Plant Physiol. Drug Metab Dispos
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Plant Physiology 54:706-708 (1974)
© 1974 American Society of Plant Biologists

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Articles

Proteinase Inhibitor-inducing Factor in Plant Leaves

A Phylogenetic Survey 1,2

Douglas McFarland and Clarence A. Ryan3

a Department of Agricultural Chemistry, Washington State University, Pullman, Washington 99163

Thirty-nine plant species representing 20 families from the four major divisions of plants were surveyed for the presence of proteinase inhibitor-inducing factor activity in leaves or other tissues. Tissue juices were assayed for their capacity to induce accumulation of proteinase inhibitor I in excised tomato (Lycopersico esculentum) leaves. In tissues of only 2 of the 39 species was proteinase inhibitor-inducing factor-like activity not found. The activity was absent in cabbage leaves and celery stalks. Fruiting bodies from one of three fungi genera assayed contained exceptionally large quantities of proteinase inhibitor-inducing factor-like activity. Extracts from Agraricus campestris fruiting bodies contained over 20 times more activity than tomato leaf juice. The survey confirms that substances with proteinase inhibitor-inducing factor-like activity are widespread in the plant kingdom.

3 Career Development Awardee of the United States Public Health Service.

1 This work was supported in part by United States Public Health Service Grant 2-K3-GM 17059, the United States Department of Agriculture Cooperative States Research Service Grant 316-15-60, and National Science Foundation Grant GB 37972. College of Agriculture Research Center, Scientific Paper No. 4242, Project 1791.

2 Dedicated to the memory of Milton Zucker, a scientist, a colleague, and a friend.




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C. R. CARROLL and C. A. HOFFMAN
Chemical Feeding Deterrent Mobilized in Response to Insect Herbivory and Counteradaptation by Epilachna tredecimnotata
Science, July 18, 1980; 209(4454): 414 - 416.
[Abstract] [PDF]


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Copyright © 1974 by the American Society of Plant Biologists