Premium
Diurnal regulation of plant growth *
Author(s) -
NOZUE KAZUNARI,
MALOOF JULIN N.
Publication year - 2006
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/j.1365-3040.2005.01489.x
Subject(s) - circadian rhythm , circadian clock , bacterial circadian rhythms , biology , endogeny , hypocotyl , plant growth , period (music) , rhythm , photoperiodism , light effects on circadian rhythm , phase response curve , neuroscience , microbiology and biotechnology , botany , medicine , endocrinology , physics , acoustics
ABSTRACT Life occurs in an ever‐changing environment. Some of the most striking and predictable changes are the daily rhythms of light and temperature. To cope with these rhythmic changes, plants use an endogenous circadian clock to adjust their growth and physiology to anticipate daily environmental changes. Most studies of circadian functions in plants have been performed under continuous conditions. However, in the natural environment, diurnal outputs result from complex interactions of endogenous circadian rhythms and external cues. Accumulated studies using the hypocotyl as a model for plant growth have shown that both light signalling and circadian clock mutants have growth defects, suggesting strong interactions between hypocotyl elongation, light signalling and the circadian clock. Here, we review evidence suggesting that light, plant hormones and the circadian clock all interact to control diurnal patterns of plant growth.