Journal
BIOLOGY LETTERS
Volume 2, Issue 4, Pages 620-623Publisher
ROYAL SOC
DOI: 10.1098/rsbl.2006.0499
Keywords
endophytes; grasses; barley yellow dwarf virus; aphids; multitrophic interactions
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We 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.
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