title: VASCULAR PLANT ONE-ZINC FINGER1 and VOZ2 repress the FLOWERING LOCUS C clade members to control flowering time in Arabidopsis.
abstract: Floral transition is regulated by environmental and endogenous signals. Previously, we identified VASCULAR PLANT ONE-ZINC FINGER1 (VOZ1) and VOZ2 as phytochrome B-interacting factors. VOZ1 and VOZ2 redundantly promote flowering and have pivotal roles in the downregulation of FLOWERING LOCUS C (FLC), a central repressor of flowering in Arabidopsis. Here, we showed that the late-flowering phenotypes of the voz1 voz2 mutant were suppressed by vernalization in the Columbia and FRIGIDA (FRI)-containing accessions, which indicates that the late-flowering phenotype of voz1 voz2 mutants was caused by upregulation of FLC. We also showed that the other FLC clade members, MADS AFFECTING FLOWERING (MAF) genes, were also a downstream target of VOZ1 and VOZ2 as their expression levels were also increased in the voz1 voz2 mutant. Our results suggest that the FLC clade genes integrate signals from VOZ1/VOZ2 and vernalization to regulate flowering.
authors.affiliation: a Graduate School of Biostudies , Kyoto University , Kyoto , Japan.
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Yasui
authors.forename: Takayuki
authors.initials: T
authors.lastname: Kohchi
mesh_terms: D017360:Arabidopsis / Q000235:genetics* / Q000254:growth & development*; D029681:Arabidopsis Proteins / Q000187:drug effects* / Q000235:genetics* / Q000378:metabolism*; D035264:Flowers / Q000235:genetics*; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant; D026161:MADS Domain Proteins / Q000235:genetics* / Q000378:metabolism*; D009154:Mutation; D016601:RNA-Binding Proteins / Q000187:drug effects*; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism*
chemical_list: D029681:Arabidopsis Proteins; C418902:At5g10140 protein, Arabidopsis; C106535:Flowering time control protein FCA, Arabidopsis; D026161:MADS Domain Proteins; D016601:RNA-Binding Proteins; D014157:Transcription Factors; C492827:VOZ1 protein, Arabidopsis; C492828:VOZ2 protein, Arabidopsis
keywords: Arabidopsis thaliana; FLOWERING LOCUS C (FLC); VASCULAR PLANT ONE-ZINC FINGER (VOZ); flowering; phytochrome B (phyB)