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A conserved molecular basis for photoperiod adaptation in two temperate legumes


Weller, JL and Liew, LC and Hecht, VFG and Rajandran, V and Laurie, RE and Ridge, S and Wenden, B and Vander Schoor, JK and Jaminon, O and Blassiau, C and Dalmais, M and Rameau, C and Bendahmane, A and Macknight, RC and Lejeune-Henaut, I, A conserved molecular basis for photoperiod adaptation in two temperate legumes, National Academy of Sciences of The United States of America. Proceedings, 109, (51) pp. 21158-21163. ISSN 0027-8424 (2012) [Refereed Article]

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Copyright Statement

Copyright 2012PNAS

DOI: doi:10.1073/pnas.1207943110


Legumes were among the first plant species to be domesticated, and accompanied cereals in expansion of agriculture from the Fertile Crescent into diverse environments across the Mediterranean basin, Europe, Central Asia, and the Indian subcontinent. Although several recent studies have outlined the molecular basis for domestication and eco-geographic adaptation in the two main cereals from this region, wheat and barley, similar questions remain largely unexplored in their legume counterparts. Here we identify two major loci controlling differences in photoperiod response between wild and domesticated pea, and show that one of these, HIGH RESPONSE TO PHOTOPERIOD (HR), is an ortholog of EARLY FLOWERING 3 (ELF3), a gene involved in circadian clock function. We found that a significant proportion of flowering time variation in global pea germplasm is controlled by HR, with a single, widespread functional variant conferring altered circadian rhythms and the reduced photoperiod response associated with the spring habit. We also present evidence that ELF3 has a similar role in lentil, another major legume crop, with a distinct functional variant contributing to reduced photoperiod response in cultivars widely deployed in short-season environments. Our results identify the factor likely to have permitted the successful prehistoric expansion of legume cultivation to Northern Europe, and define a conserved genetic basis for major adaptive changes in flowering phenology and growth habit in an important crop group.

Item Details

Item Type:Refereed Article
Keywords:legume, photoperiod, adaptation, pea, lentil
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the biological sciences
UTAS Author:Weller, JL (Associate Professor Jim Weller)
UTAS Author:Liew, LC (Miss Lim Chee Liew)
UTAS Author:Hecht, VFG (Dr Valerie Hecht)
UTAS Author:Rajandran, V (Mr Vinodan Rajandran)
UTAS Author:Ridge, S (Mr Stephen Ridge)
UTAS Author:Vander Schoor, JK (Mrs Jacqueline Vander Schoor)
ID Code:81631
Year Published:2012
Funding Support:Australian Research Council (DP0878723)
Web of Science® Times Cited:107
Deposited By:Plant Science
Deposited On:2012-12-19
Last Modified:2013-07-09

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