| Review: |
Circadian rhythms are biological rhythms that repeat daily, are persistent in constant conditions, entrained in local time, and maintain a constant periodicity over a broad range of physiological temperatures. At its simplest level, the circadian system can be visualized as a three-component pathway, with photoreceptor(s), a central oscillator, and the output pathways that culminate in the overt rhythm under examination: the actual ‘hands’ of the circadian clock. here, there are chapters on: the clockwork Arabidopsis; pseudo-response regulator genes; multiple and slave oscillators; entrainment of the circadian clock; photoreceptors and light-signalling pathways; circadian regulation of global gene expression and metabolism; photoperiodic responses and flowering; circadian regulation of Ca2+ signalling; the circadian clock in CAM plants; and clock evolution and adaptations. |