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HUA2 is required for the expression of floral repressors in Arabidopsis thaliana
Author(s) -
Doyle Mark R.,
Bizzell Colleen M.,
Keller Melissa R.,
Michaels Scott D.,
Song Judong,
Noh YooSun,
Amasino Richard M.
Publication year - 2005
Publication title -
the plant journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.058
H-Index - 269
eISSN - 1365-313X
pISSN - 0960-7412
DOI - 10.1111/j.1365-313x.2004.02300.x
Subject(s) - flowering locus c , mutant , biology , repressor , genetics , locus (genetics) , gene , enhancer , arabidopsis , allele , phenotype , gene expression
Summary 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 (L er ) 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 ).