Bacterial plant pathogens affect the locomotor behavior of the insect vector: a case study of Citrus volkameriana – Triozae erytreae – Candidatus Liberibacter asiaticus system - Université de Picardie Jules Verne Accéder directement au contenu
Article Dans Une Revue Insect Science Année : 2023

Bacterial plant pathogens affect the locomotor behavior of the insect vector: a case study of Citrus volkameriana – Triozae erytreae – Candidatus Liberibacter asiaticus system

Résumé

Plant pathogens can alter the behavior of their insect vectors as well as their survival and reproduction. The African psyllid, Trioza erytreae , is one of the vectors of Huanglongbing, a citrus disease caused mainly by “ Candidatus Liberibacter asiaticus” ( C Las). The purpose of this study was to characterize the effects of C Las on the psyllid, T. erytreae using Citrus volkamerina plants as the study system. The study focused more specifically on the C Las effects prior to and after its acquisition by the psyllid T. erytreae . Our results did not support the hypothesis that C Las effects psyllid probing behavior prior to acquisition; few differences were observed between uninfected T. erytrea feeding on C Las‐infected versus control plants. On the other hand, compared to psyllids that had completed their development on control plants, the ones that had completed their development on a C Las‐infected plant exhibited changes in their behavior (greater velocity), physiology (smaller mass) and biochemistry (lower water and lipid content). Altogether, our results confirm the existence of a marked postacquisition effect on the vector locomotor behavior and a minor preacquisition effect of C Las on the vector behavior, which can be partially explained by physiological and biochemical changes.
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Dates et versions

hal-04247438 , version 1 (18-10-2023)

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Arnaud Ameline, Alain Karkach, Thomas Denoirjean, Martial Grondin, Florencia Molinari, et al.. Bacterial plant pathogens affect the locomotor behavior of the insect vector: a case study of Citrus volkameriana – Triozae erytreae – Candidatus Liberibacter asiaticus system. Insect Science, 2023, ⟨10.1111/1744-7917.13279⟩. ⟨hal-04247438⟩
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