INDIRECT TWO-WAY INTERACTIONS BETWEEN APHIDS AND A PATHOGEN ON ROSES
| Autor: | P. Bearez, R. Mouttet, N. Desneux, C. Poncet |
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| Přispěvatelé: | Unité Recherches Intégrées en Horticulture (URIH), Institut National de la Recherche Agronomique (INRA), ProdInra, Migration |
| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Acta Horticulturae 28. International Horticultural Congress on Science and Horticulture for People (IHC2010): International Symposium on Greenhouse 2010 and Soilless Cultivation 28. International Horticultural Congress on Science and Horticulture for People (IHC2010): International Symposium on Greenhouse 2010 and Soilless Cultivation, Aug 2010, Lisbonne, Portugal |
| ISSN: | 2406-6168 0567-7572 |
| DOI: | 10.17660/actahortic.2012.927.26 |
| Popis: | Indirect interactions between plant pathogens and phytophagous pests can occur when infestation by an attacker alters the shared host in a way that affects another attacker that could be spatially or temporally separated from the first one. The most commonly invoked scenario involves the induction of plant defence reactions which primarily depend on characteristics of both pathogens and herbivores considered. We carried out experiments under controlled conditions on young rose plants in order to assess the impact of such indirect interactions on life history traits of two pests on rose: a necrotrophic fungus, Botrytis cinerea, and an aphid, Rhodobium porosum. We highlighted (1) an indirect two-way negative interaction between B. cinerea and R. porosum which is expressed by a reduction of aphid growth rate and a decrease in growth speed of fungal lesions on the plants, and (2) a negative indirect effect of B. cinerea on insect's behaviour, as aphid preferred B. cinerea-free plants than B. cinerea-infested plants when given a choice. The implications of results in Integrated Pest Management on rose and mechanisms involved in the interactions are both discussed. |
| Databáze: | OpenAIRE |
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