Local and systemic responses induced by aphids in Solanum tuberosum plants |
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Authors: | Sé bastien Dugravot &dagger ,Laurence Brunissen,Emilie Lé tocart,W. Freddy Tjallingii,Charles Vincent,Philippe Giordanengo,& Anas Cherqui |
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Affiliation: | Biologie des Plantes et Contrôle des Insectes Ravageurs, UPRES EA 3900, Universitéde Picardie Jules Verne, 33 rue Saint Leu, 80039 Amiens cedex, France,;Laboratory of Entomology, Wageningen University, PO Box 8031, 6700EH Wageningen, The Netherlands, and;Horticultural Research and Development Centre, Agriculture and Agri-Food Canada, 430 Gouin Blvd., Saint-Jean-sur-Richelieu, QC, Canada J3B 3E6 |
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Abstract: | The aphids Macrosiphum euphorbiae (Thomas) and Myzus persicae (Sulzer) (Homoptera: Aphididae) are serious pests of potato (Solanum tuberosum L.) (Solanaceae), notably in transmitting several plant viruses. Heterospecific interactions may occur between these two species as they are often seen at the same time on the same potato plant in the field. As aphid infestation is known to induce both local and systemic changes, we conducted experiments to determine the effect of previous infestation on probing behaviour and feeding‐related parameters. We used the DC electrical penetration graph technique to characterize the influence of previous infestation by conspecific M. persicae or by heterospecific Ma. euphorbiae on M. persicae feeding behaviour at both local and systemic levels, i.e., on previously infested leaves and on non‐previously infested leaves of infested plants, respectively. Conspecific and heterospecific infestation led to similar modification of M. persicae feeding activities. However, the effects of previous infestation occurring at the local level were opposite to those observed at the systemic level. Myzus persicae food acceptance was slightly enhanced on previously infested leaves, whereas it was inhibited on non‐infested leaves of infested plants, which indicated an induced resistance mechanism. Our results advance the understanding of the mechanisms involved in aphid–host plant acceptance and colonization processes on potato plants in conspecific and heterospecific situations. |
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Keywords: | EPG feeding behaviour conspecific interactions heterospecific interactions plant induced response previous infestation Macrosiphum euphorbiae Myzus persicae potato Homoptera Aphididae |
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