Fungal isolates of two species of the genus Trichoderma were evaluated as antifeedant compounds towards winged and wingless morphs of the aphid Schizaphis graminum and wingless morph of Megoura viciae. The three tested isolates resulted repellent towards winged morph of S. graminum and wingless of M. viciae; only T. citrinoviride proved to be repellent towards wingless of S. graminum. Electrophysiological studies showed that the structures involved in the perception of the fungal metabolites are located on the aphid tarsomeres supporting the hypothesis that at least part of the fungal metabolites responsible for the repellent effect are water soluble compounds.
Laboratory evaluation of antifeedant activity of Trichoderma spp. isolates in aphid biocontrol / Ganassi, Sonia; Logrieco, A; DE CRISTOFARO, A; Sabatini, Maria Agnese. - In: IOBC/WPRS BULLETIN. - ISSN 1027-3115. - STAMPA. - 27:(2004), pp. 23-26.
Laboratory evaluation of antifeedant activity of Trichoderma spp. isolates in aphid biocontrol.
GANASSI, Sonia;SABATINI, Maria Agnese
2004
Abstract
Fungal isolates of two species of the genus Trichoderma were evaluated as antifeedant compounds towards winged and wingless morphs of the aphid Schizaphis graminum and wingless morph of Megoura viciae. The three tested isolates resulted repellent towards winged morph of S. graminum and wingless of M. viciae; only T. citrinoviride proved to be repellent towards wingless of S. graminum. Electrophysiological studies showed that the structures involved in the perception of the fungal metabolites are located on the aphid tarsomeres supporting the hypothesis that at least part of the fungal metabolites responsible for the repellent effect are water soluble compounds.Pubblicazioni consigliate
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