Bacterial plant pathogens affect the locomotor behavior of the insect vector: a case study of Citrus volkameriana – Triozae erytreae – Candidatus Liberibacter asiaticus system
2024
Ameline, Arnaud | Karkach, Alain | Denoirjean, Thomas | Grondin, Martial | Molinari, Florencia | Turpin, Patrick | Delatte, Hélène | Reynaud, Bernard | Ecologie et Dynamique des Systèmes Anthropisés - UMR CNRS 7058 UPJV (EDYSAN) ; Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS) | Peuplements végétaux et bioagresseurs en milieu tropical (UMR PVBMT) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Université de La Réunion (UR)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Département Systèmes Biologiques (Cirad-BIOS) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)
International audience
显示更多 [+] 显示较少 [-]英语. 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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