Natural variation in SlSOS2 promoter hinders salt resistance during tomato domestication

被引：25

作者：

Hong, Yechun ^{[2
,3
]}

Guan, Xijin ^{[4
]}

Wang, Xu ^{[1
]}

Kong, Dali ^{[2
,3
]}

Yu, Shuojun ^{[1
]}

Wang, Zhiqiang ^{[1
]}

Yu, Yongdong ^{[2
,3
]}

Chao, Zhen-Fei ^{[2
,3
]}

Liu, Xue ^{[2
,3
]}

Huang, Sanwen ^{[2
,5
]}

Zhu, Jian-Kang ^{[3
,6
,7
]}

Zhu, Guangtao ^{[4
]}

Wang, Zhen ^{[1
,2
,3
]}

机构：

[1] Anhui Agr Univ, Sch Life Sci, Hefei 230036, Anhui, Peoples R China

[2] Chinese Acad Sci, Shanghai Ctr Plant Stress Biol, Shanghai 200032, Peoples R China

[3] Chinese Acad Sci, Ctr Excellence Mol Plant Sci, Shanghai 200032, Peoples R China

[4] Yunnan Normal Univ, AGISCAAS YNNU Joint Acad Potato Sci, Kunming 650500, Peoples R China

[5] Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Genome Anal Lab, Minist Agr, Shenzhen 518000, Peoples R China

[6] Southern Univ Sci & Technol, Inst Adv Biotechnol, Shenzhen 518055, Peoples R China

[7] Southern Univ Sci & Technol, Sch Life Sci, Shenzhen 518055, Peoples R China

来源：

HORTICULTURE RESEARCH | 2023年 / 10卷 / 01期

基金：

中国国家自然科学基金;

关键词：

PROTEIN-KINASE SOS2; ARABIDOPSIS; TOLERANCE; OVEREXPRESSION; EXPRESSION; RESPONSES; INSIGHTS; DROUGHT; PATHWAY; ABI4;

D O I：

10.1093/hr/uhac244

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

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.

引用

页数：8

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