Abstract:
:Enhancers are critical for developmental stage-specific gene expression, but their dynamic regulation in plants remains poorly understood. Here we compare genome-wide localization of H3K27ac, chromatin accessibility and transcriptomic changes during flower development in Arabidopsis. H3K27ac prevalently marks promoter-proximal regions, suggesting that H3K27ac is not a hallmark for enhancers in Arabidopsis. We provide computational and experimental evidence to confirm that distal DNase І hypersensitive sites are predictive of enhancers. The predicted enhancers are highly stage-specific across flower development, significantly associated with SNPs for flowering-related phenotypes, and conserved across crucifer species. Through the integration of genome-wide transcription factor (TF) binding datasets, we find that floral master regulators and stage-specific TFs are largely enriched at developmentally dynamic enhancers. Finally, we show that enhancer clusters and intronic enhancers significantly associate with stage-specific gene regulation by floral master TFs. Our study provides insights into the functional flexibility of enhancers during plant development, as well as hints to annotate plant enhancers.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Yan W,Chen D,Schumacher J,Durantini D,Engelhorn J,Chen M,Carles CC,Kaufmann Kdoi
10.1038/s41467-019-09513-2subject
Has Abstractpub_date
2019-04-12 00:00:00pages
1705issue
1issn
2041-1723pii
10.1038/s41467-019-09513-2journal_volume
10pub_type
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