RESUMO
Four strains of an asexual arthroconidial yeast species were isolated from Drosophila flies in two Atlantic rain forest sites in Brazil and two strains from oak tasar silkworm larvae (Antheraea proylei) in India. Analysis of the sequences of the D1/D2 large subunit rRNA gene showed that this yeast represented a novel species of the genus Geotrichum, described as Geotrichum silvicola sp. nov. The novel species was related to the ascogenous genus Galactomyces. The closest relatives of Geotrichum silvicola were Galactomyces sp. strain NRRL Y-6418 and Galactomyces geotrichum. The type culture of Geotrichum silvicola is UFMG-354-2T (=CBS 9194T=NRRL Y-27641T).
Assuntos
Drosophila/microbiologia , Geotrichum/classificação , Mariposas/microbiologia , Animais , Brasil , DNA Fúngico/análise , DNA Ribossômico/análise , Genes de RNAr/genética , Geotrichum/genética , Geotrichum/isolamento & purificação , Índia , Larva/microbiologia , Dados de Sequência Molecular , Mariposas/crescimento & desenvolvimento , Técnicas de Tipagem Micológica , RNA Ribossômico/genética , Saccharomycetales/classificação , Análise de Sequência de DNA , ÁrvoresRESUMO
We report here on bioturbation traces, with micro-dendrite textures, composed of a mixture of altered aluminum and polycarbonate, which have been developed in a common compact disk (CD), destroying information pits. Fungal hyphae proliferated in these deteriorated zones, and Geotrichum-type fungus was isolated from surface-sterilized CD fragments. The severe biodeterioration described is attributed to the slow growth of this arthroconidial fungus on the CD material in the tropical indoor environment of Belize, Central America (approximately 30 degrees C, approximately 90% humidity).