MODULATION OF CHLOROPLAST MOVEMENT IN THE GREEN-ALGA MOUGEOTIA BY THE CA-2+ IONOPHORE A23187 AND BY CALMODULIN ANTAGONISTS

被引：73

作者：

SERLIN, BS

ROUX, SJ

机构：

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES | 1984年 / 81卷 / 20期

关键词：

D O I：

10.1073/pnas.81.20.6368

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The Ca2+ ionophore A23187 can induce chloroplast rotation within a single nonirradiated Mougeotia cell. The induced turning was dependent on the position of ionophore application and Ca2+ in the external medium. The role of calmodulin in mediating light-induced chloroplast rotation in the alga Mougeotia was investigated by using the paired calmodulin-antagonist drugs W5-W7 and W12-W13. In each pair, the antagonist with the greater affinity for calmodulin had the greater inhibitory effect on the phytochrome-controlled light response. Ca apparently functions as a chemical messenger to couple the stimulus of phytochrome photoactivation with physiological responses in plants.

引用

页码：6368 / 6372

页数：5

共 21 条

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