Natural variation in SlSOS2 promoter hinders salt resistance during tomato domestication
文献类型: 外文期刊
第一作者: Wang, Xu
作者: Wang, Xu;Yu, Shuojun;Wang, Zhiqiang;Wang, Zhen;Hong, Yechun;Kong, Dali;Yu, Yongdong;Chao, Zhen-Fei;Liu, Xue;Huang, Sanwen;Wang, Zhen;Hong, Yechun;Kong, Dali;Yu, Yongdong;Chao, Zhen-Fei;Liu, Xue;Zhu, Jian-Kang;Wang, Zhen;Guan, Xijin;Zhu, Guangtao;Huang, Sanwen;Zhu, Jian-Kang;Zhu, Jian-Kang
作者机构:
期刊名称:HORTICULTURE RESEARCH ( 影响因子:8.7; 五年影响因子:9.0 )
ISSN: 2662-6810
年卷期: 2023 年 10 卷 1 期
页码:
收录情况: SCI
摘要: Increasing soil salinization seriously impairs plant growth and development, resulting in crop loss. The Salt-Overly-Sensitive (SOS) pathway is indispensable to the mitigation of Na (+) toxicity in plants under high salinity. However, whether natural variations of SOS2 contribute to salt tolerance has not been reported. Here a natural variation in the SlSOS2 promoter region was identified to be associated with root Na+/K+ ratio and the loss of salt resistance during tomato domestication. This natural variation contains an ABI4-binding cis-element and plays an important role in the repression of SlSOS2 expression. Genetic evidence revealed that SlSOS2 mutations increase root Na+/K+ ratio under salt stress conditions and thus attenuate salt resistance in tomato. Together, our findings uncovered a critical but previously unknown natural variation of SOS2 in salt resistance, which provides valuable natural resources for genetic breeding for salt resistance in cultivated tomatoes and other crops.
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