Three Medicago MtFUL genes have distinct and overlapping expression patterns during vegetative and reproductive development and 35S:MtFULb accelerates flowering and causes a terminal flower phenotype in Arabidopsis

Frontiers in Genetics
Mauren JaudalJoanna Putterill

Abstract

The timing of the transition to flowering is carefully controlled by plants in order to optimize sexual reproduction and the ensuing production of seeds, grains, and fruits. The genetic networks that regulate floral induction are best characterized in the temperate eudicot Arabidopsis in which the florigen gene FT plays a major role in promoting the transition to flowering. Legumes are an important plant group, but less is known about the regulation of their flowering time. In the model legume Medicago truncatula (Medicago), a temperate annual plant like Arabidopsis, flowering is induced by prolonged cold (vernalization) followed by long day lengths (LD). Recent molecular-genetic experiments have revealed that a FT-like gene, MtFTa1, is a central regulator of flowering time in Medicago. Here, we characterize the three Medicago FRUITFULL (FUL) MADS transcription factors, MtFULa, MtFULb, and MtFULc using phylogenetic analyses, gene expression profiling through developmental time courses, and functional analyses in transgenic plants. MtFULa and MtFULb have similarity in sequence and expression profiles under inductive environmental conditions during both vegetative and reproductive development while MtFULc is only up regulated in ...Continue Reading

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Citations

Mar 8, 2016·The Plant Journal : for Cell and Molecular Biology·Mauren JaudalJoanna Putterill
Feb 5, 2019·Journal of Experimental Botany·Victor M Zúñiga-MayoStefan de Folter
Oct 9, 2018·Journal of Experimental Botany·Mauren JaudalJoanna Putterill
Jun 21, 2018·Frontiers in Plant Science·Ben Trevaskis
May 15, 2018·Frontiers in Plant Science·Jared B FudgeRichard C Macknight

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Datasets Mentioned

BETA
ACJ84407

Methods Mentioned

BETA
transgenic
PCR
transgenics

Software Mentioned

Geneious
BLAST
MtFULc
ClustalW

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