Circadian rhythm formation in plant seedling: global synchronization and bifurcation as a coupled nonlinear oscillator system

被引：6

作者：

Fukuda, H ^{[1
]}

Kodama, J

Kai, S

机构：

[1] Kyushu Univ, Grad Sch Engn, Dept Appl Quantum Phys & Nucl Engn, Fukuoka 8128581, Japan

[2] Kyushu Univ, Grad Sch Syst Life Sci, Dept Appl Phys, Fac Engn, Fukuoka 8128581, Japan

[3] Kyushu Univ, Grad Sch Syst Life Sci, Dept Life Sci, Fukuoka 8128581, Japan

来源：

BIOSYSTEMS | 2004年 / 77卷 / 1-3期

关键词：

coupled nonlinear oscillators; synchronization; bifurcation; circadian rhythm; germination process;

D O I：

10.1016/j.biosystems.2004.03.006

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Circadian rhythm formation is studied in seedlings after germination measuring their respiratory metabolism. The circadian rhythm is clearly observed at about 170h (the onset time t(CR-ON)) after germination of seeds in natural conditions in a dark incubator. There are no clear cyclic signals in gas exchange before tCR-ON. Application of external triggers (temperature shocks) near the onset of the rhythm in seedling growth strongly affects formation processes. The onset is shifted earlier up to 50h by application of perturbations. This fact may suggest that the circadian rhythms appear via subcritical bifurcation. (C) 2004 Elsevier Ireland Ltd. All rights reserved.

引用

页码：41 / 46

页数：6

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