The regulatory effects of MeTCP4 on cold stress tolerance in Arabidopsis thaliana: A transcriptome analysis
文献类型： 外文期刊
作者： Cheng, Zhihao 2 ; Lei, Ning 3 ; Li, Shuxia 1 ; Liao, Wenbin 1 ; Shen, Jie 3 ; Peng, Ming 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Haikou 571101, Hainan, Peoples R China
2.Chinese Acad Trop Agr Sci, Haikou Expt Stn, Haikou 570102, Hainan, Peoples R China
3.Hainan Univ, Inst Trop Agr & Forestry, Haikou 570228, Hainan, Peoples R China
关键词： Cold stress; MeTCP4; Cassava; Arabidopsis; RNA-Seq
期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）
ISSN： 0981-9428
年卷期： 2019 年 138 卷
页码：
收录情况： SCI
摘要： Cassava (Manihot esculenta), an important food crop in tropical areas, is well-adapted to drought conditions, but is sensitive to cold. The expression of MeTCP4, a transcription factor involved in the regulation of plant development and abiotic stresses responses, was altered under cold stress. However, its biological function under abiotic stress responses is still unclear. Here, we show that increased MeTCP4 expression enhances cold stress tolerance in Arabidopsis (Arabidopsis thaliana). To better understand the biological role of MeTCP4, the mRNA from overexpression and wild-type (WT) plants was isolated for whole genome sequencing to identify MeTCP4-mediated cold-responsive genes. Our results identify 1341 and 797 differentially expressed genes (DEGs) affected by MeTCP4 overexpression under normal and cold conditions, respectively. Gene ontology analysis revealed that a portion of the DEGs were involved in reactive oxygen species (ROS) metabolism process after cold treatment. qRT-PCR analysis revealed that the expression of cold-responsive genes and ROS-scavenging-related genes were increased in MeTCP4 overexpression plant, which could be responsible for the reduced ROS levels and enhanced cold resistance observed in transgenic plant. The findings provide insight into mechanisms of MeTCP4-mediated cold stress response, and provide clues for development of low temperature-tolerant cassava cultivars.
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