Conjugation of Allelochemicals by Plants Enzymatic Glucosylation of Salicylic Acid by Avena sativa
Abstract
Plants have the ability to conjugate endogenous compounds to most allelochemicals absorbed from the environment. Conjugation reactions are thought to be important for detoxication of secondary products such as allelochemicals because conjugation increases the water solubility and decreases the chemical reactivity of the parent compound. Glucosylation, conjugation with glucose, is one of the most common conjugation reactions in plants. Numerous glucosyltransferase enzymes have been extracted from plants. Uridine diphosphate glucose (UDPG) is the preferred glucose donor for these enzymes. The range of secondary products a particular glucosyltransferase can conjugate has not been determined nor has the ability of allelochemicals to induce different glucosyltransferases in plants. Roots of Avena sativa conjugated glucose to salicylic acid, a phenolic" acid, when the allelochemical was present in solution bathing the tissue. The tissue's capacity to conjugate salicylic acid increased with time suggesting induction of glucosyltransferase activity in the tissue. A glucosyltransferase that transfers glucose from UDPG to the phenolic hydroxyl of salicylic acid was purified about 54-fold.
Additional Information
© 1987 American Chemical Society. Received January 21, 1986. Published in print 8 January 1987. Research supported by the College of Agricultural and Life Sciences, University of Wisconsin, Madison and SEA/USDA Grant 85-CRCR-1-1572 from the Competitive Research Grants Program.Additional details
- Eprint ID
- 85624
- Resolver ID
- CaltechAUTHORS:20180405-071623555
- University of Wisconsin-Madison
- 85-CRCR-1-1572
- U.S. Department of Agriculture
- Created
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2018-04-05Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field
- Series Name
- ACS Symposium Series
- Series Volume or Issue Number
- 330