BICARBONATE EFFECTS ON PHOTOINHIBITION - INCLUDING AN EXPLANATION FOR THE SENSITIVITY TO PHOTOINHIBITION UNDER ANAEROBIC CONDITIONS

被引：20

作者：

SUNDBY, C

机构：

[1] Dept. of Biochemistry, University of Lund, S-221 00 Lund

来源：

FEBS LETTERS | 1990年 / 274卷 / 1-2期

关键词：

Bicarbonate; Carbon dioxide; Mehler reaction; Photo-inhibition; Regulation of photosynthesis; Spinach thylakoid membranes;

D O I：

10.1016/0014-5793(90)81333-J

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Isolated thylakoid membranes were found to be efficiently protected against photo-inhibition by sodium bicarbonate (20 mM NaHCO3) under both anaerobic and aerobic conditions. Furthermore, data are presented which indicate that the pronounced sensitivity to photo-inhibition under anaerobic compared to aerobic conditions is due to the removal of protecting bicarbonate, rather than oxygen, from the medium. A second type of bicarbonate effect on photo-inhibition, in apparent contradiction to the protective effect of added NaHCO3, is that thylakoid membranes that were depleted in their endogenous bicarbonate by treatment with formate were found to be less susceptible to photo-inhibition than thylakoids in the normal non-depleted state. © 1990.

引用

页码：77 / 81

页数：5

共 14 条

[1] SEPARATION OF SUBCHLOROPLAST MEMBRANE PARTICLES BY COUNTERCURRENT DISTRIBUTION [J].