The PPR-Domain Protein SOAR1 Regulates Salt Tolerance in Rice

Rice

Research

Xiao-Dong Wei¹  Chun-Fang Zhao¹  Wen-Hua Liang¹  Lei He¹  Qing-Yong Zhao¹  Ling Zhao¹  Li-Hui Zhou¹  Ju Guan¹  Shu Yao¹  Cheng Li¹  Cai-Lin Wang¹  Zhen Zhu¹  Tao Chen¹  Kai Lu¹  Ya-Dong Zhang¹ 

[1] Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, National Center of Technology Innovation for Saline-Alkali Tolerant Rice, Jiangsu High Quality Rice Research and Development Center, Nanjing Branch of China National Center for Rice Improvement, 210014, Nanjing, China;

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

DOI  :  10.1186/s12284-022-00608-x

 received in 2022-08-30, accepted in 2022-11-27,  发布年份 2022

来源: Springer

【 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.

【 授权许可】

CC BY   
© The Author(s) 2022

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