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Physiologia Plantarum
Article . 2015 . Peer-reviewed
License: Wiley Online Library User Agreement
Data sources: Crossref
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Transcriptional programs regulated by both LEAFY and APETALA1 at the time of flower formation

Authors: Cara M, Winter; Nobutoshi, Yamaguchi; Miin-Feng, Wu; Doris, Wagner;

Transcriptional programs regulated by both LEAFY and APETALA1 at the time of flower formation

Abstract

Two key regulators of the switch to flower formation and of flower patterning in Arabidopsis are the plant‐specific helix‐turn‐helix transcription factor LEAFY (LFY) and the MADS box transcription factor APETALA1 (AP1). The interactions between these two transcriptional regulators are complex. AP1 is both a direct target of LFY and can act in parallel with LFY. Available genetic and molecular evidence suggests that LFY and AP1 together orchestrate the switch to flower formation and early events during flower morphogenesis by altering transcriptional programs. However, very little is known about target genes regulated by both transcription factors. Here, we performed a meta‐analysis of public datasets to identify genes that are likely to be regulated by both LFY and AP1. Our analyses uncovered known and novel direct LFY and AP1 targets with a role in the control of onset of flower formation. It also identified additional families of proteins and regulatory pathways that may be under transcriptional control by both transcription factors. In particular, several of these genes are linked to response to hormones, to transport and to development. Finally, we show that the gibberellin catabolism enzyme ELA1, which was recently shown to be important for the timing of the switch to flower formation, is positively feedback‐regulated by AP1. Our study contributes to the elucidation of the regulatory network that leads to formation of a vital plant organ system, the flower.

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Keywords

Arabidopsis Proteins, Reverse Transcriptase Polymerase Chain Reaction, Gene Expression Profiling, Arabidopsis, Gene Expression Regulation, Developmental, MADS Domain Proteins, Flowers, Gene Ontology, Cytochrome P-450 Enzyme System, Gene Expression Regulation, Plant, Morphogenesis, Cluster Analysis, In Situ Hybridization, Transcription Factors

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    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    43
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
43
Top 10%
Top 10%
Top 10%
bronze