AtSIEK, an EXD1-like protein with KH domain, involves in salt stress response by interacting with FRY2/CPL1

文献类型： 外文期刊

第一作者： Zhang, Xiangxiang

作者： Zhang, Xiangxiang;Xie, Qinyu;Zhang, Juncheng;Cai, Maohong;Chen, Tao;Xiang, Lijun;Lei, Zhonghua;Huang, Qixiu

作者机构：

关键词： Abiotic stresses; AtSIEK; KH domain; FRY2; CPL1

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.2； 五年影响因子：7.8 ）

ISSN： 0141-8130

年卷期： 2023 年 233 卷

页码：

收录情况： SCI

摘要： Abiotic stress has great impacts on plant germination, growth and development and crop yield. Therefore, it is important to understand the molecular mechanism of plants response to abiotic stress. In this study, we identified a plant specific protein AtSIEK (stress-induced protein with EXD1-like domain and KH domain) response to salt stress. AtSIEK encodes a hnRNP K homology (KH) protein localized in nucleus. Amino acid sequences analysis found that SIEK protein is specific in plants, containing two domains with EXD1-like domain and KH domain, while SIEK homolog in animals only had EXD1-like domain without KH domain. Physiology experiments revealed that AtSIEK was significantly induced under salt stress and the siek mutant shows sensitive to salt stress, indicating that AtSIEK was a positive regulator in stress response. Further, molecular, biochemical, and genetic assays suggested that AtSIEK interacts with FRY2/CPL1, a known regulator in response to abiotic stress, and they function synergistically in response to salt stress. Taken together, these results shed new light on the regulation of plant adaption to abiotic stress, which deepen our understanding of the molecular mechanisms of abiotic stress regulation in plants.

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