RGF Gene Family Analysis and Functional Evidence for RGF8-Mediated Salt Stress Tolerance in Brassica Species
文献类型： 外文期刊
作者： Wang, Shi-Wei 1 ; Zhang, Fan-Li 2 ; Jiao, Ru-Yu 3 ; Nie, Fan-Xuan 3 ; Zhu, Yi-Lin 2 ; Huang, Xi-Jin 2 ; Tan, Wen-Qing 2 ; Yang, Qian 2 ; Liu, Xin-Hong 2 ; Liu, Li-Li 4 ; Rong, Duo-Yan 6 ; Liu, Zhi-Xiang 1 ; Xie, Qi-Jun 5 ;
作者机构： 1.Cent South Univ Forestry & Technol, Coll Life & Enviromental Sci, Hunan Prov Key Lab Forestry Biotechnol, Changsha 410004, Peoples R China
2.Hunan Acad Agr Sci, Crop Res Inst, Hunan Res Ctr Heterosis Utilizat Rapeseed, Changsha 410125, Peoples R China
3.Hunan Univ, Coll Biol, Longping Branch, Changsha 410125, Peoples R China
4.Hunan Univ Sci & Technol, Sch Life & Hlth Sci, Hunan Key Lab Econ Crops Genet Improvement & Integ, Xiangtan 411201, Peoples R China
5.Yuelushan Lab, Hongqi Rd, Changsha 410125, Peoples R China
6.Hunan Univ Technol, Coll Life Sci & Chem, Hunan Prov Engn Res Ctr Lily Germplasm Resource In, Zhuzhou 412007, Peoples R China
关键词：
small peptide; salt stress; RGF8;
期刊名称：BIOLOGY-BASEL （ 影响因子：3.5； 五年影响因子：4.0 ）
ISSN：
年卷期： 2025 年 14 卷 3 期
页码：
收录情况： SCI
摘要： Brassica napus L. is a vital oil crop and exhibits notable salt tolerance, making the enhancement of this trait crucial for cultivation in saline soils. Uncovering its underlying mechanism may further heighten the salt tolerance of B. napus. In this study, we conducted a genome-wide analysis of the Root Meristem Growth Factor (RGF) gene family in Brassica species and identified BnaRGF8 as a key regulator of salt tolerance. Under 200 mM NaCl treatment, all RGF genes were induced, with BnaRGF8 showing the greatest upregulation. This response was consistently observed across 10 genotypes, indicating a universal trend in B. napus. Functional characterization revealed that chemically synthesized BnaRGF8 alleviated salt-induced growth inhibition by restoring primary root elongation and lateral root formation. Additionally, BnaRGF8 preserved membrane integrity and maintained cell division under salt stress, establishing itself as a novel anti-salt peptide in B. napus.
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