Skip to main content
PMC home page
Plant Physiology logoLink to Plant Physiology
. 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.

Full text

PDF
662

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]

Articles from Plant Physiology are provided here courtesy of Oxford University Press

RESOURCES