biologia plantarum

International journal on Plant Life established by Bohumil Nìmec in 1959

Biologia plantarum 27:231-236, 1985 | DOI: 10.1007/BF02902167

In vitro glucosylation of gibberellins

G. Sembdner1, H. -D. Knöfel1, Evelin Schwarzkopf1, H. W. Liebisch1
1 Institute of Plant Biochemistry, Academy of Sciences of the GDR, Weinberg

In maturing fruits ofPhaseolus coccineus a soluble glucosyltransferase activity occurs which converts gibberellins into their O-glucosides. The enzyme glucosylates GA3 and structurally closely related gibberellins (GA7 and GA30) to their 3-O-glucosides by transfer of glucose preferentially from UDP-glucose.
From cell suspension cultures ofLycopersicon peruvianum cytosolic glucosyltransferases were isolated which in the presence of UDP-glucose converted GA7 and GA9 to the corresponding glucosyl esters. In both cases numerous other gibberellins failed to serve as substrates. Thus, the enzymes are UDP-glucose: gibberellin glucosyltransferases of considerable substrate specificity.

Published: March 1, 1985  Show citation

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Sembdner, G., Knöfel, H.-D., Schwarzkopf, E., & Liebisch, H.W. (1985). In vitro glucosylation of gibberellins. Biologia plantarum, 27(2-3), 231-236. doi: 10.1007/BF02902167
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