis, and preferentially expressed in the root tissues. These favourable alleles for RSA traits identified in this study may be useful to optimise the root system in wheat.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序