Article
Contribution of gibberellin deactivation by AtGA2ox2 to the suppression of germination of dark-imbibed Arabidopsis thaliana seeds.
Plant & cell physiology - 1 Mar 2007
Yamauchi Yukika, Takeda-Kamiya Noriko, Hanada Atsushi, Ogawa Mikihiro, Kuwahara Ayuko, Seo Mitsunori, Kamiya Yuji, Yamaguchi Shinjiro
Abstract excerpt
Gibberellin levels in imbibed Arabidopsis thaliana seeds are regulated by light via phytochrome, presumably through regulation of gibberellin biosynthesis genes, AtGA3ox1 and AtGA3ox2, and a deactivation gene, AtGA2ox2. Here, we show that a loss-of-function ga2ox2 mutation causes an increase in GA(4) levels and partly suppresses the germination inability during dark imbibition after inactivation of phytochrome....
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