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DEK domain‐containing proteins control flowering time in Arabidopsis
Author(s) -
Zong Wei,
Zhao Bo,
Xi Yanpeng,
Bordiya Yogendra,
Mun Hyungwon,
Cerda Nicholas A.,
Kim DongHwan,
Sung Sibum
Publication year - 2021
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/nph.17366
Subject(s) - flowering locus c , chromatin , arabidopsis , biology , rna polymerase ii , repressor , genetics , histone , rna splicing , microbiology and biotechnology , transcription (linguistics) , rna , transcription factor , gene , gene expression , promoter , mutant , linguistics , philosophy
Summary Evolutionarily conserved DEK domain‐containing proteins have been implicated in multiple chromatin‐related processes, mRNA splicing and transcriptional regulation in eukaryotes. Here, we show that two DEK proteins, DEK3 and DEK4, control the floral transition in Arabidopsis . DEK3 and DEK4 directly associate with chromatin of related flowering repressors, FLOWERING LOCUS C ( FLC ), and its two homologs, MADS AFFECTING FLOWERING4 ( MAF4 ) and MAF5 , to promote their expression. The binding of DEK3 and DEK4 to a histone octamer in vivo affects histone modifications at FLC , MAF4 and MAF5 loci. In addition, DEK3 and DEK4 interact with RNA polymerase II and promote the association of RNA polymerase II with FLC , MAF4 and MAF5 chromatin to promote their expression. Our results show that DEK3 and DEK4 directly interact with chromatin to facilitate the transcription of key flowering repressors and thus prevent precocious flowering in Arabidopsis .