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Physiology and Biochemistry

A Survey of Plant Insensitivity to Tentoxin. R. D. Durbin, Research Plant Pathologist, Plant Disease Resistance Research Unit, Agricultural Research Service, U. S. Department of Agriculture, Department of Plant Pathology, University of Wisconsin, Madison, WI 53706; T. F. Uchytil, Research Microbiologist, Plant Disease Resistance Research Unit, Agricultural Research Service, U. S. Department of Agriculture, Department of Plant Pathology, University of Wisconsin, Madison, WI 53706. Phytopathology 67:602-603. Accepted for publication 8 October 1976. Copyright © 1977 The American Phytopathological Society, 3340 Pilot Knob Road, St. Paul, MN 55121. All rights reserved.. DOI: 10.1094/Phyto-67-602.

Insensitivity of seedling growth to tentoxin is widely distributed among plant families. All species of Cruciferae tested were insensitive, whereas all members of Compositae and Umbelliferae were sensitive. Four other families contained varying numbers of insensitive species.

Additional keywords: phytotoxin, chlorosis, Alternaria alternata.