PLANT PHYSIOLOGY · 1976 · 15 citations · 0 references
Life SciencesPlant BiologyPlant SciencesPlant BiochemistryPlant Hormone BiologyPlant PhysiologyGibberellin BiologyPollen BiologyPollen GerminationGibberellin Bioactive FormsGibberellin BiosynthesisGibberellin CatabolismGibberellin Diterpenoid PathwayGibberellin MetabolismGibberellin PrecursorsMetabolic Activity Of PollenPollen Metabolism During Germination
Gibberellins A(1) and A(34) (possibly A(2)) were found as products of metabolism of 1,2-[(3)H]GA(4) during germination of Pinus attenuata pollen. The conversion from GA(4) to GA(1) and GA(34) occurred as hydroxylations at atoms C-13 and C-2 of the ent-gibberellane skeleton, respectively. Percentage interconversion of the GA(4) absorbed was in the range of 0.15 to 0.43% for GA(1) and 1.54 to 3.22% for GA(34). Identifications were made on a gas-liquid chromatograph with radioactive monitoring by comparison with standards.