Gibberellic acid (GA) promotes germination, stem/hypocotyl elongation, and leaf expansion
during seedling development. Using activation-tagging mutagenesis, we identified a
mutation, sob2-D (for suppressor of phytochromeB-4 [phyB-4]# 2 dominant), which
suppresses the long-hypocotyl phenotype of a phyB missense allele, phyB-4. This mutant
phenotype is caused by the overexpression of an APETALA2 transcription factor, SOB2, also
called DRN-like. SOB2/DRN-like transcript is not detectable in wild-type seedling or adult …

A new role for the Arabidopsis AP2 transcription factor, LEAFY PETIOLE, in gibberellin-induced
germination is revealed by the misexpression of a homologous gene, SOB2/DRN-LIKE |
CiNii Research … A new role for the Arabidopsis AP2 transcription factor, LEAFY PETIOLE,
in gibberellin-induced germination is revealed by the misexpression of a homologous gene,
SOB2/DRN-LIKE …