QQ客服 官方微博 反馈留言

	Photosynthesis-irradiance response at physiological level: A mechanistic model
	Han, BP
刊名	JOURNAL OF THEORETICAL BIOLOGY
	2001-11-21
卷号	213期号:2页码:121-127
关键词	Photosystem-ii Dynamic-model Steady-state Phytoplankton Light Growth Photoinhibition Photoadaptation Absorption Curve
ISSN号	0022-5193
DOI	10.1006/jtbi.2001.2413
文献子类	Article
英文摘要	A mechanistic model is developed to present the photosynthetic response of phytoplankton to irradiance at the physiological level. The model is operated on photosynthetic units (PSU), and each PSU is assumed to have two states: reactive and activated. Light absorption that drives a reactive PSU into the activated state results from the effective absorption of the PSU. Transitions between the two states are asymmetrical in rate. A PSU in the reactive state becomes activated much faster than it recovers from the activated state to the reactive one. The turnover time for an activated PSU to transit into the reactive one is defined by the turnover time of the electron transport chain. The present model yields a photosynthesis-irradiance curve (PE-curve) in a hyperbola, which is described by three physiological parameters: effective cross-section (sigma (PSII)), turnover time of electron transport chain (tau) and number of PSUs (N). The PE-curve has an initial slope of sigma (PSII) x N, a half-saturated irradiance of 1/(sigma (PSII)), and a maximal photosynthetic rate of Nlc at the saturated irradiance. The PE-curve from the present model is comparable to the empirical function based on the target theory described by the Poisson distribution. (C) 2001 Academic Press.; A mechanistic model is developed to present the photosynthetic response of phytoplankton to irradiance at the physiological level. The model is operated on photosynthetic units (PSU), and each PSU is assumed to have two states: reactive and activated. Light absorption that drives a reactive PSU into the activated state results from the effective absorption of the PSU. Transitions between the two states are asymmetrical in rate. A PSU in the reactive state becomes activated much faster than it recovers from the activated state to the reactive one. The turnover time for an activated PSU to transit into the reactive one is defined by the turnover time of the electron transport chain. The present model yields a photosynthesis-irradiance curve (PE-curve) in a hyperbola, which is described by three physiological parameters: effective cross-section (sigma (PSII)), turnover time of electron transport chain (tau) and number of PSUs (N). The PE-curve has an initial slope of sigma (PSII) x N, a half-saturated irradiance of 1/(sigma (PSII)), and a maximal photosynthetic rate of Nlc at the saturated irradiance. The PE-curve from the present model is comparable to the empirical function based on the target theory described by the Poisson distribution. (C) 2001 Academic Press.
学科主题	Biology ; Mathematical & Computational Biology
URL标识	查看原文
语种	英语
WOS记录号	WOS:000172346400001
公开日期	2010-12-22
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/2829]
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.Jinan Univ, Inst Hydrobiol, Guangzhou 510632, Peoples R China 2.Chinese Acad Sci, Inst Oceanog, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Han, BP. Photosynthesis-irradiance response at physiological level: A mechanistic model[J]. JOURNAL OF THEORETICAL BIOLOGY,2001,213(2):121-127.
APA	Han, BP.(2001).Photosynthesis-irradiance response at physiological level: A mechanistic model.JOURNAL OF THEORETICAL BIOLOGY,213(2),121-127.
MLA	Han, BP."Photosynthesis-irradiance response at physiological level: A mechanistic model".JOURNAL OF THEORETICAL BIOLOGY 213.2(2001):121-127.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。