Biological control by parasitoids does not enhance pepino mosaic virus transmission
(2016) European Journal of Plant Pathology — Vol. 145, n° 2, p. 493-499 (2016)
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- Abstract
- Biological control by natural enemies could enhance pathogen transmission particularly in systems with simple mechanical transmission. To understand potential risk of pathogen dissemination, experiments were conducted to investigate ability of the green peach aphid, Myzus persicae, and its biological control agent, the parasitoid Aphidius colemani, to externally carry and transmit Pepino mosaic virus (PepMV) to tomato. On average, 53 % of the aphids and 78 % of the parasitoids carried the virus on the surface of their bodies after 2 h of contact. After 72 h of contact, at least 90 % of both insects were contaminated. Virus transmission was observed with M. persicae that were in contact with infected plants for 48 h (10 %) and 72 h (25 %), but no transmission was recorded with contact periods of 8 h or 24 h. Aphidius parasitoids failed to disseminate virus to healthy plants during transmission experiments with naturally and artificially infected parasitoids, despite testing more than 3000 individuals.
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Citations
Noel, P., Hance, T., Muratori, F., & Bragard, C. (2016). Biological control by parasitoids does not enhance pepino mosaic virus transmission. European Journal of Plant Pathology, 145(2), 493-499. https://doi.org/10.1007/s10658-015-0838-x (Original work published 2016)