[闪光照射期间叶绿体中Mn2+和P700+的光依赖反应]
[Light-dependent reactions of Mn2+ and P700+ in chloroplasts during flash illumination].
作者信息
Khangulov S V, Gol'dfel'd M G
出版信息
Biofizika. 1978 Mar-Apr;23(2):272-8.
PMID:206287
Abstract
The changes of the light-induced ESR signal I and exogeneous Mn2+ ions in chloroplasts of Vicia faba plants have been studied under short flash excitation and weak background far red illumination. It is shown that Mn2+ ions reactivate the noncyclic electron transport in chloroplast previously inactivated with high tris concentrations under pulse illumination. Simultaneously with P700+ reduction the ESR signal of free Mn2+ ions decays stoichometrically to P700+ reduction.
摘要
在短闪光激发和弱背景远红光照射下，研究了蚕豆植株叶绿体中光诱导的电子自旋共振信号I和外源Mn2+离子的变化。结果表明，在脉冲光照下，Mn2+离子可使先前因高浓度三羟甲基氨基甲烷而失活的叶绿体中的非循环电子传递重新激活。在P700+还原的同时，游离Mn2+离子的电子自旋共振信号按化学计量衰减至P700+还原。
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