Chloroplastic ATP synthase optimizes the trade-off between photosynthetic CO2 assimilation and photoprotection during leaf maturation

doi:10.1016/j.bbabio.2018.06.009

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 资源植物与生物技术所级重点实验室

	Chloroplastic ATP synthase optimizes the trade-off between photosynthetic CO2 assimilation and photoprotection during leaf maturation
	Huang, Wei1 ; Tikkanen, Mikko 2; Cai, Yan-Fei 3; Wang, Ji-Hua 3; Zhang, Shi-Bao1
刊名	BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
	2018-10-01
卷号	1859 期号:10 页码:1067-1074
关键词	Chloroplastic ATP synthase Electron transfer Leaf maturation Photoprotection Photosynthesis Proton motive force
ISSN号	0005-2728
DOI	10.1016/j.bbabio.2018.06.009
英文摘要	In the present study, we studied the role of chloroplastic ATP synthase in photosynthetic regulation during leaf maturation. We measured gas exchange, chlorophyll fluorescence, P700 redox state, and the electrochromic shift signal in mature and immature leaves. Under high light, the immature leaves displayed high levels of non-photochemical quenching (NPQ) and P700 oxidation ratio, and higher values for proton motive force (pmf) and proton gradient (Delta pH) across the thylakoid membranes but lower values for the activity of chloroplastic ATP synthase (g(H)(+)) than the mature leaves. Furthermore, g(H)(+) was significantly and positively correlated with CO2 assimilation rate and linear electron flow (LEF), but negatively correlated with pmf and Delta pH. Delta pH was significantly correlated with LEF and the P700 oxidation ratio. These results indicated that g(H)(+) was regulated to match photosynthetic capacity during leaf maturation, and the formation of pmf and Delta pH was predominantly regulated by the alterations in g(H)(+). In the immature leaves, the high steady-state Delta pH increased lumen acidification, which, in turn, stimulated photoprotection for the photosynthetic apparatus via NPQ induction and photosynthetic control. Our results highlighted the importance of chloroplastic ATP synthase in optimizing the trade-off between CO2 assimilation and photoprotection during leaf maturation.
资助项目	National Natural Science Foundation of China[31670343] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2016347] ; Scientific and Technological Leading Talent Project of Yunnan Province[2016HA005]
WOS研究方向	Biochemistry & Molecular Biology ; Biophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000444929300009
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Scientific and Technological Leading Talent Project of Yunnan Province
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn/handle/151853/62421]
专题	昆明植物研究所_资源植物与生物技术所级重点实验室
通讯作者	Wang, Ji-Hua; Zhang, Shi-Bao
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China 2.Univ Turku, Dept Biochem, Mol Plant Biol, Turku, Finland 3.Yunnan Acad Agr Sci, Flower Res Inst, Kunming, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Huang, Wei,Tikkanen, Mikko,Cai, Yan-Fei,et al. Chloroplastic ATP synthase optimizes the trade-off between photosynthetic CO2 assimilation and photoprotection during leaf maturation[J]. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS,2018,1859(10):1067-1074.
APA	Huang, Wei,Tikkanen, Mikko,Cai, Yan-Fei,Wang, Ji-Hua,&Zhang, Shi-Bao.(2018).Chloroplastic ATP synthase optimizes the trade-off between photosynthetic CO2 assimilation and photoprotection during leaf maturation.BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS,1859(10),1067-1074.
MLA	Huang, Wei,et al."Chloroplastic ATP synthase optimizes the trade-off between photosynthetic CO2 assimilation and photoprotection during leaf maturation".BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1859.10(2018):1067-1074.