32 research outputs found
Caracterização da transmissão do vírus do mosaico-das-nervuras do algodoeiro pelo pulgão Aphis gossyphii com relação à persistência e ao tempo necessário para inoculação
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Enzyme-linked immunosorbent assays for study of serological relationships and detection of three luteoviruses
No full textA simple test for evaluation of transmission efficiency of barley yellow dwarf virus by aphids
No full textThe incidence of barley yellow dwarf virus isolates in perennial ryegrass (Lolium perenne) in south-western Victoria
No full textEndophytic fungus decreases plant virus infections in meadow ryegrass (Lolium pratense)
No full textWe studied the effects of fungal endophyte infection of meadow ryegrass (Lolium pratense=Festuca pratensis) on the frequency of the barley yellow dwarf virus (BYDV). The virus is transferred by aphids, which may be deterred by endophyte-origin alkaloids within the plant. In our experiment, we released viruliferous aphid vectors on endophyte-infected and endophyte-free plants in a common garden. The number of aphids and the percentage of BYDV infections were lower in endophyte-infected plants compared to endophyte-free plants, indicating that endophyte infection may protect meadow ryegrass from BYDV infections
