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RING-type E3 ligase PROTEOLYSIS1 from Syntrichia caninervis targets ABI3 for degradation and modulates plant stress responses

文献类型： 外文期刊

作者： Zhang, Yigong 1 ; Wang, Chun 1 ; Huang, Mingqi 1 ; Xiao, Jiangyuan 1 ; Li, Xiaoshuang 2 ; Wang, Yanqin 3 ; Zhang, Daoyuan 2 ; Yang, Yang 4 ;

作者机构： 1.Xinjiang Univ, Coll Life Sci & Technol, Xinjiang Key Lab Biol Resources & Genet Engn, Urumqi 830017, Xinjiang, Peoples R China

2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Key Lab Conservat & Utilizat Plant Gene R, Urumqi 830011, Peoples R China

3.Tarim Univ, Coll Life Sci, Xinjiang Prod & Construct Crops Key Lab Protect &, Alaer 843300, Xinjiang, Peoples R China

4.Xinjiang Acad Agr Sci, Inst Microbiol Applicat, Urumqi 830000, Xinjiang, Peoples R China

关键词： E3 ubiquitin ligase; Bryophyte; PROTEOLYSIS1; Abiotic stress; Abscisic acid insensitive 3

期刊名称：ENVIRONMENTAL AND EXPERIMENTAL BOTANY （ 影响因子：4.5； 五年影响因子：5.2 ）

ISSN： 0098-8472

年卷期： 2024 年 226 卷

页码：

收录情况： SCI

摘要： Ubiquitin-mediated protein degradation is crucial for plants to respond to environmental stresses, with E3 ligases being particularly important in regulating responses to abiotic stresses. This study focused on the role of E3 ubiquitin ligase in osmotic stress response in desiccation-tolerant mosses. We identified PROTEOLYSIS1 (PRT1), a RING-type E3 ligase, in Syntrichia caninervis . Our in vivo and in vitro assays confirmed that ScPRT1 actively targets the abscisic acid-insensitive 3 (ABI3) protein for degradation. Overexpressing ScPRT1 in Arabidopsis and S. caninervis reduced their tolerance to salt and drought stresses. Transcriptome analysis showed that ScPRT1 overexpression downregulates ABI3 and suppresses genes in the ERFs and DREBs subfamilies, leading to impaired stress resistance. This research enhances our understanding of abiotic stress responses in bryophytes and highlights the significance of protein ubiquitination in these plants.

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