Abstract
Callus and suspension cultures ofAntennaria microphylla (small everlasting) and the noxious weedEuphorbia esula (leafy spurge) can glucosylate benzene-1,4-diol (hydroquinone) to the corresponding monoglucoside, arbutin. HPLC analysis of extracts from callus tissue corroborates the presence of hydroquinone in the cells of small everlasting. Constitutive levels of a UDPG-dependent glucosyltransferase were detected in cell-free extracts of this tissue. Although this detoxification enzyme was induced in leafy spurge suspension culture cells grown in the presence of hydroquinone, the activity was six-fold lower than that measured in small everlasting. Differential ability to detoxify hydroquinone provides a basis for the observed allelopathic interaction between small everlasting and leafy spurge.
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Hogan, M.E., Manners, G.D. Differential allelochemical detoxification mechanism in tissue cultures ofAntennaria microphylla andEuphorbia esula . Journal of Chemical Ecology 17, 167–174 (1991). https://doi.org/10.1007/BF00994430
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DOI: https://doi.org/10.1007/BF00994430