Conjunctive Analysis of BSA-Seq and SSR Markers Unveil the Candidate Genes for Resistance to Rice False Smut
文献类型： 外文期刊
作者： Fu, Rongtao 1 ; Zhao, Liyu 1 ; Chen, Cheng 1 ; Wang, Jian 1 ; Lu, Daihua 1 ;
作者机构： 1.Sichuan Acad Agr Sci, Inst Plant Protect, Chengdu 610066, Peoples R China
2.Minist Agr, Key Lab Integrated Pest Management Crops Southwest, Chengdu 610066, Peoples R China
关键词： rice false smut; quantitative trait loci; bulk segregant analysis; SSR marker; NB-ARC
期刊名称：BIOMOLECULES （ 影响因子：5.5； 五年影响因子：5.8 ）
ISSN：
年卷期： 2024 年 14 卷 1 期
页码：
收录情况： SCI
摘要： Rice false smut (RFS) caused by the fungus Ustilaginoidea virens (Cook) leads to serious yield losses in rice. Identification of the gene or quantitative trait loci (QTLs) is crucial to resistance breeding and mitigation of RFS damage. In this study, we crossed a resistant variety, IR77298-14-1-2::IRGC117374-1, with a susceptible indica cultivar, 9311, and evaluated recombinant inbred lines in a greenhouse. The genetic analysis showed that the RFS resistance of IR77298-14-1-2::IRGC117374-1 was controlled by multiple recessive loci. We identified a novel QTL, qRFS12.01, for RFS resistance in IR77298-14-1-2::IRGC117374-1 by combining bulked segregant analysis with whole genome resequencing (BSA-seq) and simple sequence repeat (SSR) marker mapping approaches. The phenotypic effect of qRFS12.01 on RFS resistance reached 28.74%, suggesting that SSR markers linked to qRFS12.01 are valuable for marker-assisted breeding of RFS resistance in rice. The prediction of putative candidate genes within qRFS12.01 revealed five disease resistance proteins containing NB-ARC domains. In conclusion, our findings provide a new rice chromosome region carrying genes/QTLs for resistance to RFS.
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