Nutritional symbiosis in ticks: singularities of the genus Ixodes.

Autor: Duron O; MIVEGEC, University of Montpellier (UM), Centre National de la Recherche Scientifique (CNRS), Institut pour la Recherche et le Développement (IRD), Montpellier, France. Electronic address: olivier.duron@ird.fr.
Jazyk: angličtina
Zdroj: Trends in parasitology [Trends Parasitol] 2024 Aug; Vol. 40 (8), pp. 696-706. Date of Electronic Publication: 2024 Jun 27.
DOI: 10.1016/j.pt.2024.06.006
Abstrakt: Symbiosis with intracellular bacteria is essential for the nutrition of ticks, particularly through the biosynthesis of B vitamins. Yet, ticks of the genus Ixodes, which include major vectors of human pathogens, lack the nutritional symbionts usually found in other tick genera. This paradox raises questions about the mechanisms that Ixodes ticks use to prevent nutritional deficiencies. Nonetheless, Ixodes ticks commonly harbor other symbionts belonging to the order Rickettsiales. Although these obligate intracellular bacteria are primarily known as human pathogens, Rickettsiales symbionts often dominate the Ixodes microbial community without causing diseases. They also significantly influence Ixodes physiology, synthesize key B vitamins, and are crucial for immatures. These findings underscore unique associations between Rickettsiales and Ixodes ticks distinct from other tick genera.
Competing Interests: Declaration of interests The author declares no competing interests.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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