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Science 6 February 1987:
Vol. 235. no. 4789, pp. 678 - 680
DOI: 10.1126/science.235.4789.678
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Articles

Induced Resistance and Interspecific Competition Between Spider Mites and a Vascular Wilt Fungus

RICHARD KARBAN 1, RODNEY ADAMCHAK 1, and WILLIAM C. SCHNATHORST 2

1 Deparment of Entomology, University of California, Davis, CA 95616.
2 Department of Plant Pathology, University of California, Davis, CA 95616.

The fungal pathogen Verticillium dabliae was less likely to cause symptoms of verticillium wilt on cotton seedlings that had been previously exposed to spider mites than on unexposed cotton seedlings. Conversely, populations of the spider mite Tetranychus urticae grew less rapidly on seedlings that had been inoculated with V. dabliae than on uninoculated controls. Changes caused by pathogen or herbivore attack reduced the suitability of the host plant to a diversity of organisms. This result suggests that highly unrelated organisms that share a host plant may interact strongly.

Submitted on August 28, 1986
Accepted on November 5, 1986


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Induced Responses to Herbivory and Increased Plant Performance.
A. A. Agrawal (1998)
Science 279, 1201-1202
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Science. ISSN 0036-8075 (print), 1095-9203 (online)