1.14.11.13 gibberellin + 2-oxoglutarate + O2 - 1.14.11.13 gibberellin + 2-oxoglutarate + O2 catabolization of biologically active gibberellin 1.14.11.13 gibberellin + 2-oxoglutarate + O2 gibberellin 12 and 53 1.14.11.13 gibberellin + 2-oxoglutarate + O2 + ? - 1.14.11.13 gibberellin 1 + 2-oxoglutarate + O2 inactivates hormonal function of giberellins 1.14.11.13 gibberellin 1 + 2-oxoglutarate + O2 major gibberellin catabolic enzyme 1.14.11.13 gibberellin 1 + 2-oxoglutarate + O2 - 1.14.11.13 gibberellin 1 + 2-oxoglutarate + O2 multifunctional enzyme catalyzing 2beta hydroxylation and 2-ketone formation of the C19-gibberellin substrates giberellin 9, gibberellin 20 gibberellin 1 and gibberellin 4 1.14.11.13 gibberellin 1 + 2-oxoglutarate + O2 inactivation of bioactive gibberellins 1.14.11.13 gibberellin 12 + 2-oxoglutarate + O2 -