The PPR-Domain Protein SOAR1 Regulates Salt Tolerance in Rice

文献类型： 外文期刊

第一作者： Lu, Kai

作者： Lu, Kai;Li, Cheng;Guan, Ju;Liang, Wen-Hua;Chen, Tao;Zhao, Qing-Yong;Zhu, Zhen;Yao, Shu;He, Lei;Wei, Xiao-Dong;Zhao, Ling;Zhou, Li-Hui;Zhao, Chun-Fang;Wang, Cai-Lin;Zhang, Ya-Dong

作者机构：

关键词： Salt stress; Rice; Pentatricopeptide repeat (PPR) protein; SOAR1; Alternative splicing

期刊名称：RICE （ 影响因子：5.638； 五年影响因子：6.097 ）

ISSN： 1939-8425

年卷期： 2022 年 15 卷 1 期

页码：

收录情况： SCI

摘要： Previous studies in Arabidopsis reported that the PPR protein SOAR1 plays critical roles in plant response to salt stress. In this study, we reported that expression of the Arabidopsis SOAR1 (AtSOAR1) in rice significantly enhanced salt tolerance at seedling growth stage and promoted grain productivity under salt stress without affecting plant productivity under non-stressful conditions. The transgenic rice lines expressing AtSOAR1 exhibited increased ABA sensitivity in ABA-induced inhibition of seedling growth, and showed altered transcription and splicing of numerous genes associated with salt stress, which may explain salt tolerance of the transgenic plants. Further, we overexpressed the homologous gene of SOAR1 in rice, OsSOAR1, and showed that transgenic plants overexpressing OsSOAR1 enhanced salt tolerance at seedling growth stage. Five salt- and other abiotic stress-induced SOAR1-like PPRs were also identified. These data showed that the SOAR1-like PPR proteins are positively involved in plant response to salt stress and may be used for crop improvement in rice under salinity conditions through transgenic manipulation.

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