Isolation of gibberellins A3, A4 and A7 from Pinus attenuata pollen |
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Authors: | Aniela Kamienska Richard C Durley Richard P Pharis |
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Institution: | Department of Biology, University of Calgary, Calgary, Alberta T2N 1N4, Canada |
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Abstract: | Three native gibberellins of Pinus attenuata pollen, GA3, GA4 and GA7 have been characterized by GC-MS and a fourth, less polar, GA with chromatographic characteristics similar to GA9 was shown to be present. At least two other as yet unidentified, less polar GA-like substances are also present in the dormant and/or germinating pollen. The concentration of the GA9-like substance, and of GA4 and GA7, decreases during germination, while peaks of biological activity of a more polar nature increase. The most predominant of the polar peaks present 15 hr after germination was GA3. |
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Keywords: | Pinaceae pollen gibberellins isolation GC-MS |
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