Photosynthesis-irradiance response at physiological level: A mechanistic model
文献类型：期刊论文
| 作者 | Han, BP |
| 刊名 | JOURNAL OF THEORETICAL BIOLOGY
 |
| 出版日期 | 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 |
| 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. |
入库方式： OAI收割
来源：海洋研究所
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