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Physiology and Biochemistry

Effects of Exogenous Auxins on Tomato Tissue Infected With the Citrus Exocortis Viroid. N. Duran -Vila, Department of Plant Pathology, University of California, Riverside 92521; J. S. Semancik, Department of Plant Pathology, University of California, Riverside 92521. Phytopathology 72:777-781. Accepted for publication 21 October 1981. Copyright 1982 The American Phytopathological Society. DOI: 10.1094/Phyto-72-777.

Leaf disks, stem segments, and callus cultures from healthy and CEV-infected plants of a hybrid of Lycopersicon esculentum and Lycopersicon peruvianum were cultured in vitro under different hormone regimes. The differences in response observed when the medium was supplemented with auxins, alone or in combination with cytokinins, suggest that the inability of CEV-infected cells to respond to auxins might be involved in the development of the pathogenic syndrome caused by CEV.