Ethylene emission by a deciduous tree,Tilia americana, in response to feeding by introduced basswood thrips,Thrips calcaratus.
Ethylene emission from excised and intact American basswood tissue was increased after seedlings were infested with the bud-feeding herbivore,Thrips calcaratus. Gas chromatographic analysis showed that thrips-infested tissue produced significantly more ethylene than mechanically damaged or control tissue. The possibility that thrips feeding enhances ethylene-mediated stress signals is discussed.
Department of Entomology, University of Wisconsin, 53706, Madison, Wisconsin.
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