Gibberellins are a family of diterpenoids

Growth, Seed germination, Promote flowering, Promote sex ,determination in some species, Promote fruit growth. Only some GAs are biologically active (GA4 major active in Arabidopsis). Gibberellins regulate growth. Discovered in Japan by Eiichi Kurasawa. Genes that control GA, are green revolution genes. Other green revolution genes affect DELLA proteins. GA present: Degradation to DELLA proteins. All0ows growth promoting genes.