%A P?ivi Lehtonen %A Kari Saikkonen %A Marjo Helander %T Fungal endophytes decrease aphid performance in grasses: effects on virus transmission? %X We examined how endophyte infection and nutrient availability affects the performance of bird-cherry aphid (Rhopalosiphum padi) in meadow fescue (Festuca pratensis). Endophyte infection drastically reduced aphid survival and reproduction in our study. %D 2003 %K fungal endophytes, aphids, meadow fescue %I Nordic Association of Agricultural Scientists %L orgprints11232