UNSPECIFIED (2000) Independent action of ELF3 and phyB to control hypocotyl elongation and flowering time. PLANT PHYSIOLOGY, 122 (4). pp. 1149-1160. ISSN 0032-0889

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Abstract

Light regulates various aspects of plant growth, and the photoreceptor phytochrome B (phyB) mediates many responses to red light. In a screen for Arabidopsis mutants with phenotypes similar to those of phyB mutants, we isolated two new elf3 mutants. One has weaker morphological phenotypes than previously identified elf3 alleles, but still abolishes circadian rhythms under continuous light. Like phyB mutants, elf3 mutants have elongated hypocotyls and petioles, flower early, and have defects in the red light response. However, we found that elf3 mutations have an additive interaction with a phyB null mutation, with phyA or hy4 null mutations, or with a PHYB overexpression construct, and that an elf3 mutation does not prevent nuclear localization of phyB. These results suggest that either there is substantial redundancy in phyB and elf3 function, or the two genes regulate distinct signaling pathways.

Item Type:	Journal Article
Subjects:	S Agriculture > SB Plant culture
Journal or Publication Title:	PLANT PHYSIOLOGY
Publisher:	AMER SOC PLANT PHYSIOLOGISTS
ISSN:	0032-0889
Date:	April 2000
Volume:	122
Number:	4
Number of Pages:	12
Page Range:	pp. 1149-1160
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/13398

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