Estimation of relative contribution of "mobile phycobilisome" and "energy spillover" in the light-dark induced state transition in Spirulina platensis

doi:10.1007/s11120-007-9272-z

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	Estimation of relative contribution of "mobile phycobilisome" and "energy spillover" in the light-dark induced state transition in Spirulina platensis
	Zhang, Rui; Li, Heng; Xie, Jie; Zhao, Jingquan
刊名	PHOTOSYNTHESIS RESEARCH
	2007-11-01
卷号	94 期号:2-3 页码:315-320
关键词	Cyanobacterium State Transition Phycobilisomes Mobility Energy Spillover Relative Contribution
ISSN号	0166-8595
DOI	10.1007/s11120-007-9272-z
英文摘要	Previously, it was clarified that phycobilisome (PBS) mobility and energy spillover were both involved in light-to-dark induced state transitions of intact Spirulina platensis cells. In this work, by taking advantage of the characteristic fluorescence spectra of photosystem I (PSI) trimers and monomers as indicators, the relative contributions for the "mobile PBS" and "energy spillover" are quantitatively estimated by separating the fluorescence contribution of PBS mobility from that of PSI oligomeric change. Above the phase transition temperature (T-PT) of the membrane lipids, the relative proportion of the contributions is invariable with 65% of "mobile PBS" and 35% of "energy spillover". Below T-PT, the proportion for the "mobile PBS" becomes larger under lowering temperature even reaching 95% with 5% "energy spillover" at 0 degrees C. It is known that lower temperature leads to a further light state due to a more reduced or oxidized PQ pool. Based on the current result, it can be deduced that disequilibrium of the redox state of the PQ pool will trigger PBS movement instead of change in the PSI oligomeric state.
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000251426400013
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/61873]
专题	中国科学院化学研究所
通讯作者	Zhao, Jingquan
作者单位	Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Photochem, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Rui,Li, Heng,Xie, Jie,et al. Estimation of relative contribution of "mobile phycobilisome" and "energy spillover" in the light-dark induced state transition in Spirulina platensis[J]. PHOTOSYNTHESIS RESEARCH,2007,94(2-3):315-320.
APA	Zhang, Rui,Li, Heng,Xie, Jie,&Zhao, Jingquan.(2007).Estimation of relative contribution of "mobile phycobilisome" and "energy spillover" in the light-dark induced state transition in Spirulina platensis.PHOTOSYNTHESIS RESEARCH,94(2-3),315-320.
MLA	Zhang, Rui,et al."Estimation of relative contribution of "mobile phycobilisome" and "energy spillover" in the light-dark induced state transition in Spirulina platensis".PHOTOSYNTHESIS RESEARCH 94.2-3(2007):315-320.