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  • 1
    Electronic Resource
    Electronic Resource
    Effect ofSolanum Glycoalkaloids on Potato Aphid,Macrosiphum euphorbiae (1997)
    Springer
    Journal of chemical ecology 23 (1997), S. 1651-1659 
    Details
    ISSN: 1573-1561
    Keywords: Macrosiphum euphorbiae ; Homoptera (Aphididae) ; Solanum tuberosum ; Solanaceae ; potato ; α-chaconine ; α-solanine ; α-tomatine ; solanidine ; tomatidine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Macrosiphum euphorbiae, also known as the potato aphid, is a potato virus vector, associated with decreased tuber production. Feeding, toxicity, and reproductive effects of the major potato glycoalkaloids (α-chaconine and α-solanine), their common aglycone (solanidine), and a nonpotato glycoalkaloid (α-tomatine) and its aglycone (tomatidine) onM. euphorbiae were studied. As expected, neither α-chaconine nor α-solanine had a strong lethal effect on the aphid, but α-chaconine stimulated feeding at low concentrations. Both aglycones were deterrent and lethal at high concentrations and, like α-chaconine and α-tomatine, they delayed the appearance and decreased the number of nymphs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/B:JOEC.0000006429.14373.91
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of Solanum Glycosides on the Aphid Schizaphis graminum (1999)
    Springer
    Journal of chemical ecology 25 (1999), S. 369-374 
    Details
    ISSN: 1573-1561
    Keywords: Schizaphis graminum ; Aphididae ; aphids ; greenbug ; survival ; glycosides ; glycoalkaloids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1020807131914
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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