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• W2534489083 abstract "The Arabidopsis FLOWERING LOCUS T (FT) gene, a member of the phosphatidylethanolamine binding protein (PEBP) family, is a major controller of flowering in response to photoperiod, vernalization and light quality. In legumes, FT evolved into three, functionally diversified clades, FTa, FTb and FTc. A milestone achievement in narrow-leafed lupin (Lupinus angustifolius L.) domestication was the loss of vernalization responsiveness at the Ku locus. Recently, one of two existing L. angustifolius homologs of FTc, LanFTc1, was revealed to be the gene underlying Ku. It is the first recorded involvement of an FTc homologue in vernalization. The evolutionary basis of this phenomenon in lupin has not yet been deciphered.Bacterial artificial chromosome (BAC) clones carrying LanFTc1 and LanFTc2 genes were localized in different mitotic chromosomes and constituted sequence-specific landmarks for linkage groups NLL-10 and NLL-17. BAC-derived superscaffolds containing LanFTc genes revealed clear microsyntenic patterns to genome sequences of nine legume species. Superscaffold-1 carrying LanFTc1 aligned to regions encoding one or more FT-like genes whereas superscaffold-2 mapped to a region lacking such a homolog. Comparative mapping of the L. angustifolius genome assembly anchored to linkage map localized superscaffold-1 in the middle of a 15 cM conserved, collinear region. In contrast, superscaffold-2 was found at the edge of a 20 cM syntenic block containing highly disrupted collinearity at the LanFTc2 locus. 118 PEBP-family full-length homologs were identified in 10 legume genomes. Bayesian phylogenetic inference provided novel evidence supporting the hypothesis that whole-genome and tandem duplications contributed to expansion of PEBP-family genes in legumes. Duplicated genes were subjected to strong purifying selection. Promoter analysis of FT genes revealed no statistically significant sequence similarity between duplicated copies; only RE-alpha and CCAAT-box motifs were found at conserved positions and orientations.Numerous lineage-specific duplications occurred during the evolution of legume PEBP-family genes. Whole-genome duplications resulted in the origin of subclades FTa, FTb and FTc and in the multiplication of FTa and FTb copy number. LanFTc1 is located in the region conserved among all main lineages of Papilionoideae. LanFTc1 is a direct descendant of ancestral FTc, whereas LanFTc2 appeared by subsequent duplication." @default.
• W2534489083 created "2016-10-28" @default.
• W2534489083 creator A5024333788 @default.
• W2534489083 creator A5034526507 @default.
• W2534489083 creator A5036333296 @default.
• W2534489083 creator A5044827492 @default.
• W2534489083 creator A5079022908 @default.
• W2534489083 creator A5084688034 @default.
• W2534489083 date "2016-10-21" @default.
• W2534489083 modified "2023-10-15" @default.
• W2534489083 title "Expansion of the phosphatidylethanolamine binding protein family in legumes: a case study of Lupinus angustifolius L. FLOWERING LOCUS T homologs, LanFTc1 and LanFTc2" @default.
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