Role of cuticular lipids and water-soluble compounds in tick susceptibility toMetarhiziuminfection

Autor:	Dani Eshel, Dana Ment, Paula Teper-Bamnolker, Michael Samish, Itamar Glazer, I. S. Ben-Ze’ev, Asael Rot, Galina Gindin
Rok vydání:	2013
Předmět:	Rhipicephalus annulatus Appressorium biology Cuticle fungi Arthropod cuticle Tick bacterial infections and mycoses biology.organism_classification Microbiology Conidium Insect Science parasitic diseases Botany Metarhizium Arthropod Agronomy and Crop Science
Zdroj:	Biocontrol Science and Technology. 23:956-967
ISSN:	1360-0478 0958-3157
DOI:	10.1080/09583157.2013.811217
Popis:	The arthropod cuticle acts as a physiochemical barrier protecting the organism from pathogens' entry. Entomopathogenic fungi actively penetrate the cuticles of arthropod hosts and are therefore directly affected by cuticle composition. Previously we have observed that Metarhizium spp. developing on resistant ticks ultimately die without penetrating tick's cuticle, suggesting that the cuticles of resistant ticks have antifungal compounds. In the present study, lipids and water-soluble cuticular components were extracted from engorged female tick cuticles, of one susceptible and one resistant tick species to Metarhizium spp. While conidia exposed to lipids from the susceptible tick, Rhipicephalus annulatus, germinated and differentiated into appressorium, conidia exposed to lipids from the resistant tick, Hyalomma excavatum, were inhibited. Soluble cuticular component extracts from both susceptible and resistant ticks stimulated conidial germination but not appressorium differentiation. A comparati...
Databáze:	OpenAIRE
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