Effect of Solanum glycosides on the aphid Schizaphis graminum
Author
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Soule, Silvia
Author
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Güntner, Carlos
Author
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Vázquez, Alvaro
Author
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Argandoña, Victor H.
Author
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Ferreira, Fernando
Author
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Moyna, Patrick
Admission date
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2018-12-20T14:10:42Z
Available date
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2018-12-20T14:10:42Z
Publication date
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1999
Cita de ítem
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Journal of Chemical Ecology, Volumen 25, Issue 2, 2018, Pages 369-374
Identifier
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00980331
Identifier
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10.1023/A:1020807131914
Identifier
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https://repositorio.uchile.cl/handle/2250/154394
Abstract
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Common Solanum glycosides were tested against a non-Solanum pest, the greenbug, Schizaphis graminum, fed by artificial diet supplemented with the tested compounds. In contrast with the potato aphid Macrosiphum euphorbiae, S. graminum is sensitive to both potato and tomato glycoalkaloids, as well as to all the different Solanum steroidal glycosides tested. S. graminum was less sensitive to glycoalkaloids than to the steroidal glycosides. Laxumin A (LC50 4.3 μM) and laxumin B (LC50 6.1 μM), isolated from Solanum laxum, were the most active of the tested compounds. The different sensitivity of both aphids against Solanum glycosides could be related to a possible adaptation of the insects to their host plants secondary metabolites.