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The genetic architecture of flowering time changes in pea from wild to crop


Williams, O and Vander Schoor, JK and Butler, JB and Ridge, S and Sussmilch, FC and Hecht, VFG and Weller, JL, The genetic architecture of flowering time changes in pea from wild to crop, Journal of Experimental Botany pp. erac132. ISSN 0022-0957 (2022) [Refereed Article]

Available from 07 April 2023

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Copyright 2022 the authors.

DOI: doi:10.1093/jxb/erac132


Change in phenology has been an important component in crop evolution, and selection for earlier flowering through a reduction in environmental sensitivity has helped broaden adaptation in many species. Natural variation for flowering in domesticated pea (Pisum sativum L.) has been noted and studied for decades, but there has been no clear account of change relative to its wild progenitor. Here we examined the genetic control of differences in flowering time between wild P. sativum ssp. humile and a typical late-flowering photoperiodic P. s. sativum accession in a recombinant inbred population under long and short photoperiods. Our results confirm the importance of the major photoperiod sensitivity locus Hr/PsELF3a and identify two other loci on chromosomes 1 (DTF1) and 3 (DTF3) that contribute to earlier flowering in the domesticated line under both photoperiods. The domesticated allele at a fourth locus on chromosome 6 (DTF6) delays flowering under long days only. Map positions, inheritance patterns, and expression analyses in near-isogenic comparisons imply that DTF1, DTF3 and DTF6 represent gain-of-function alleles of the florigen/antiflorigen genes FTa3, FTa1 and TFL1c/LF, respectively. This echoes similar variation in chickpea and lentil, and suggests a conserved route to reduced photoperiod sensitivity and early phenology in temperate pulses.

Item Details

Item Type:Refereed Article
Keywords:flowering time, adaptation, photoperiod, florigen, FT genes, genetic, legume, pea, Pisum, QTL analysis, phenology
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:Williams, O (Mr Owen Williams)
UTAS Author:Vander Schoor, JK (Mrs Jacqueline Vander Schoor)
UTAS Author:Butler, JB (Dr Jakob Butler)
UTAS Author:Ridge, S (Mr Stephen Ridge)
UTAS Author:Sussmilch, FC (Dr Frances Sussmilch)
UTAS Author:Hecht, VFG (Dr Valerie Hecht)
UTAS Author:Weller, JL (Associate Professor Jim Weller)
ID Code:149702
Year Published:2022
Deposited By:Plant Science
Deposited On:2022-04-07
Last Modified:2022-05-04

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