Functional alleles of the flowering time regulator FRIGIDA in the Brassica oleracea genome.

BMC Plant Biology
Judith A IrwinCaroline Dean

Abstract

Plants adopt different reproductive strategies as an adaptation to growth in a range of climates. In Arabidopsis thaliana FRIGIDA (FRI) confers a vernalization requirement and thus winter annual habit by increasing the expression of the MADS box transcriptional repressor FLOWERING LOCUS C (FLC). Variation at FRI plays a major role in A. thaliana life history strategy, as independent loss-of-function alleles that result in a rapid-cycling habit in different accessions, appear to have evolved many times. The aim of this study was to identify and characterize orthologues of FRI in Brassica oleracea. We describe the characterization of FRI from Brassica oleracea and identify the two B. oleracea FRI orthologues (BolC.FRI.a and BolC.FRI.b). These show extensive amino acid conservation in the central and C-terminal regions to FRI from other Brassicaceae, including A. thaliana, but have a diverged N-terminus. The genes map to two of the three regions of B. oleracea chromosomes syntenic to part of A. thaliana chromosome 5 suggesting that one of the FRI copies has been lost since the ancient triplication event that formed the B. oleracea genome. This genomic position is not syntenic with FRI in A. thaliana and comparative analysis reveal...Continue Reading

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Citations

Jan 13, 2016·Molecular Ecology·Michael W HolmesMichael W Nachman
Mar 20, 2016·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Yaser HasanRalf Uptmoor
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Apr 17, 2015·American Journal of Botany·Jannice Friedman, Matthew J Rubin
Feb 12, 2020·International Journal of Molecular Sciences·Weiwei ChenGuolu Liang
Sep 1, 2012·Journal of Cell Science·Jie SongCaroline Dean

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Datasets Mentioned

BETA
JN191450
JN191392
JN191394
191448

Methods Mentioned

BETA
PCR

Software Mentioned

AlignX
Joinmap

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