TSPO-induced degradation of the ethylene receptor RhETR3 promotes salt tolerance in rose (Rosa hybrida)
文献类型： 外文期刊
作者： Zhao, Qingcui 1 ; Jing, Weikun 1 ; Fu, Xijia 4 ; Yang, Ruoyun 4 ; Zhu, Chunyan 4 ; Zhao, Jiaxin 4 ; Choisy, Patrick 5 ; Xu, Tao 1 ; Ma, Nan 4 ; Zhao, Liangjun 4 ; Gao, Junping 4 ; Zhou, Xiaofeng 4 ; Li, Yonghong 1 ;
作者机构： 1.Shenzhen Polytech, Sch Food & Drug, Shenzhen 518055, Guangdong, Peoples R China
2.Shenzhen Polytech, Postdoctoral Innovat Practice Base, Shenzhen 518055, Guangdong, Peoples R China
3.Yunnan Acad Agr Sci, Flower Res Inst, Kunming 650205, Yunnan, Peoples R China
4.China Agr Univ, Dept Ornamental Hort, Beijing Key Lab Dev & Qual Control Ornamental Crop, Beijing 100193, Peoples R China
5.LVMH Rech, F-45800 St Jean De Braye, France
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： 2024 年 11 卷 4 期
页码：
收录情况： SCI
摘要： The gaseous plant hormone ethylene regulates plant development, growth, and responses to stress. In particular, ethylene affects tolerance to salinity; however, the underlying mechanisms of ethylene signaling and salt tolerance are not fully understood. Here, we demonstrate that salt stress induces the degradation of the ethylene receptor ETHYLENE RESPONSE 3 (RhETR3) in rose (Rosa hybrid). Furthermore, the TspO/MBR (Tryptophan-rich sensory protein/mitochondrial benzodiazepine receptor) domain-containing membrane protein RhTSPO interacted with RhETR3 to promote its degradation in response to salt stress. Salt tolerance is enhanced in RhETR3-silenced rose plants but decreased in RhTSPO-silenced plants. The improved salt tolerance of RhETR3-silenced rose plants is partly due to the increased expression of ACC SYNTHASE1 (ACS1) and ACS2, which results in an increase in ethylene production, leading to the activation of ETHYLENE RESPONSE FACTOR98 (RhERF98) expression and, ultimately accelerating H2O2 scavenging under salinity conditions. Additionally, overexpression of RhETR3 increased the salt sensitivity of rose plants. Co-overexpression with RhTSPO alleviated this sensitivity. Together, our findings suggest that RhETR3 degradation is a key intersection hub for the ethylene signalling-mediated regulation of salt stress.
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