Partially dissecting the steady-state electron fluxes in Photosystem I in wild-type and pgr5 and ndh mutants of Arabidopsis

doi:10.3389/fpls.2015.00758

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	Partially dissecting the steady-state electron fluxes in Photosystem I in wild-type and pgr5 and ndh mutants of Arabidopsis
	Kou, Jiancun ; Takahashi, Shunichi ; Fan, Da-Yong ; Badger, Murray R.; Chow, Wah S.
刊名	FRONTIERS IN PLANT SCIENCE
	2015
卷号	6
关键词	antimycin A Arabidopsis cyclic electron flow ndh mutant P700 pgr5 mutant photosystem I
ISSN号	1664-462X
DOI	10.3389/fpls.2015.00758
文献子类	Article
英文摘要	Cyclic electron flux (CEF) around Photosystem I (PS I) is difficult to quantify. We obtained the linear electron flux (LEFO2) through both photosystems and the total electron flux through PS I (ETR1) in Arabidopsis in CO2-enriched air. Delta Flux = ETR1 - LEFO2 is an upper estimate of CEF, which consists of two components, an antimycin A-sensitive, PGR5 (proton gradient regulation 5 protein)-dependent component and an insensitive component facilitated by a chloroplastic nicotinamide adenine dinucleotide dehydrogenase-like complex (NDH). Using wild type as well as pgr5 and ndh mutants, we observed that (1) 40% of the absorbed light was partitioned to PS I; (2) at high irradiance a substantial antimycin A-sensitive CEF occurred in the wild type and the ndh mutant; (3) at low irradiance a sizable antimycin A-sensitive CEF occurred in the wild type but not in the ndh mutant, suggesting an enhancing effect of NDH in low light; and (4) in the pgr5 mutant, and the wild type and ndh mutant treated with antimycin A, a residual Delta Flux existed at high irradiance, attributable to charge recombination and/or pseudo-cyclic electron flow. Therefore, in low-light-acclimated plants exposed to high light, Delta Flux has contributions from various paths of electron flow through PS I.
学科主题	Plant Sciences
出版地	LAUSANNE
WOS关键词	FLOW ; TRANSPORT ; PHOTOSYNTHESIS ; PLANTS ; PHOTOPHOSPHORYLATION ; PHOTOPROTECTION ; MECHANISMS ; PSI
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000361308500002
资助机构	China Scholarship Council Fellowship ; Knowledge Innovation Program of the Chinese Academy of Sciences [KZCX2-XB3-09-02] ; Australian Research Council [DP1093872, CE140100015] ; Grants-in-Aid for Scientific Research [15K14611] Funding Source: KAKEN
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/25971]
专题	植被与环境变化国家重点实验室
作者单位	1.Kou, Jiancun; Takahashi, Shunichi; Fan, Da-Yong; Badger, Murray R.; Chow, Wah S.] Australian Natl Univ, Res Sch Biol, Div Plant Sci, Canberra, ACT 2601, Australia 2.Northwest A&F Univ, Coll Anim Sci & Technol, Yangling, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Kou, Jiancun,Takahashi, Shunichi,Fan, Da-Yong,et al. Partially dissecting the steady-state electron fluxes in Photosystem I in wild-type and pgr5 and ndh mutants of Arabidopsis[J]. FRONTIERS IN PLANT SCIENCE,2015,6.
APA	Kou, Jiancun,Takahashi, Shunichi,Fan, Da-Yong,Badger, Murray R.,&Chow, Wah S..(2015).Partially dissecting the steady-state electron fluxes in Photosystem I in wild-type and pgr5 and ndh mutants of Arabidopsis.FRONTIERS IN PLANT SCIENCE,6.
MLA	Kou, Jiancun,et al."Partially dissecting the steady-state electron fluxes in Photosystem I in wild-type and pgr5 and ndh mutants of Arabidopsis".FRONTIERS IN PLANT SCIENCE 6(2015).