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A multigene phylogeny reveals that Ochroconis belongs to the family Sympoventuriaceae (Venturiales, Dothideomycetes)

Abstract : Ochroconis is a genus of ascomycete fungi that includes oligotrophic saprobes and some opportunistic species causing infections in vertebrates. The most important of these opportunists is the neurotropic species Ochroconis gallopava, which occurs in birds and occasionally in immunocompromised humans. Other Ochroconis species have been isolated from superficial infections of cats, dogs and fish. In their natural environment, these species are found in litter, soil, and on moist surfaces. Some thermophilic species have been isolated from hot springs, industrial effluents, and self-heated plant material. Although their ecology and epidemiology has been investigated, their classification within the ascomycetes is still unknown. Here, the phylogenetic placement of Ochroconis is investigated using a four-gene phylogeny (nuLSU, nuSSU, mtSSU and RPB2). The results show that Ochroconis and its recently described sister genus Verruconis belong to the order Venturiales (Dothideomycetes) and are nested within the Sympoventuriaceae, a family recently erected for a group of plant-saprobes or -pathogens sister to the Venturiaceae. They form a well-supported monophyletic group together with five species of the anamorphic genus Fusicladium isolated from leaf and needle litters.
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Submitted on : Thursday, March 2, 2017 - 11:53:42 AM
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M. Machouart, K. Samerpitak, G. S. de Hoog, C. Gueidan. A multigene phylogeny reveals that Ochroconis belongs to the family Sympoventuriaceae (Venturiales, Dothideomycetes). Fungal Diversity, 2014, 65 (1), pp.77 - 88. ⟨10.1007/s13225-013-0252-7⟩. ⟨hal-01481159⟩



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