eCite Digital Repository

Isolation and functional analysis of CONSTANS-LIKE genes suggests that a central role for CONSTANS in flowering time control is not evolutionarily conserved in Medicago truncatula

Citation

Wong, ACS and Hecht, VFG and Picard, K and Diwadkar, P and Laurie, RE and Wen, J and Mysore, K and Macknight, RC and Weller, JL, Isolation and functional analysis of CONSTANS-LIKE genes suggests that a central role for CONSTANS in flowering time control is not evolutionarily conserved in Medicago truncatula, Frontiers in Plant Science, 5 Article 486. ISSN 1664-462X (2014) [Refereed Article]


Preview
PDF
1Mb
  

Copyright Statement

Copyright 2014 Wong, Hecht, Picard, Diwadkar, Laurie, Wen, Mysore, Macknight and Weller. Licenced under Creative Commons Attribution (CC BY) http://creativecommons.org/licenses/by-nc-nd/

DOI: doi:10.3389/fpls.2014.00486

Abstract

The zinc finger transcription factor CONSTANS has a well-established central role in the mechanism for photoperiod sensing in Arabidopsis, integrating light and circadian clock signals to upregulate the florigen gene FT under long-day but not short-day conditions. Although CONSTANS-LIKE (COL) genes in other species have also been shown to regulate flowering time, it is not clear how widely this central role in photoperiod sensing is conserved. Legumes are a major plant group and various legume species show significant natural variation for photoperiod responsive flowering. Orthologs of several Arabidopsis genes have been shown to participate in photoperiodic flowering in legumes, but the possible function of COL genes as integrators of the photoperiod response has not yet been examined in detail. Here we characterize the COL family in the temperate long-day legume Medicago truncatula, using expression analyses, reverse genetics, transient activation assays and Arabidopsis transformation. Our results provide several lines of evidence suggesting that COL genes are unlikely to have a central role in the photoperiod response mechanism in this species.

Item Details

Item Type:Refereed Article
Keywords:legume, flowering, photoperiod, Medicago, CONSTANS
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Plant Physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Environmentally Sustainable Plant Production
Objective Field:Environmentally Sustainable Plant Production not elsewhere classified
Author:Wong, ACS (Mr Albert Wong)
Author:Hecht, VFG (Dr Valerie Hecht)
Author:Weller, JL (Associate Professor Jim Weller)
ID Code:97192
Year Published:2014
Web of Science® Times Cited:24
Deposited By:Plant Science
Deposited On:2014-12-05
Last Modified:2017-11-02
Downloads:253 View Download Statistics

Repository Staff Only: item control page