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Title: LEAFY target genes reveal a link between flower development and biotic stimulus response (I)      
keywords:
Epigenomics
ID:
PRJNA143133
description:
The transition from vegetative growth to flower formation is critical for the survival of flowering plants. The plant-specific transcription factor LEAFY (LFY) has central, evolutionarily conserved roles in this process, both in the formation of the first flower and later in floral patterning. We performed genome-wide binding and expression studies to elucidate the molecular mechanisms by which LFY executes these roles. Our study reveals that LFY directs an intricate regulatory network in control of floral homeotic gene expression and, unexpectedly, controls the expression of genes regulating the response to external stimuli in Arabidopsis. We further show that LFY dampens responses to a bacterial MAMP (microbe-associated molecular pattern) and to pathogen challenge. Our findings suggest a molecular mechanism for the coordination of reproductive stage development and disease response programs in plants. Regulation of these distinct survival programs by a single transcription factor may ensure optimal allocation of plant resources for reproductive fitness. Genome binding/occupancy profiling by genome tiling array used to identity genes bound by induced LFY in 9-day-old seedlings. Overall design: ChIP-chip of 9-day-old 35S::LFY-GR dexamethasone-treated seedlings using a LFY antibody. Three biological replicate immunoprecipated samples were compared to their corresponding genomic input DNA (taken prior to immunoprecipitation). As a negative control, three biological replicates of 9-day-old WT (Landsberg erecta) IP and their corresponding Input samples were also hybridized (9-day-old Ler seedlings express very low levels of LFY).
accesstypes:
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landingpage: http://www.ncbi.nlm.nih.gov/bioproject/PRJNA143133
authentication:
none
authorization:
none
ID:
pmid:21497757
dateReleased:
05-11-2011
name:
Arabidopsis thaliana
ncbiID:
ncbitax:3702
abbreviation:
NCBI
homePage: http://www.ncbi.nlm.nih.gov
ID:
SCR:006472
name:
National Center for Biotechnology Information
homePage: http://www.ncbi.nlm.nih.gov/bioproject
ID:
SCR:004801
name:
NCBI BioProject