Di¡erential divergencesofobligately insect-pathogenic Entomophthora species from£yandaphid hosts
نویسندگان
چکیده
Three DNA regions (ITS 1, LSU rRNA and GPD) of isolates from the insectpathogenic fungus genus Entomophthora originating from different fly (Diptera) and aphid (Hemiptera) host taxa were sequenced. The results documented a large genetic diversity among the fly-pathogenic Entomophthora and only minor differences among aphid-pathogenic Entomophthora. The evolutionary time of divergence of the fly and the aphid host taxa included cannot account for this difference. The host-driven divergence of Entomophthora, therefore, has been much greater in flies than in aphids. Host-range differences or a recent host shift to aphid are possible explanations.
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