您好，欢迎访问云南省农业科学院 机构知识库！

The water-water cycle is a major electron sink in Camellia species when CO2 assimilation is restricted

文献类型： 外文期刊

作者： Cai, Yan-Fei 1 ; Yang, Qiu-Yun 2 ; Li, Shu-Fa 1 ; Wang, Ji-Hua 1 ; Huang, Wei 2 ;

作者机构： 1.Yunnan Acad Agr Sci, Flower Res Inst, 2238 Beijing Rd, Kunming, Yunnan, Peoples R China

2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China

关键词： Alternative electron flow;Camellia;Energy budget;Photosynthesis;Photorespiration;Photoprotection

期刊名称：JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY （ 影响因子：6.252； 五年影响因子：5.375 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The water-water cycle (WWC) is thought to dissipate excess excitation energy and balance the ATP/NADPH energy budget under some conditions. However, the importance of the WWC in photosynthetic regulation remains controversy. We observed that three Camellia cultivars exhibited high rates of photosynthetic electron flow under high light when photosynthesis was restricted. We thus tested the hypothesis that the WWC is a major electron sink in the three Camellia cultivars when CO2 assimilation is restricted. Light response curves indicated that the WWC was strongly increased with photorespiration and was positively correlated with extra ATP supplied from other flexible mechanisms excluding linear electron flow, implying that the WWC is an important alternative electron sink to balance ATP/NADPH energy demand for sustaining photorespiration in Camellia cultivars. Interestingly, when photosynthesis was depressed by the decreases in stomatal and mesophyll conductance, the rates of photosynthetic electron flow through photosystem II declined slightly and the rates of WWC was enhanced. Furthermore, the increased electron flow of WWC was positively correlated with the ratio of Rubisco oxygenation to carboxylation, supporting the involvement of alternative electron flow in balancing the ATP/NADPH energy budget. We propose that the WWC is a crucial electron sink to regulate ATP/NADPH energy budget and dissipate excess energy excitation in Camellia species when CO2 assimilation is restricted. (C) 2016 Published by Elsevier B.V.

  • 相关文献

[1]Genetic diversity and differentiation of Camellia sinensis L. (cultivated tea) and its wild relatives in Yunnan province of China, revealed by morphology, biochemistry and allozyme studies. Jin, C,Wang, PS,Xia, YM,Xu, M,Pei, SJ. 2005

[2]Genotypic variation in transpiration efficiency due to differences in photosynthetic capacity among sugarcane-related clones. Li, Chunjia,Lu, Xin,Xu, Chaohua,Fan, Yuanhong,Jackson, Phillip,Cai, Qing,Basnayake, Jayapathi,Lakshmanan, Prakash,Ghannoum, Oula.

[3]Analysis of genome expression in the response of Oryza granulata to Xanthomonas oryzae pv oryzae. Lv, Guang-Lei,Wu, Wen-Ting,Cheng, Zai-Quan,Luo, Yu,Chen, Shan-Na.

[4]Effects of LaCl3 on photosynthesis and the accumulation of tanshinones and salvianolic acids in Salvia miltiorrhiza seedlings. Zhou Jie,Guo Lanping,Yang Guang,Zhao Manxi,Huang Luqi,Zhang Ji,Zhou Shufeng,Zhou Shufeng. 2011

[5]How do leaf anatomies and photosynthesis of three Rhododendron species relate to their natural environments?. Cai, Yan-Fei,Li, Shi-Feng,Li, Shu-Fa,Xie, Wei-Jia,Song, Jie,Cai, Yan-Fei,Li, Shi-Feng,Li, Shu-Fa,Xie, Wei-Jia,Song, Jie,Cai, Yan-Fei,Li, Shi-Feng,Li, Shu-Fa,Xie, Wei-Jia,Song, Jie. 2014

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：云南省农业科学院

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