Proteomic Analysis of Rice Subjected to Low Light Stress and Overexpression of OsGAPB Increases the Stress Tolerance
文献类型： 外文期刊
作者： Liu, Yangxuan 1 ; Pan, Ting 1 ; Tang, Yuying 1 ; Zhuang, Yong 1 ; Liu, Zhijian 1 ; Li, Penghui 1 ; Li, Hui 1 ; Huang, Wei 1 ;
作者机构： 1.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Southeast Asia Biodivers Res Inst, Yezin 05282, Nay Pyi Taw, Myanmar
4.Sichuan Acad Agr Sci, Crop Res Inst, Chengdu 610066, Peoples R China
5.Anhui Agr Univ, Sch Hort, Hefei 230036, Peoples R China
期刊名称：RICE （ 影响因子：4.783； 五年影响因子：5.23 ）
ISSN： 1939-8425
年卷期： 2020 年 13 卷 1 期
页码：
收录情况： SCI
摘要： Background: Light provides the energy for photosynthesis and determines plant morphogenesis and development. Low light compromises photosynthetic efficiency and leads to crop yield loss. It remains unknown how rice responds to low light stress at a proteomic level. Results: In this study, the quantitative proteomic analysis with isobaric tags for relative and absolute quantitation (iTRAQ) was used and 1221 differentially expressed proteins (DEPs) were identified from wild type rice plants grown in control or low light condition (17% light intensity of control), respectively. Bioinformatic analysis of DEPs indicated low light remarkably affects the abundance of chloroplastic proteins. Specifically, the proteins involved in carbon fixation (Calvin cycle), electron transport, and ATPase complex are severely downregulated under low light. Furthermore, overexpression of the downregulated gene encoding rice beta subunit of glyceraldehyde-3-phosphate dehydrogenase (OsGAPB), an enzyme in Calvin cycle, significantly increased the CO2 assimilation rate, chlorophyll content and fresh weight under low light conditions but have no obvious effect on rice growth and development under control light. Conclusion: Our results revealed that low light stress on vegetative stage of rice inhibits photosynthesis possibly by decreasing the photosynthetic proteins and OsGAPB gene is a good candidate for manipulating rice tolerance to low light stress.
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