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	A mechanistic model of algal photoinhibition induced by photodamage to Photosystem-II
	Han, BP
刊名	JOURNAL OF THEORETICAL BIOLOGY
	2002-02-21
卷号	214期号:4页码:519-527
关键词	Phytoplankton Photosynthesis Light-intensity Dynamic-model Marine-phytoplankton Natural Assemblages Electron-transport Photoinactivation Growth Productivity Fluorescence
ISSN号	0022-5193
DOI	10.1006/jtbi.2001.2468
文献子类	Article
英文摘要	Photoinhibition is a central problem for the understanding of plasticity in photosynthesis vs. irradiance response. It effectively reduces the photosynthetic rate. In this contribution, we present a mechanistic model of algal photoinhibition induced by photodamage to photosystem-II. Photosystem-IIs (PSIIs) are assumed to exist in three states: open, closed and inhibited. Photosynthesis is closely associated with the transitions between the three states. The present model is defined by four parameters: effective cross section of PSII, number of PSIIs, turnover time of electron transfer chains and the ratio of rate constant of damage to that of repair of D1 proteins in PSIIs. It gives a photosynthetic response curve of phytoplankton to irradiance (PI-curve). Without photoinhibition, the PI-curve is in hyperbola with the first three parameters. The PI-curve with photoinhibition can be simplified to the same form as the hyperbola by replacing either the number of PSIIs with the number of functional PSIIs or the turnover time of electron transfer chains with the average turnover time.; Photoinhibition is a central problem for the understanding of plasticity in photosynthesis vs. irradiance response. It effectively reduces the photosynthetic rate. In this contribution, we present a mechanistic model of algal photoinhibition induced by photodamage to photosystem-II. Photosystem-IIs (PSIIs) are assumed to exist in three states: open, closed and inhibited. Photosynthesis is closely associated with the transitions between the three states. The present model is defined by four parameters: effective cross section of PSII, number of PSIIs, turnover time of electron transfer chains and the ratio of rate constant of damage to that of repair of D1 proteins in PSIIs. It gives a photosynthetic response curve of phytoplankton to irradiance (PI-curve). Without photoinhibition, the PI-curve is in hyperbola with the first three parameters. The PI-curve with photoinhibition can be simplified to the same form as the hyperbola by replacing either the number of PSIIs with the number of functional PSIIs or the turnover time of electron transfer chains with the average turnover time.
学科主题	Biology ; Mathematical & Computational Biology
URL标识	查看原文
语种	英语
WOS记录号	WOS:000174260400001
公开日期	2010-12-22
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/2817]
专题	海洋研究所_海洋生态与环境科学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanog, Qingdao 266071, Peoples R China 2.Jinan Univ, Inst Hydrobiol, Guangzhou 510632, Peoples R China
推荐引用方式 GB/T 7714	Han, BP. A mechanistic model of algal photoinhibition induced by photodamage to Photosystem-II[J]. JOURNAL OF THEORETICAL BIOLOGY,2002,214(4):519-527.
APA	Han, BP.(2002).A mechanistic model of algal photoinhibition induced by photodamage to Photosystem-II.JOURNAL OF THEORETICAL BIOLOGY,214(4),519-527.
MLA	Han, BP."A mechanistic model of algal photoinhibition induced by photodamage to Photosystem-II".JOURNAL OF THEORETICAL BIOLOGY 214.4(2002):519-527.

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