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  • 1
    Electronic Resource
    Electronic Resource
    DIMBOA Glucoside, a Wheat Chemical Defense, Affects Host Acceptance and Suitability of Sitobion avenae to the Cereal Aphid Parasitoid Aphidius rhopalosiphi (1998)
    Springer
    Journal of chemical ecology 24 (1998), S. 371-381 
    Details
    ISSN: 1573-1561
    Keywords: Tritrophic interaction ; aphid ; Sitobion avenae ; parasitoid ; Aphidius rhopalosiphi ; oviposition ; defensive behavior ; DIMBOA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The influence of hydroxamic acids (Hx), plant secondary metabolites associated with aphid resistance in wheat, on the host acceptance and suitability of the aphid Sitobion avenae to the cereal aphid parasitoid Aphidius rhopalosiphi was evaluated. Aphids showed a reduction in mean relative growth rate and in body size in the wheat cultivar with higher Hx level. Reduction in aphid size was related to a decreased success in avoiding parasitoid oviposition. A minor increase in A. rhopalosiphi developmental time was observed in aphids feeding on the higher Hx cultivar. Experiments with different concentrations of DIMBOA glucoside, the main Hx in wheat, in artificial diets showed an increase in parasitoid developmental time at the highest concentration, with no change in other performance variables. The evidence is discussed in relation to the compatible utilization of host-plant resistance and biological control in integrated pest management.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022592711140
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of Dimboa, a Hydroxamic Acid from Cereals, on Peroxisomal and Mitochondrial Enzymes from Aphids: Evidence for the Presence of Peroxisomes in Aphids (1999)
    Springer
    Journal of chemical ecology 25 (1999), S. 2465-2475 
    Details
    ISSN: 1573-1561
    Keywords: Sitobion avenae ; Aphididae ; aphids ; hydroxamic acids ; DIMBOA ; catalase ; cytochrome c oxidase ; peroxisomes ; mitochondria ; xenobiotics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract 2,4-Dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA), a hydroxamic acid involved in the resistance of cereals to aphids, was administered to adult individuals of the aphid Sitobion avenae in artificial diets. Effects on the cellular metabolism were inferred from the evaluation of several organelle marker enzymes. Catalase from peroxisomes and cytochrome c oxidase from mitochondria increased their activities about twofold when aphids were fed with 2 mM DIMBOA. The role of these enzymes in the metabolizing of xenobiotics by aphids is discussed. Biochemical and cytochemical evidences for the presence of peroxisomes in aphids are reported here for the first time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1020870023736
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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