Cloning and function analysis of a Saussurea involucrata LEA4 gene

文献类型： 外文期刊

第一作者： Kong, Hui

作者： Kong, Hui;Xia, Wenwen;Hou, Mengjuan;Ruan, Nan;Li, Jin;Zhu, Jianbo;Xia, Wenwen;Xia, Wenwen

作者机构：

关键词： Saussurea involucrate; SiLEA4; low temperature stress; transgenic; tomato; E; coli; photosynthesis; yield

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）

ISSN： 1664-462X

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Late embryogenesis abundant proteins (LEA) help adapt to adverse low-temperature environments. The Saussurea involucrate SiLEA4, which encodes a membrane protein, was significantly up-regulated in response to low temperature stress. Escherichia coli expressing SiLEA4 showed enhanced low-temperature tolerance, as evident from the significantly higher survival numbers and growth rates at low temperatures. Moreover, tomato strains expressing SiLEA4 had significantly greater freezing resistance, due to a significant increase in the antioxidase activities and proline content. Furthermore, they had higher yields due to higher water utilization and photosynthetic efficiency under the same water and fertilizer conditions. Thus, expressing SiLEA4 has multiple advantages: (1) mitigating chilling injury, (2) increasing yields, and (3) water-saving, which also indicates the great potential of the SiLEA4 for breeding applications.

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