%A LI Xiao-Xu, WANG Rui, ZHANG Li-Xia, SONG Ya-Meng, TIAN Xiao-Nan, GE Rong-Chao %T Cloning and functional identification of gene OsATS in rice %0 Journal Article %D 2021 %J Acta Agronomica Sinica %R 10.3724/SP.J.1006.2021.02079 %P 2045-2052 %V 47 %N 10 %U {https://zwxb.chinacrops.org/CN/abstract/article_7197.shtml} %8 2021-10-12 %X

The plant embryo specific protein ATS3 is closely related to osmotic stress response in plants. Here, the stress resistance related gene OsATS was preliminarily studied in rice. Fluorescence quantitative PCR showed that the relative expression level of OsATS increased significantly after salt stress in rice. The overexpression vector of OsATS was constructed and transformed into Arabidopsis thaliana. The stress resistance test revealed that the overexpression of OsATS gene could significantly improve the salt tolerance of Arabidopsis thaliana at germination and adult stages. After that, the overexpression vector p1300-35s:OSATS and RNA interference vector pTCK303-OsATS-RNAi were transferred into rice. The stress tolerance analysis indicated that the salt tolerance of OsATS overexpression rice lines significantly increased at germination stage and seedling stage, while the salt tolerance of OsATS RNAi rice lines significantly decreased. Results of qRT-PCR and physiological index detection demonstrated that the relative expression levels of OSATS gene might regulate the protein content of proline and LEA cells by regulating the expression of OsP5CS1, OsLEA3-1 and OsPDH, thus affecting the salt tolerance in rice. This study preliminarily revealed the stress resistance function of OSATS gene, which laid a foundation for improving rice stress resistance by adjusting the relative expression level of OSATS gene.