Abstract
The native gibberellins (GAs) of various organs of the Avena plant were analyzed by bioassay and gas chromatography-mass spectrometry (GC-MS) after silicic acid partition column chromatography. The major GA of the inflorescence was identified as GA3 by GC-MS, and this GA also forms the major component of the nodes, p-1 internode, and roots as determined by GLC or chromatography/bioassay. The inflorescence and nodes are the major sources of native GAs, the last two leaves, internode, and roots having significantly lower amounts of GA-like substances. In the internode, less polar GAs predominated at the lag stage of development, whereas by the log and plateau stages, the more polar GAs increased significantly.
Since less polar GAs are early in oxidative interconversion sequences, this finding indicates sequential conversion to more polar and probably more active GAs, during log phase growth of the p-1 internode.
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Selected References
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- Kaufman P. B., Ghosheh N. S., Lacroix J. D., Soni S. L., Ikuma H. Regulation of invertase levels in Avena stem segments by gibberellic Acid, sucrose, glucose, and fructose. Plant Physiol. 1973 Sep;52(3):221–228. doi: 10.1104/pp.52.3.221. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kaufman P. B., Ghosheh N., Ikuma H. Promotion of growth and invertase activity by gibberellic Acid in developing Avena internodes. Plant Physiol. 1968 Jan;43(1):29–34. doi: 10.1104/pp.43.1.29. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Railton I. D., Durley R. C., Pharis R. P. Metabolism of Tritiated Gibberellin A(9) by Shoots of Dark-grown Dwarf Pea, cv. Meteor. Plant Physiol. 1974 Jul;54(1):6–12. doi: 10.1104/pp.54.1.6. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Reeve D. R., Crozier A. Metabolism of H-Gibberellin A(1) and H-Gibberellin A(4) by Phaseolus coccineus Seedlings. Plant Physiol. 1975 Jan;55(1):42–44. doi: 10.1104/pp.55.1.42. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rugh R., Wohlfromm M. Previous reproductive history and the susceptibility of x-ray-induced congenital anomalies. Nature. 1966 May 28;210(5039):969–970. doi: 10.1038/210969b0. [DOI] [PubMed] [Google Scholar]