UNSPECIFIED (1998) The late elongated hypocotyl mutation of Arabidopsis disrupts circadian rhythms and the photoperiodic control of flowering. CELL, 93 (7). pp. 1219-1229. ISSN 0092-8674

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Abstract

The dominant late elongated hypocotyl (lhy) mutation of Arabidopsis disrupted circadian clock regulation of gene expression and leaf movements and caused flowering to occur independently of photoperiod. LHY was shown to encode a MYB DNA-binding protein. In wild-type plants, the LHY mRNA showed a circadian pattern of expression with a peak around dawn but in the mutant was expressed constantly at high levels. Increased LHY expression from a transgene caused the endogenous gene to be expressed at a constant level, suggesting that LHY was part of a feedback circuit that regulated its own expression. Thus, constant expression of LHY disrupts several distinct circadian rhythms in Arabidopsis, and LHY may be closely associated with the central oscillator of the circadian clock.

Item Type:	Journal Article
Subjects:	Q Science > QD Chemistry Q Science > QH Natural history > QH301 Biology
Journal or Publication Title:	CELL
Publisher:	CELL PRESS
ISSN:	0092-8674
Date:	26 June 1998
Volume:	93
Number:	7
Number of Pages:	11
Page Range:	pp. 1219-1229
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/15620

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