HUA2 is required for the expression of floral repressors in Arabidopsis thaliana.
The HUA2 gene acts as a repressor of floral transition. Lesions in hua2 were identified through a study of natural variation and through two mutant screens. An allele of HUA2 from Landsberg erecta (Ler) contains a premature stop codon and acts as an enhancer of early flowering 4 (elf4) mutants. hua2 single mutants, in the absence of the elf4 lesion, flower earlier than wild type under short days. hua2 mutations partially suppress late flowering in FRIGIDA (FRI )-containing lines, autonomous pathway mutants, and a photoperiod pathway mutant. hua2 mutations suppress late flowering by reducing the expression of several MADS genes that act as floral repressors including FLOWERING LOCUS C (FLC ) and FLOWERING LOCUS M (FLM ).
Doyle
Mark R
MR
Department of Biochemistry, College of Agricultural and Life Sciences, University of Wisconsin, Madison, WI 53706-1544, USA.
Bizzell
Colleen M
CM
Keller
Melissa R
MR
Michaels
Scott D
SD
Song
Judong
J
Noh
Yoo-Sun
YS
Amasino
Richard M
RM
D017360:Arabidopsis / Q000235:genetics* / Q000254:growth & development*; D029681:Arabidopsis Proteins / Q000235:genetics*; D035264:Flowers / Q000254:growth & development*; D018507:Gene Expression Regulation, Developmental / Q000502:physiology*; D018506:Gene Expression Regulation, Plant / Q000502:physiology*; D005801:Genes, Homeobox; D014644:Genetic Variation; D005838:Genotype; D009154:Mutation; D010641:Phenotype; D017440:Photoperiod; D014157:Transcription Factors / Q000235:genetics*
D029681:Arabidopsis Proteins; C118465:HUA2 protein, Arabidopsis; D014157:Transcription Factors