Campbell Douglas A, Tyystjärvi Esa
Biology and Biochemistry, Mount Allison University, Sackville, Canada NB E4L 3G7.
Biochim Biophys Acta. 2012 Jan;1817(1):258-65. doi: 10.1016/j.bbabio.2011.04.010. Epub 2011 May 1.
The photoinactivation (also termed photoinhibition or photodamage) of Photosystem II (PSII) and the counteracting repair reactions are fundamental elements of the metabolism and ecophysiology of oxygenic photoautotrophs. Differences in the quantification, parameterization and terminology of Photosystem II photoinactivation and repair can erect barriers to understanding, and particular parameterizations are sometimes incorrectly associated with particular mechanistic models. These issues lead to problems for ecophysiologists seeking robust methods to include photoinhibition in ecological models. We present a comparative analysis of terms and parameterizations applied to photoinactivation and repair of Photosystem II. In particular, we show that the target size and quantum yield approaches are interconvertible generalizations of the rate constant of photoinactivation across a range of incident light levels. Our particular emphasis is on phytoplankton, although we draw upon the literature from vascular plants. This article is part of a Special Issue entitled: Photosystem II.
光系统II（PSII）的光失活（也称为光抑制或光损伤）及相应的修复反应是产氧光合自养生物新陈代谢和生态生理学的基本要素。光系统II光失活和修复在量化、参数化及术语方面的差异会阻碍理解，而且特定的参数化有时会与特定的机理模型产生错误关联。这些问题给生态生理学家在生态模型中纳入光抑制寻求可靠方法带来了困难。我们对应用于光系统II光失活和修复的术语及参数化进行了比较分析。特别是，我们表明目标大小和量子产率方法是在一系列入射光水平下光失活速率常数的可相互转换的概括。我们特别关注浮游植物，尽管我们借鉴了维管植物的文献。本文是名为“光系统II”的特刊的一部分。
