S-nitrosylation of the zinc finger protein SRG1 regulates plant immunity.
S-nitrosylation of the zinc finger protein SRG1 regulates plant immunity.
复制标题
锌指蛋白 SRG1 的 S-亚硝基化可调节植物免疫。
DOI:
10.1038/s41467-018-06578-3
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发表时间:
2018-10-12
影响因子:
16.6
通讯作者:
Loake GJ
中科院分区:
文献类型:
--
作者:
Cui B;Pan Q;Clarke D;Villarreal MO;Umbreen S;Yuan B;Shan W;Jiang J;Loake GJ
Nitric oxide (NO) orchestrates a plethora of incongruent plant immune responses, including the reprograming of global gene expression. However, the cognate molecular mechanisms remain largely unknown. Here we show a zinc finger transcription factor (ZF-TF), SRG1, is a central target of NO bioactivity during plant immunity, where it functions as a positive regulator. NO accumulation promotes SRG1 expression and subsequently SRG1 occupies a repeated canonical sequence within target promoters. An EAR domain enables SRG1 to recruit the corepressor TOPLESS, suppressing target gene expression. Sustained NO synthesis drives SRG1 S-nitrosylation predominantly at Cys87, relieving both SRG1 DNA binding and transcriptional repression activity. Accordingly, mutation of Cys87 compromises NO-mediated control of SRG1-dependent transcriptional suppression. Thus, the SRG1-SNO formation may contribute to a negative feedback loop that attenuates the plant immune response. SRG1 Cys87 is evolutionary conserved and thus may be a target for redox regulation of ZF-TF function across phylogenetic kingdoms. Upon pathogen infection plants accumulate nitric oxide which subsequently regulates defence gene expression. Here, the authors show that S-nitrosylation of the zinc finger transcription factor SRG1 affects transcriptional suppression and contributes to activation of defence responses.
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影响因子:
64.8
作者:
Delledonne, M;Xia, YJ;Lamb, C
通讯作者:
Lamb, C
影响因子:
5.7
作者:
Berendji, D;Kolb-Bachofen, V;Kröncke, KD
通讯作者:
Kröncke, KD
影响因子:
--
作者:
Chiranand, Wiriya;McLeod, Ian;Gustin, Michael C.
通讯作者:
Gustin, Michael C.
影响因子:
16
作者:
Kadota, Yasuhiro;Sklenar, Jan;Zipfel, Cyril
通讯作者:
Zipfel, Cyril
DOI:
10.1111/tpj.12209
发表时间:
2013-08
期刊:
The Plant journal : for cell and molecular biology
影响因子:
--
作者:
Guo X;Hou X;Fang J;Wei P;Xu B;Chen M;Feng Y;Chu C
通讯作者:
Chu C