期刊
PHYTOCHEMISTRY
卷 69, 期 9, 页码 1795-1813出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2008.03.006
关键词
beta-glucosidase; plant chemical defense; two-component system; bioactivation; cyanogenic glucosides; glucosinolates; avenacosides; benzoxazinoid glucosides; beta-glucosidase aggregating factor; myrosinase binding protein
Some plant secondary metabolites are classified as phytoanticipins. When plant tissue in which they are present is disrupted, the phytoanticipins are bio-activated by the action of beta-glucosidases. These binary systems - two sets of components that when separated are relatively inert - provide plants with an immediate chemical defense against protruding herbivores and pathogens. This review provides an update on our knowledge of the beta-glucosidases involved in activation of the four major classes of phytoanticipins: cyanogenic glucosides, benzoxazinoid glucosides, avenacosides and glucosinolates. New aspects of the role of specific proteins that either control oligomerization of the beta-glucosidases or modulate their product specificity are discussed in an evolutionary perspective. (C) 2008 Elsevier Ltd. All rights reserved.
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