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全基因组关联研究揭示了水稻根系相关性状的候选基因。

Genome-Wide Association Study Reveals Candidate Genes for Root-Related Traits in Rice.

作者信息

Xiang Jun, Zhang Chaopu, Wang Nansheng, Liang Zhaojie, Zhenzhen Zheng, Liang Lunping, Yuan Hongyan, Shi Yingyao

机构信息

College of Agronomy, Anhui Agricultural University, Hefei 230000, China.

出版信息

Curr Issues Mol Biol. 2022 Sep 21;44(10):4386-4405. doi: 10.3390/cimb44100301.

DOI:10.3390/cimb44100301
PMID:36286016
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9601093/
Abstract

Root architecture is a determinant factor of drought resistance in rice and plays essential roles in the absorption of water and nutrients for the survival of rice plants. Dissection of the genetic basis for root structure can help to improve stress-resistance and grain yield in rice breeding. In this study, a total of 391 rice ( L.) accessions were used to perform a genome-wide association study (GWAS) on three root-related traits in rice, including main root length (MRL), average root length (ARL), and total root number (TRN). As a result, 13 quantitative trait loci (QTLs) (, , , , , , , , , , , , and ) significantly associated with the three traits were identified, among which three (, and were overlapped with , and , respectively, and ten were novel QTLs. Moreover, we also detected epistatic interactions affecting root-related traits and identified 19 related genetic interactions. These results lay a foundation for cloning the corresponding genes for rice root structure, as well as provide important genomic resources for breeding high yield rice varieties.

摘要

根系结构是水稻抗旱性的一个决定性因素，在水稻植株吸收水分和养分以维持生存方面起着至关重要的作用。剖析根系结构的遗传基础有助于在水稻育种中提高抗逆性和籽粒产量。在本研究中，共使用391份水稻（Oryza sativa L.）种质对水稻三个根系相关性状进行全基因组关联研究（GWAS），这三个性状包括主根长度（MRL）、平均根长度（ARL）和总根数（TRN）。结果，鉴定出13个与这三个性状显著相关的数量性状位点（QTLs）（qMRL1.1、qMRL1.2、qMRL2.1、qMRL3.1、qMRL6.1、qMRL7.1、qMRL8.1、qARL1.1、qARL2.1、qARL3.1、qARLTH1.1、qTRN1.1和qTRN2.1），其中三个（qMRL1.1、qMRL2.1和qMRL3.1）分别与qARL1.1、qARL2.1和qARL3.1重叠，另外十个是新的QTLs。此外，我们还检测到影响根系相关性状的上位性互作，并鉴定出19个相关的遗传互作。这些结果为克隆水稻根系结构的相应基因奠定了基础，同时也为培育高产水稻品种提供了重要的基因组资源。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/9833a6ff23cd/cimb-44-00301-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/451963493af7/cimb-44-00301-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/81ab41993ab2/cimb-44-00301-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/4640c1215820/cimb-44-00301-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/d8cc4573510c/cimb-44-00301-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/9aee55a8aca5/cimb-44-00301-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/9833a6ff23cd/cimb-44-00301-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/451963493af7/cimb-44-00301-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/81ab41993ab2/cimb-44-00301-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/4640c1215820/cimb-44-00301-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/d8cc4573510c/cimb-44-00301-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/9aee55a8aca5/cimb-44-00301-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/683c/9601093/9833a6ff23cd/cimb-44-00301-g006.jpg

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