光系统 II 捕光叶绿素 a/b 结合蛋白的光和营养调控在眼虫中的 mRNA 水平。

Photo and Nutritional Regulation of the Light-Harvesting Chlorophyll a/b-Binding Protein of Photosystem II mRNA Levels in Euglena.

机构信息

School of Biological Sciences, University of Nebraska, Lincoln, Nebraska 68588.

出版信息

Plant Physiol. 1992 Mar;98(3):808-12. doi: 10.1104/pp.98.3.808.

DOI:10.1104/pp.98.3.808

PMID:16668752

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1080273/

Abstract

In Euglena gracillis var bacillaris, light exposure increases the level of mRNA encoding the light-harvesting chlorophyll a/b-binding protein of photosystem II (LHCPII) approximately twofold. LHCPII mRNA levels increased in the dark upon either malate or ethanol addition. LHCPII mRNA is present but LHCPII is not synthesized in the bleached mutants W(3)BUL and W(10)BSmL, which lack protochlorophyll(ide) and most if not all of the chloroplast genome. Light exposure increased LHCPII mRNA levels in W(3)BUL but not in W(10)BSmL. Carbon availability and light acting through a nonchloroplast photoreceptor appear to regulate LHCPII mRNA levels. A chloroplast photoreceptor and/or a product produced by the chloroplast appear to regulate LHCPII mRNA translation.

摘要

在衣藻变种中，光暴露使编码光合系统 II （PSII）的光捕获叶绿素 a / b 结合蛋白（LHCPII）的 mRNA 水平增加约两倍。无论添加苹果酸还是乙醇，在黑暗中LHCPII mRNA 水平都会增加。在缺少原叶绿素（ide）和大部分（如果不是全部）叶绿体基因组的白化突变体 W(3)BUL 和 W(10)BSmL 中存在 LHCPII mRNA，但未合成 LHCPII。光暴露增加了 W(3)BUL 中的 LHCPII mRNA 水平，但在 W(10)BSmL 中没有增加。碳供应和通过非叶绿体光受体的光似乎调节 LHCPII mRNA 水平。叶绿体光受体和/或叶绿体产生的产物似乎调节 LHCPII mRNA 的翻译。