The genus Ochroconis(Sympoventuriaceae,Venturiales)is revised and currently contains 13 species for which the phylogenetic position has been determined using multilocus sequencing.The older generic name Scolecobasidiu...The genus Ochroconis(Sympoventuriaceae,Venturiales)is revised and currently contains 13 species for which the phylogenetic position has been determined using multilocus sequencing.The older generic name Scolecobasidium is considered to be of doubtful identity because the type specimen is ambiguous.Within the Ochroconis lineage,phylogenetic distances of all markers analyzed are exceptionally large,both between and within species.A new genus Verruconis is proposed for the neurotropic opportunist Ochroconis gallopava.Species accepted within the lineages are keyed out on the basis of phenotypic characters.Main ecological traits within each species are discussed.Verruconis species are thermophilic and one of them is an important agent of infection in the brain,while Ochroconis is mesophilic,several species causing infections in cold-blooded animals.展开更多
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 Ochroc...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.展开更多
文摘The genus Ochroconis(Sympoventuriaceae,Venturiales)is revised and currently contains 13 species for which the phylogenetic position has been determined using multilocus sequencing.The older generic name Scolecobasidium is considered to be of doubtful identity because the type specimen is ambiguous.Within the Ochroconis lineage,phylogenetic distances of all markers analyzed are exceptionally large,both between and within species.A new genus Verruconis is proposed for the neurotropic opportunist Ochroconis gallopava.Species accepted within the lineages are keyed out on the basis of phenotypic characters.Main ecological traits within each species are discussed.Verruconis species are thermophilic and one of them is an important agent of infection in the brain,while Ochroconis is mesophilic,several species causing infections in cold-blooded animals.
文摘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.
