Antifeedant activity of fungal isolates of the genus Trichoderma on two species of aphids: preliminary results - Fungal isolates of the genus Trichoderma were tested on aphids for the production of metabolites with antifeedant activity. The tests revealed a different sensitivity of the wingless and winged morphs of Schizaphis graminum towards the fungal cultures applied. Indeed, some isolates proved to be repellent for the winged but not for the wingless morphs, suggesting that the capability to interact with fungal metabolites is associated with the secondary rhinaria that are located on the antenna of the winged and absent on the wingless morphs. Wingless morphs of the species Megoura viciae bearing antennae with secondary rhinaria were also sensitive to the fungal isolate tested.
Attività “antifeedant” di isolati fungini del genere Trichoderma nei confronti di due specie di afidi: risultati preliminari / Ganassi, Sonia; Altomare, C; Pagliai, Anna Maria; Logrieco, A; Sabatini, Maria Agnese. - STAMPA. - (2002), pp. 1435-1439. (Intervento presentato al convegno XIX Congr. Naz. It. Entomologia tenutosi a Catania nel 10-15 giugno 2002).