Identification of a Novel OsCYP2 Allele that Was Involved in Rice Response to Low Temperature Stress

文献类型： 外文期刊

第一作者： Gao, Hongxiu

作者： Gao, Hongxiu;Liu, Tianqi;Leng, Xueyu;Xie, Wei;Lv, Haitao;Jin, Zhengxun;Zhang, Zhongchen;Zhu, Lin;Zhu, Zhenxing;Wu, Ping

作者机构：

关键词： Rice; low temperature; OsCYP2; OsTPS38; OsCDPK7

期刊名称：PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：1.7； 五年影响因子：1.4 ）

ISSN： 0031-9457

年卷期： 2023 年 92 卷 6 期

页码：

收录情况： SCI

摘要： Cyclophilin (CYP) plays an important role in plant response to stress, and OsCYP2, one gene of cyclophlilin family, is involved in auxin signal transduction and stress signaling in rice. However, the mechanism that OsCYP2 is involved in rice response to low temperature is still unclear. We identified a new OsCYP2 allelic mutant, lrl3, with fewer lateral roots, and the differences in shoot height, primary root length and adventitious root length increased with the growth process compared to the wild-type plant. Auxin signaling pathway was also affected and became insensitive to gravity. The transgenic rice plants with over-expression of OsCYP2 were more tolerant to low temperature than the wild-type plants, suggesting that OsCYP2 was involved in the low temperature response in rice. In addition, OsCYP2 negatively regulated the expression of OsTPS38, a terpene synthase gene, and was dependent on the OsCDPK7-mediated pathway in response to low temperature stress. OsTPS38overexpressed transgenic line ox-2 was more sensitive to low temperature. Therefore, OsCYP2 may negatively regulate OsTPS38 through an OsCDPK7-dependent pathway to mediate the response to low temperature in rice. These results provide a new basis for auxin signaling genes to regulate rice response to low temperature stress.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序