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. 1982 Mar;69(3):660–662. doi: 10.1104/pp.69.3.660

Effect of Photoperiod on Metabolism of [3H] Gibberellins A1, 3-epi-A1, and A20 in Agrostemma githago L. 1

M George Jones 1,2,2, Jan A D Zeevaart 1,2,3
PMCID: PMC426274  PMID: 16662269

Abstract

To determine whether daylength influences the rate of metabolism of gibberellins (GAs) in the long-day (LD) rosette plant Agrostemma githago L., [3H]GA20 and [3H]GA1 were applied under short day (SD) and LD. Both were metabolized faster under LD than under SD. [3H]GA20 was metabolized to a compound chromatographically identical to 3-epi-GA1. [3H]GA1 was metabolized to two acidic compounds, the major metabolite having chromatographic properties similar to, but not identical with GA8. [3H]3-epi-GA1 applied to plants under LD was metabolized much more slowly than was [3H]GA1, and formed a very polar metabolite which did not partition into ethyl acetate at pH 2.5. Very polar metabolites were also formed after the feeds of [3H]GA20 and [3H]GA1. It was not possible to characterize these very polar compounds further because of their apparent instability. The results obtained suggest that in Agrostemma GA20 is the precursor of 3-epi-GA1, but there is at present no evidence indicating the precursor of GA1.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Davies L. J., Rappaport L. Metabolism of Tritiated Gibberellins in d-5 Dward Maize: II. [H]Gibberellin A(1), [H]Gibberellin A(3), and Related Compounds. Plant Physiol. 1975 Jul;56(1):60–66. doi: 10.1104/pp.56.1.60. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Jones M. G., Metzger J. D., Zeevaart J. A. Fractionation of gibberellins in plant extracts by reverse phase high performance liquid chromatography. Plant Physiol. 1980 Feb;65(2):218–221. doi: 10.1104/pp.65.2.218. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Lance B., Durley R. C., Reid D. M., Thorpe T. A., Pharis R. P. Metabolism of [H]Gibberellin A(20) in Light- and Dark-grown Tobacco Callus Cultures. Plant Physiol. 1976 Sep;58(3):387–392. doi: 10.1104/pp.58.3.387. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Metzger J. D., Zeevaart J. A. Photoperiodic control of gibberellin metabolism in spinach. Plant Physiol. 1982 Feb;69(2):287–291. doi: 10.1104/pp.69.2.287. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Rudich J., Sell H. M., Baker L. R. Transport and metabolism of h-gibberellin a(1) in dioecious cucumber seedlings. Plant Physiol. 1976 May;57(5):734–737. doi: 10.1104/pp.57.5.734. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Stolp C. F., Nadeau R., Rappaport L. Effect of Abscisic Acid on Uptake and Metabolism of [H]Gibberellin A(1) and [H]Pseudogibberellin A(1) by Barley Half-seeds. Plant Physiol. 1973 Dec;52(6):546–548. doi: 10.1104/pp.52.6.546. [DOI] [PMC free article] [PubMed] [Google Scholar]

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