Shinjiro Yamaguchi

TL;DR: It is proposed that strigolactones act as a new hormone class—or their biosynthetic precursors—in regulating above-ground plant architecture, and also have a function in underground communication with other neighbouring organisms.

TL;DR: Current understanding of the GA biosynthesis and deactivation pathways in plants and fungi is summarized, and how GA concentrations in plant tissues are regulated during development and in response to environmental stimuli is discussed.

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: Evidence is provided that DWARF14 (D14) inhibits rice tillering and may act as a new compo-nent of the strigolactone-dependent branching inhibition pathway and it is proposed that D14 functions downstream of striglactone synthesis, as a component of hormone signaling or as an enzyme that participates in the conversion of strIGolactones to the bioactive form.

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.