Ayuko Kuwahara

TL;DR: In situ hybridization analysis demonstrated that the expression of GA-responsive genes is not restricted to the predicted site of GA biosynthesis, suggesting that GA itself, or GA signals, is transmitted across different cell types during Arabidopsis seed germination.

TL;DR: It is found that a subset of gibberellin biosynthesis genes were upregulated in response to low temperature, resulting in an increase in the level of bioactive GAs and transcript abundance of GA-inducible genes in imbibed Arabidopsis thaliana seeds.

TL;DR: It is shown that the cyp707a1 mutant accumulated ABA to higher levels in dry seeds than the cyP707a2 mutant, and each CYP707A gene plays a distinct role during seed development and postgermination growth.

TL;DR: Spatial expression patterns of the AtABA2 and AAO3 genes, responsible for last two steps of ABA biosynthesis, were distinct from that of the GA biosynthesis gene, AtGA3ox2, in both imbibed and developing seeds, suggesting that biosynthesis of A BA and GA in seeds occurs in different cell types.

TL;DR: Using quantitative real-time PCR analysis, it has been shown that each AtGA3ox gene exhibits a unique organ-specific expression pattern, suggesting distinct developmental roles played by individual AtGA2ox members of the Gibberellin 3-oxidase family.