Distinct Roles of CONSTANS Target Genes in Reproductive Development of Arabidopsis
Abstract
In plants, flowering is triggered by endogenous and environmental signals. CONSTANS (CO) promotes flowering of Arabidopsis in response to day length. Four early target genes of CO were identified using a steroid-inducible version of the protein. Two of these genes,SUPPRESSOR OF OVEREXPRESSION OF CO 1 (SOC1) andFLOWERING LOCUS T (FT), are required for CO to promote flowering; the others are involved in proline or ethylene biosynthesis. The SOC1 and FT genes are also regulated by a second flowering-time pathway that acts independently of CO. Thus, early target genes of CO define common components of distinct flowering-time pathways.
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Published In
Science
Volume 288 | Issue 5471
2 June 2000
2 June 2000
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Received: 15 February 2000
Accepted: 4 May 2000
Published in print: 2 June 2000
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- Alon Samach et al.
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