Wound-Induced Proteinase Inhibitor in Plant Leaves: A Possible Defense Mechanism against Insects
- 18 February 1972
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 175 (4023) , 776-777
- https://doi.org/10.1126/science.175.4023.776
Abstract
Wounding of the leaves of potato or tomato plants by adult Colorado potato beetles, or their larvae, induces a rapid accumulation of a proteinase inhibitor throughout the plants' tissues that are exposed to air. This effect of insect damage can be simulated by mechanically wounding the leaves. The transport of a factor out of damaged leaves takes place rapidly after the wound is inflicted and the levels of proteinase inhibitor, in both damaged and adjacent leaves, rises strikingly within a few hours. The rapid accumulation of a powerful inhibitor of major intestinal proteinases of animals in response to wounding of the leaves is probably a defense mechanism.Keywords
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