Arabidopsis Proteins Gibberellins Journal Article Arabidopsis DELLA Research Support, Non-U.S. Gov't C23 Development EC 3.2.1.31 EC 3.6.1.- GTP-Binding Proteins Gibberellin Glucuronidase H10 H50 L33 Ovule Plant Growth Regulators Protein Subunits RACK1 protein, Arabidopsis RGL1 RGL2 Receptors for Activated C Kinase Receptors, Cell Surface Recombinant Fusion Proteins Research Support, U.S. Gov't, Non-P.H.S. development embryo sac gibberellin megagametogenesis