Differential divergences of obligately insect- pathogenic Entomophthora species from fly and aphid and fly hosts

JENSEN, A.B., EILENBERG, J, & LOPEZ LASTRA, C.C.

FEMS MICROBIOLOGY LETTERS

WILEY-BLACKWELL PUBLISHING, INC

Año: 2009 vol. 300 p. 180 - 187

0378-1097

The DNA regions (ITS1 , LSU r RNA and GPD) of isolates from the insecto pathogenic 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 hosts taxa included cannot account for this difference. The host driven of Entomophthora , therefore,  has been much greater in flies than in aphids . Host range differences or a rcent host shift to aphid are possible explanations.