Institut für Angewandte Physik, Leibnizstr. 11, D-2300, Kiel, Germany.
Photosynth Res. 1991 Jun;28(3):119-30. doi: 10.1007/BF00054125.
The investigation of the kinetics of chlorophyll-fluorescence under continuous background light enables the application of linearizing conditions. This approach, which provides a quantitative evaluation by means of curve-fitting routines, is applied to the investigation of the linear kinetics of the I-D-P phase. Using changes in PS II-light, PS I-light and in CO2-concentration as input signals showed that a pool at the acceptor side of PS I, in addition to the plastoquinone pool, plays an essential role in the generation of the dip. The occurrence of the dip is related to the sign of the faster one of the two components related to the I-D and the D-P phase. This sign can be inverted by the ratio of PS I and PS II light. However, model calculations show that the change of this sign does not allow a decision which one of the two components is related to which one of the two pools. The dependence of the sign of the faster component on light conditions can generate different types of I-D-P transitions, namely nearly monophasic increases, sigmoid responses or dips. As these phenomena are already created by the linear responses, non-linear effects or additional loops between PS II and PS I are not required for the explanation of the basic features.
在连续背景光下对叶绿素荧光动力学的研究可以应用线性化条件。这种方法通过曲线拟合程序进行定量评估，应用于 I-D-P 相的线性动力学研究。使用 PS II 光、PS I 光和 CO2 浓度的变化作为输入信号表明，PSI 受体侧的一个池，除了质醌池外，在产生跌落中起着重要作用。跌落的发生与与 I-D 和 D-P 相相关的两个分量中较快的一个的符号有关。这个符号可以通过 PS I 和 PS II 光的比值来反转。然而，模型计算表明，这个符号的变化并不能决定这两个分量中的哪一个与两个池中的哪一个有关。较快分量的符号对光照条件的依赖性可以产生不同类型的 I-D-P 跃迁，即几乎单相增加、S 形响应或跌落。由于这些现象已经由线性响应产生，因此不需要 PS II 和 PS I 之间的非线性效应或附加环来解释基本特征。
