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Nannizziopsis Vriesii
''Nannizziopsis vreisii'' is a keratinophilic microfungus in the Family Onygenaceae of the order Onygenales. Also included in this family are dematophytes and saprophytic species. While the ecology of ''N. vriessi'' is not well known, there has been several studies which identifies the ''Chrysosporium'' anamorph of ''N. vriesii'' as a causal agent of skin lesions in reptiles across several regions. This species is usually identified under a microscope by its white ascomata, and hyaline and globose ascospores . Like many other fungi, ''N. vreisii'' has a sexual and asexual state, the asexual states are classified as the genus ''Chryososporium'', ''Malbranchea'' or ''Sporendonema''. Taxonomy and naming ''Nannizziopsis vreisii'' was first described under the genus ''Rollandina'' by Patouillard in 1905. In 1970, further studies by Benjamin and Apinis lead to the addition of several new species, including ''R. vriesii'' to the genus ''Rollandina''. ''Rollandina vreissi'' was placed u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungi
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, Protozoa, and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascomycota
Ascomycota is a phylum of the kingdom Fungi that, together with the Basidiomycota, forms the subkingdom Dikarya. Its members are commonly known as the sac fungi or ascomycetes. It is the largest phylum of Fungi, with over 64,000 species. The defining feature of this fungal group is the " ascus" (), a microscopic sexual structure in which nonmotile spores, called ascospores, are formed. However, some species of the Ascomycota are asexual, meaning that they do not have a sexual cycle and thus do not form asci or ascospores. Familiar examples of sac fungi include morels, truffles, brewers' and bakers' yeast, dead man's fingers, and cup fungi. The fungal symbionts in the majority of lichens (loosely termed "ascolichens") such as ''Cladonia'' belong to the Ascomycota. Ascomycota is a monophyletic group (it contains all descendants of one common ancestor). Previously placed in the Deuteromycota along with asexual species from other fungal taxa, asexual (or anamorphic) ascomyce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurotiomycetes
Eurotiomycetes is a large class of ascomycetes with cleistothecial ascocarps within the subphylum Pezizomycotina, currently containing around 3810 species according to the Catalogue of Life. It is the third largest lichen A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship. It contains most of the fungi previously known morphologically as "Plectomycetes". Systematics and phylogeny Internal relationships The class Eurotiomycetes was circumscription (taxonomy), circumscribed in 1997 by Sweden, Swedish mycologists Ove Erik Eriksson and Katarina Winka. At that time ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onygenales
The Onygenales are an order of fungi in the class Eurotiomycetes and division Ascomycota. The order's last common ancestor is estimated to have lived 150 million years ago. Onygenales can consume and break down keratin, the main component of the outer layer of skin. They are primarily found on animals, droppings, and areas frequented by animals. Many are dimorphic, and can change from mold to yeast form depending on their environment. Many onygenalean fungi are pathogens. One species, ''Trichophyton rubrum'', is the primary cause of athlete's foot. This order also includes Coccidioides implicated in Valley fever. The Onygenales are important as emerging human pathogens because of the rising rates of immunosuppression due to live-organ transplant, HIV/AIDS, and autoimmune disorders such as lupus erythematosus Lupus erythematosus is a collection of autoimmune diseases in which the human immune system becomes hyperactive and attacks healthy tissues. Symptoms of these disease ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onygenaceae
The Onygenaceae are a family (biology), family of fungi in the Ascomycota, class Eurotiomycetes. Genera These are the genera that are in the Onygenaceae, according to a 2021 review of fungal classification. Following the genus name is the Author citation (botany), taxonomic authority (those who first circumscribed the genus; standardized author abbreviations are used), year of publication, and the estimated number of species. * ''Amauroascus'' – 15 spp. * ''Aphanoascus'' – 18 spp. * ''Apinisia'' – 3 spp. * ''Arachnotheca'' – 1 sp. * ''Ascocalvatia'' – 1 sp. * ''Auxarthron'' – 13 spp. * ''Auxarthronopsis'' – 2 spp. * ''Bifidocarpus'' – 2 spp. * ''Byssoonygena'' – 1 sp. * ''Canomyces'' – 1 sp. * ''Castanedomyces'' – 1 sp. * ''Chlamydosauromyces'' – 1 sp. * ''Chrysosporium'' – 66 spp. * ''Coccidioides'' – 6 spp. * ''Currahomyces'' – 1 sp. * ''Kuehniella'' – 2 spp. * ''Leucothecium'' – 3 spp. * ''Malbranchea'' – 23 spp. * ''Myoti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nannizziopsis
''Nannizziopsis'' is a genus of fungi within the Nannizziopsidaceae family. It was once within the Onygenaceae family, before being moved. References External links *Nannizziopsis' at Index Fungorum ''Index Fungorum'' is an international project to index all formal names (scientific names) in the fungus kingdom. the project is based at the Royal Botanic Gardens, Kew, one of three partners along with Landcare Research and the Institute of M ... Onygenales Eurotiomycetes genera {{Eurotiomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrysosporium
''Chrysosporium'' is a genus of hyaline hyphomycetes fungi in the family Onygenaceae. ''Chrysosporium'' colonies are moderately fast-growing, flat, white to tan to beige in color; they often have a powdery or granular surface texture. Hyaline, one-celled ( ameroconidia) are produced directly on vegetative hyphae by non-specialized conidiogenous cells. Conidia are typically pyriform to clavate with truncate bases (6 to 7 by 3.5 to 4 um) and are formed either intercalary (arthroconidia), laterally (often on pedicels), or terminally. Clinical significance Species of ''Chrysosporium'' are occasionally isolated from skin and nail scrapings, especially from feet, but, because they are common soil saprotrophs, they are usually considered as contaminants. There are about 22 species of Chrysosporium, several are keratinophilic with some also being thermotolerant, and cultures may closely resemble some dermatophytes, especially ''Trichophyton mentagrophytes'', and some strains m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascospore
An ascus (; ) is the sexual spore-bearing cell produced in ascomycete fungi. Each ascus usually contains eight ascospores (or octad), produced by meiosis followed, in most species, by a mitotic cell division. However, asci in some genera or species can occur in numbers of one (e.g. ''Monosporascus cannonballus''), two, four, or multiples of four. In a few cases, the ascospores can bud off conidia that may fill the asci (e.g. ''Tympanis'') with hundreds of conidia, or the ascospores may fragment, e.g. some ''Cordyceps'', also filling the asci with smaller cells. Ascospores are nonmotile, usually single celled, but not infrequently may be coenocytic (lacking a septum), and in some cases coenocytic in multiple planes. Mitotic divisions within the developing spores populate each resulting cell in septate ascospores with nuclei. The term ocular chamber, or oculus, refers to the epiplasm (the portion of cytoplasm not used in ascospore formation) that is surrounded by the "bourrelet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophidiomyces Ophiodiicola
''Ophidiomyces ophiodiicola'' is the cause of ophidiomycosis also known as snake fungal disease or SFD in some species of snakes. It is a keratinophilic fungus from the family Onygenaceae of the order Onygenales. ''O. ophiodiicola'' is an emerging pathogen of captive and wild snakes in North America and Europe. Clinical signs include skin swelling, crusts, and nodules of the skin. The mode of transmission is unknown, but is speculated to occur with direct contact between snakes or with the contaminated environment. Currently no treatment for ''O. ophiodiicola'' is available. ''O. ophiodiicola'' was identified by Sigler, Hambleton & Paré in 2013. ''O. ophiodiicola'' is the only species in the genus ''Ophidiomyces''. It was previously known as ''Chrysosporium ophiodiicola'' and is closely related to ''Chrysosporium'' anamorph ''Nannizziopsis vriesii'' (CANV). Taxonomy and naming ''Ophidiomyces ophiodiicola'' was first described as ''Chrysosporium ophiodiicola'' by Josef Guarro a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungi Described In 1970
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, Protozoa, and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''true fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
