叶绿体 P515 反应慢相中有生电和非生电成分的证据。

Evidence for an electrogenic and a non-electrogenic component in the slow phase of the P515 response in chloroplasts.

机构信息

Laboratory of Plant Physiological Research, Agricultural University, Gen. Foulkesweg 72, 6703 BW, Wageningen, The Netherlands.

出版信息

Photosynth Res. 1989 May;20(2):119-28. doi: 10.1007/BF00034121.

DOI:10.1007/BF00034121

PMID:24425531

Abstract

The flash-induced P515 absorbance change in intact chloroplasts consists of a fast and a slow phase. There is disagreement in the literature over the origin of the slow phase. Here we argue that the flash-induced slow phase in P515 absorbance change is composed of two different components. One component is most probably due to the electrogenic Q-cycle associated with the cytochrome b/f complex. The second component has decay kinetics that are much slower than the electrogenic reactions. We suggest that the second component is due to a non-electrogenic reaction.

摘要

在完整叶绿体中，光诱导的 P515 吸收变化包括快速相和慢速相。关于慢速相的起源，文献中存在分歧。在这里，我们认为光诱导的 P515 吸收变化中的慢速相由两个不同的组成部分组成。一个组成部分很可能是由于与细胞色素 b/f 复合物相关的电致 Q 循环。第二个组成部分的衰减动力学比电致反应慢得多。我们认为第二个组成部分是由于非电致反应引起的。