Journal Article

Late-Flowering Genes Interact with Early-Flowering Genes to Regulate Flowering Time in <i>Arabidopsis thaliana</i>

Ming-Lun Chou and Chang-Hsien Yang

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 40, issue 7, pages 702-708
Published in print January 1999 | ISSN: 0032-0781
Published online January 1999 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/oxfordjournals.pcp.a029596
Late-Flowering Genes Interact with Early-Flowering Genes to Regulate Flowering Time in Arabidopsis thaliana

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  • Plant Sciences and Forestry
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  • Molecular and Cell Biology

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To investigate the genetic mechanisms regulating the transition from the vegetative to reproductive growth in Arabidopsis, double mutants between three different early-flowering mutants, early flowering 1-1, 2-1, 3-1, (elf 1-1, 2-1, 3-1) and five different late-flowering mutants, gi-1, ft-1, fwa-1, ld-1, and fca-9, were constructed and phenotypes analyzed. Double mutants in all combinations displayed the late-flowering phenotypes which resembled their respective late-flowering parents in both flowering time and the number of vegetative leaves produced. The results indicate that five late-flowering mutants are epistatic to all three early-flowering mutants tested here. This epistatic relationship suggests that ELF1, ELF2, and ELF3 genes function upstream of these five late-flowering genes no matter if they are functioning in autonomous or photo-period pathways. These three early-flowering genes may negatively modify the activity of most late-flowering genes to influence the time of the vegetative-to-reproductive transition in Arabidopsis.

Keywords: Arabidopsis thaliana; Double mutants; Early flowering mutants; Late-flowering mutants

Journal Article.  0 words. 

Subjects: Plant Sciences and Forestry ; Biochemistry ; Molecular and Cell Biology

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