title: The AGAMOUS-LIKE 20 MADS domain protein integrates floral inductive pathways in Arabidopsis.
abstract: The very late-flowering behavior of Arabidopsis winter-annual ecotypes is conferred mainly by two genes, FRIGIDA (FRI) and FLOWERING LOCUS C (FLC). A MADS-domain gene, AGAMOUS-LIKE 20 (AGL20), was identified as a dominant FRI suppressor in activation tagging mutagenesis. Overexpression of AGL20 suppresses not only the late flowering of plants that have functional FRI and FLC alleles but also the delayed phase transitions during the vegetative stages of plant development. Interestingly, AGL20 expression is positively regulated not only by the redundant vernalization and autonomous pathways of flowering but also by the photoperiod pathway. Our results indicate that AGL20 is an important integrator of three pathways controlling flowering in Arabidopsis.
authors.affiliation: School of Biological Sciences and Research Center for Cell Differentiation, Seoul National University, Seoul, 151-742, Korea.
authors.forename: H
authors.initials: H
authors.lastname: Lee
authors.forename: S S
authors.initials: SS
authors.lastname: Suh
authors.forename: E
authors.initials: E
authors.lastname: Park
authors.forename: E
authors.initials: E
authors.lastname: Cho
authors.forename: J H
authors.initials: JH
authors.lastname: Ahn
authors.forename: S G
authors.initials: SG
authors.lastname: Kim
authors.forename: J S
authors.initials: JS
authors.lastname: Lee
authors.forename: Y M
authors.initials: YM
authors.lastname: Kwon
authors.forename: I
authors.initials: I
authors.lastname: Lee
mesh_terms: D026342:AGAMOUS Protein, Arabidopsis; D017360:Arabidopsis / Q000235:genetics* / Q000254:growth & development; D015152:Blotting, Northern; D004268:DNA-Binding Proteins / Q000235:genetics* / Q000378:metabolism; D018398:Homeodomain Proteins / Q000235:genetics* / Q000378:metabolism; D026161:MADS Domain Proteins; D016254:Mutagenesis, Insertional; D010940:Plant Proteins / Q000235:genetics* / Q000378:metabolism; D011401:Promoter Regions, Genetic; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014157:Transcription Factors / Q000235:genetics* / Q000378:metabolism
chemical_list: D026342:AGAMOUS Protein, Arabidopsis; D004268:DNA-Binding Proteins; D018398:Homeodomain Proteins; D026161:MADS Domain Proteins; D010940:Plant Proteins; D014157:Transcription Factors