Physiological attributes and transcriptomics analyses reveal the mechanism response of Helictotrichon virescens to low temperature stress
文献类型： 外文期刊
作者： Cheng, Mingjun 1 ; Cui, Kuoshu 3 ; Zheng, Mingmin 4 ; Yang, Tao 5 ; Zheng, Junjun 5 ; Li, Xiaofeng 5 ; Luo, Xuan 6 ; Zhou, Yang 5 ; Zhang, Ruizhen 2 ; Yan, Donghai 2 ; Yao, Mingjiu 2 ; Iqbal, Muhammad Zafar 5 ; Zhou, Qingping 1 ; He, Ruyu 5 ;
作者机构： 1.Southwest Minzu Univ, Inst Qinghai Tibetan Plateau, Chengdu 610041, Peoples R China
2.Sichuan Grass Ind Technol Res & Promot Ctr, Chengdu 610041, Peoples R China
3.Sichuan Agr Technol Extens Stn, Chengdu 610041, Peoples R China
4.Chengdu Normal Univ, Coll Chem & Life Sci, Chengdu 611130, Peoples R China
5.Sichuan Agr Univ, Maize Res Inst, Chengdu 611130, Peoples R China
6.Sichuan Acad Agr Sci, Inst Agr Informat & Rural Econ, Chengdu 610066, Peoples R China
关键词： Helictotrichon virescens; Low temperature stress; Photosynthesis; Circadian rhythm; LHY; HY5
期刊名称：BMC GENOMICS （ 影响因子：4.547； 五年影响因子：4.931 ）
ISSN： 1471-2164
年卷期： 2022 年 23 卷 1 期
页码：
收录情况： SCI
摘要： Background: Helictotrichon virescens is a perennial grass that is primarily distributed in high altitude areas of 2000-4500m. It is widely cultivated in the Qinghai-Tibet Plateau of China, strongly resistant to cold, and an essential part of the wild herbs in this region. However, the molecular mechanism of the response of H. virescens to low temperature stress and the key regulatory genes for specific biological processes are poorly understood. Results: Physiological and transcriptome analyses were used to study the cold stress response mechanism in H virescens. During the low temperature stress period, the content of chlorophyll a and b decreased more and more with the delay of the treatment time. Among them, the difference between the controls was not significant, and the difference between the control and the treatment was significant. At the same time, the expression of related differential genes was up-regulated during low temperature treatment. In addition, the plant circadian pathway is crucial for their response to cold stress. The expression of differentially expressed genes that encode LHY and HY5 were strongly up-regulated during cold stress. Conclusions: This study should help to fully understand how H. virescens responds to low temperatures. It answers pertinent questions in the response of perennial herbs to cold stress, i.e., how light and low temperature signals integrate to regulate plant circadian rhythms and Decrease of content of chlorophylls (which can be also accompanied with decrease of total quantity of reaction centers) leads to an increase in photosynthetic damage.
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