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

doi:10.1016/j.bbabio.2018.06.009

	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
	2018-10-01
发表期刊	BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
ISSN	0005-2728
卷号	1859 期号:10 页码:1067-1074
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.
关键词	Chloroplastic ATP synthase Electron transfer Leaf maturation Photoprotection Photosynthesis Proton motive force
DOI	10.1016/j.bbabio.2018.06.009
语种	英语
WOS记录号	WOS:000444929300009
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/62421
专题	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.