CIRCADIAN OSCILLATIONS OF CYTOSOLIC AND CHLOROPLASTIC FREE CALCIUM IN PLANTS

被引：272

作者：

JOHNSON, CH

KNIGHT, MR

KONDO, T

MASSON, P

SEDBROOK, J

HALEY, A

TREWAVAS, A

机构：

[1] VANDERBILT UNIV, DEPT BIOL, NASHVILLE, TN 37235 USA

[2] UNIV OXFORD, DEPT PLANT SCI, OXFORD OX1 3RB, ENGLAND

[3] NAGOYA UNIV, FAC SCI, DEPT BIOL, NAGOYA, AICHI 46401, JAPAN

[4] UNIV WISCONSIN, GENET LAB, MADISON, WI 53706 USA

[5] UNIV EDINBURGH, INST CELL & MOLEC BIOL, EDINBURGH EH9 3JH, MIDLOTHIAN, SCOTLAND

来源：

SCIENCE | 1995年 / 269卷 / 5232期

关键词：

D O I：

10.1126/science.7569925

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Tobacco and Arabidopsis plants, expressing a transgene for the calcium-sensitive luminescent protein apoaequorin, revealed circadian oscillations in free cytosolic calcium that can be phase-shifted by light-dark signals. When apoaequorin was targeted to the chloroplast, circadian chloroplast calcium rhythms were likewise observed after transfer of the seedlings to constant darkness. Circadian oscillations in free calcium concentrations can be expected to control many calcium-dependent enzymes and processes accounting for circadian outputs. Regulation of calcium flux is therefore fundamental to the organization of circadian systems.

引用

页码：1863 / 1865

页数：3

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