您好，欢迎访问湖南省农业科学院 机构知识库！

Comparative study of vegetative and reproductive growth of different tea varieties response to different fluoride concentrations stress

文献类型： 外文期刊

作者： Yang, Peidi 1 ; Liu, Zhen 2 ; Zhao, Yang 2 ; Cheng, Yang 1 ; Li, Juan 1 ; Ning, Jing 2 ; Yang, Yang 2 ; Huang, Jian'an 1 ;

作者机构： 1.Hunan Agr Univ, Natl Res Ctr Engn Technol Utilizat Bot Funct Ingr, Collaborat Innovat Ctr Utilizat Funct Ingredients, Key Lab Tea Sci,Educ Minist, Changsha 410128, Peoples R China

2.Hunan Acad Agr Sci, Hunan Sub Ctr Natl Tea Improvement Ctr, Tea Res Inst, Changsha 410125, Peoples R China

关键词： Tea; Comparative transcriptomics analysis; Fluoride; Vegetative growth; Oxidation-reduction reaction

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： 2020 年 154 卷

页码：

收录情况： SCI

摘要： Background: The amount of fluoride accumulation in tea leaves was gradually increase as the matures of tea plants, and the excessive fluoride intake can threaten people's health. Based on years of field investigations, a low level of fluoride variety Xiangbo Lu (XBL) and a high level of fluoride variety Zhenong 139 (ZN139) were selected. Results: In this study, the root, 1st and the 5th leaf of the two-year-old tea trees were used for morphological, physiological and comparative transcriptomics analysis to understand the different features of "XBL" and "ZN139" under fluoride stress conditions. The color of the 1st and 5th leaves of XBL were yellower, the activity of peroxidase, catalase and antioxidant enzyme were lower than ZN139 under the high-fluoride stress. Transcriptomics analysis indicated that core genes involved in photosynthesis rates regulation showed no significantly exchanged expression, the co-downregulation of magnesium ions transportation, while the ROS scavenging, vegetative growth and self-compatibility between the two varieties were different. Crucial genes' expression were also identified by the real-time RT-PCR. Conclusion: The tea tree is one of the few plants that has a high-fluoride content, but the different varieties respond differently to fluoride stress. High-fluoride tea tree varieties, such as ZN139, have stronger ROS scavenging abilities through the use of both their non-enzymatic and enzymatic antioxidant systems which act by increasing the expression levels of inositol-1-monophosphatases and peroxidases, among others. ZN139 can also compensate for the decrease in photosynthetic rate that is associated with the ionic imbalance caused by the reduced consumption of light energy during long-periods of high fluoride stress. Reproductive development was protected in ZN139 by the up-regulated expression of S-locus glycoprotein, Mildew resistance locus o and Phospholipase D under fluoride stress, while the vegetative development of low-fluoride varieties such as XBL was retarded. More starch and cellulose were redistributed to glucose by increasing the expression levels of glycosyl transferases and hydrolases to provide more energy for processes involved in the response and tolerance towards fluoride stress.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：湖南省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台