Dissection of major QTLs and candidate genes for seedling stage salt/drought tolerance in tomato
文献类型： 外文期刊
作者： Li, Xin 1 ; Liu, Xiyan 1 ; Pan, Feng 1 ; Hu, Junling 1 ; Han, Yunhao 1 ; Bi, Ripu 1 ; Zhang, Chen 1 ; Liu, Yan 2 ; Wang, Yong 2 ; Liang, Zengwen 3 ; Zhu, Can 1 ; Guo, Yanmei 1 ; Huang, Zejun 1 ; Wang, Xiaoxuan 1 ; Du, Yongchen 1 ; Liu, Lei 1 ; Li, Junming 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Vegetables & Flowers, State Key Lab Vegetable Biobreeding, Beijing 100081, Peoples R China
2.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot 010031, Peoples R China
3.Shandong Yongsheng Agr Dev Co Ltd, Weifang 262700, Shandong, Peoples R China
关键词： Tomato; Salt tolerance; Drought tolerance; QTL
期刊名称：BMC GENOMICS （ 影响因子：3.7； 五年影响因子：4.2 ）
ISSN： 1471-2164
年卷期： 2024 年 25 卷 1 期
页码：
收录情况： SCI
摘要： BackgroundAs two of the most impactful abiotic stresses, salt and drought strongly affect tomato growth and development, especially at the seedling stage. However, dissection of the genetic basis underlying salt/drought tolerance at seedling stage in tomato remains limited in scope.ResultsHere, we reported an analysis of major quantitative trait locus (QTL) and potential causal genetic variations in seedling stage salt/drought tolerance in recombinant inbred lines (n = 201) of S. pimpinellifolium and S. lycopersicum parents by whole genome resequencing. A total of 5 QTLs on chromosome 1, 3, 5, 7 and 12 for salt tolerance (ST) and 15 QTLs on chromosome 1, 3, 4, 8, 9, 10, 12 for drought tolerance (DT) were identified by linkage mapping. The proportion of phenotypic variation explained (PVE%) by these QTLs ranged from 4.91 to 15.86. Two major QTLs qST7 and qDT1-3 were detected in both two years, for which two candidate genes (methionine sulfoxide reductase SlMSRB1 and brassinosteroid insensitive 1-like receptor SlBRL1) and the potential functional variations were further analyzed. Taking advantage of the tomato population resequencing data, the frequency changes of the potential favorable QTL allele for seedling stage ST/DT during tomato breeding were explored.ConclusionsThese results will be beneficial for the exploration of salt/drought tolerance genes at seedling stages, laying a foundation for marker-assisted breeding for seedling stage salt/drought tolerance.
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