Gibberellin Biosynthesis in Bambusoideae

Abstract

Gibberellin A₈ (GA₈); GA₁₇, GA₂₉, GA₄₄, and GA₅₃ were identified from the shoots of Phyllostachys edulis, together with previously identified GA₁, GA₁₉, and GA₂₀, and the occurrence of a 2β-hydroxy-GA₅₃-like compound was suggested. An experiment on shoots of the bamboo species confirmed the metabolism from GA₁₂-aldehyde to GA₁₂ and GA₅₃ in P. bambusoides, and from GA₁₂-aldehyde to GA₁₂ and GA₁₂ to GA₅₃ in Sasa kurilensis. These findings strongly suggest the participation of the early-13-hydroxylation pathway for gibberellin biosynthesis in the shoots of Bambusoideae.