文献类型： 外文期刊
作者： Wang, Chaofan 1 ; Li, Xiaoming 1 ; Zhuang, Yongbin 1 ; Sun, Wancai 1 ; Cao, Hongxiang 1 ; Xu, Ran 2 ; Kong, Fanjiang 3 ; Zhang, Dajian 1 ;
作者机构： 1.Shandong Agr Univ, Coll Agron, Tai An 271018, Shandong, Peoples R China
2.Shandong Acad Agr Sci, Crop Res Inst, Jinan 250131, Shandong, Peoples R China
3.Guangzhou Univ, Innovat Ctr Mol Genet & Evolut, Sch Life Sci, Guangdong Prov Key Lab Plant Adaptat & Mol Design, Guangzhou 510006, Peoples R China
关键词： artificial selection; GmARF16; proline; salt stress; soybean
期刊名称：NEW PHYTOLOGIST （ 影响因子：9.4； 五年影响因子：10.5 ）
ISSN： 0028-646X
年卷期： 2024 年 241 卷 5 期
页码：
收录情况： SCI
摘要： center dot Salt stress is a major challenge that has a negative impact on soybean growth and productivity. Therefore, it is important to understand the regulatory mechanism of salt response to ensure soybean yield under such conditions.center dot In this study, we identified and characterized a miR160a-GmARF16-GmMYC2 module and its regulation during the salt-stress response in soybean.center dot miR160a promotes salt tolerance by cleaving GmARF16 transcripts, members of the Auxin Response Factor (ARF) family, which negatively regulates salt tolerance. In turn, GmARF16 activates GmMYC2, encoding a bHLH transcription factor that reduces salinity tolerance by down-regulating proline biosynthesis. Genomic analysis among wild and cultivated soybean accessions identified four distinct GmARF16 haplotypes. Among them, the GmARF16(H3) haplotype is preferentially enriched in localities with relatively saline soils, suggesting GmARF16(H3) was artificially selected to improve salt tolerance.center dot Our findings therefore provide insights into the molecular mechanisms underlying salt response in soybean and provide valuable genetic targets for the molecular breeding of salt tolerance.
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