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Chytridiomycota
Chytridiomycota are a division of zoosporic organisms in the kingdom Fungi, informally known as chytrids. The name is derived from the Ancient Greek ('), meaning "little pot", describing the structure containing unreleased zoöspores. Chytrids are one of the early diverging fungal lineages, and their membership in kingdom Fungi is demonstrated with chitin cell walls, a posterior whiplash flagellum, absorptive nutrition, use of glycogen as an energy storage compound, and synthesis of lysine by the -amino adipic acid (AAA) pathway. Chytrids are saprobic, degrading refractory materials such as chitin and keratin, and sometimes act as parasites. There has been a significant increase in the research of chytrids since the discovery of ''Batrachochytrium dendrobatidis'', the causal agent of chytridiomycosis. Classification Species of Chytridiomycota have traditionally been delineated and classified based on development, morphology, substrate, and method of zoöspore discharge. Howeve ... [...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] |
Rhizophydiales
Rhizophydiales are an important group of chytrid fungi. They are found in soil as well as marine and fresh water habitats where they function as parasites and decomposers. Role in the environment Rhizophydiales are parasites of a range of organisms, including invertebrates, other chytrids and algae, and they may have a role in natural control of aquatic populations, especially phytoplankton. One member, '' Rhizophydium graminis'', is a parasite of wheat roots, but causes no extensive damage to the plant. The only documented cases of a chytrid parasitizing vertebrates are ''Batrachochytrium dendrobatidis'' and ''Batrachochytrium salamandrivorans'', members of this order. They are highly destructive pathogens of frogs and salamanders respectively. The majority of the described saprotrophic species of this order are biodegraders of pollen, with only a few growing on keratin, chitin, and cellulose. The transformational role of the Rhizophydiales in aquatic food webs is little studi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chytridiales
Fungi of the order Chytridiales, like other members of its division, may either have a monocentric thallus or a polycentric rhizomycelium. When the ribosomal genes of members classified in this order were first examined using molecular techniques, it was discovered that the order contained some species that were not related. With the culture and characterization of '' Chytridium olla'', the type species of this order, the limits of the Chytridiales were established. The Chytridiales is now monophyletic and species such as '' Polychytrium aggregatum'', '' Chytriomyces angularis'' and '' Cladochytrium replicatum'' have been transferred to other orders. Genera ''incertae sedis'' * '' Achlyella'' * '' Achlyogeton'' * '' Coralliochytrium'' * '' Delfinachytrium'' * '' Pseudorhizidium'' * '' Dermomycoides'' * '' Dictyomorpha'' * '' Ichthyochytrium'' * ''Mucophilus ''Mucophilus'' is a fungal genus in the Chytridiales of uncertain familial placement. A monotypic In biology, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synchytriales
''Synchytriaceae'' is a chytrid fungus family in the division Chytridiomycota. The family was described by German mycologist Joseph Schröter in 1892. The type genus, ''Synchytrium'', contains about 200 species of fungi that are parasitic on flowering plants, ferns, mosses, and algae. ''Synchytrium endobioticum ''Synchytrium endobioticum'' is a chytrid fungus that causes the potato wart disease, or black scab. It also infects some other plants of the genus ''Solanum'', though potato is the only cultivated host. Systematics Traditionally, ''Synchytr ...'' causes potato wart disease, an economically important disease of cultivated potato. References External links * Chytridiomycota Fungus families Taxa named by Joseph Schröter Taxa described in 1892 {{Chytridiomycota-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spizellomycetales
Spizellomycetales is an Order (biology), order of fungi in the Chytridiomycetes. Spizellomycetalean chytrids are essentially ubiquitous zoospore-producing fungi found in soils where they decompose pollen. Recently they have also been found in dung and harsh alpine environments, greatly expanding the range of habitats where one can expect to find these fungi. Role in the environment Spizellomycetalean chytrids have beneficial roles in the soil for nutrient recycling and as parasites of organisms that attack plants, such as nematodes and oospores of downy mildews. On the other hand, they also have detrimental roles as parasites of arbuscular mycorrhizae, symbiotic fungi that help plants gain essential nutrients. Culture isolation studies and molecular characterization of these fungi have demonstrated a great deal of undescribed diversity within the Spizellomycetales, even for isolates collected within the same geographic location. Thus, these understudied fungi await greater explor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chytridiomycetes
Chytridiomycetes () is a class of fungi. Members are found in soil, fresh water, and saline estuaries. They are first known from the Rhynie chert. It has recently been redefined to exclude the taxa Neocallimastigomycota and Monoblepharidomycetes, which are now a phylum and a sister-class respectively. Chytridiomycetes is the major class of the phylum Chytridiomycota, which contains a number of parasitic Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson has c ... species. At least two species in this class are known to infect a number of amphibian species. Phylogeny Based on the work of "The Mycota: A Comprehensive Treatise on Fungi as Experimental Systems for Basic and Applied Research", Powell and Letcher 2015 and Karpov et al. 2014. References {{Taxonbar, from=Q1137709 Chytrid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladochytriales
Cladochytriales is an order of chytrid fungi. It is the only order in the monotypic class Cladochytriomycetes. The order was described in 2009 to accommodate a monophyletic clade containing many genera of chytrid fungi often observed growing over decaying plant tissue and other cellulosic substrates from aquatic habitats and humid soils. Taxonomy The 2022 taxonomy of fungi places 5 families and 3 uncertain genera in Cladochytriales: *Family Catenochytridiaceae **'' Catenochytridium'' *Family Cladochytriaceae **''Cladochytrium'' *Family Endochytriaceae **'' Diplophlyctis'' **'' Endochytrium'' *Family Nowakowskiellaceae **''Nowakowskiella ''Nowakowskiella'' is the sole genus of fungi in the family ''Nowakowskiellaceae''. The genus was circumscribed by German mycologist Joseph Schröter in 1897, while the family was originally circumscribed by Frederick Kroeber Sparrow in 1942, a ...'' *Family Septochytriaceae **'' Septochytrium'' *''incertae sedis'' **'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaloraphidiales
''Hyaloraphidium'' is a genus of chytrid-like fungi. It is the only member of the family Hyaloraphidiaceae, order Hyaloraphidiales and class Hyaloraphidiomycetes in the division Monoblepharomycota. The genus has almost cosmopolitan distribution. Species: *''Hyaloraphidium contortum'' *''Hyaloraphidium curvatum ''Hyaloraphidium'' is a genus of chytrid-like fungi. It is the only member of the family Hyaloraphidiaceae, order Hyaloraphidiales and class Hyaloraphidiomycetes in the division Monoblepharomycota. The genus has almost cosmopolitan distribution. ...'' References {{Taxonbar, from=Q10527744 Chytridiomycota Chytridiomycota genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monoblepharidales
Members of the Monoblepharidomycetes have a filamentous thallus that is either extensive or simple and unbranched. They frequently have a holdfast at the base. In contrast to other taxa in their phylum, some reproduce using autospores, although many do so through zoospores. Oogamous sexual reproduction may also occur. In addition to the type genus In biological taxonomy, the type genus is the genus which defines a biological family and the root of the family name. Zoological nomenclature According to the International Code of Zoological Nomenclature, "The name-bearing type of a nominal f ..., the order Monoblepharidales includes '' Harpochytrium'' and '' Oedogoniomyces''. Taxonomy Based on the work of "The Mycota: A Comprehensive Treatise on Fungi as Experimental Systems for Basic and Applied Research" and synonyms from "Part 1- Virae, Prokarya, Protists, Fungi". * Class Monoblepharidomycetes Schaffner 1909 ** Order Harpochytriales Emerson & Whisler 1968 *** Family Oedog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monoblepharidomycetes
Members of the Monoblepharidomycetes have a filamentous thallus that is either extensive or simple and unbranched. They frequently have a holdfast at the base. In contrast to other taxa in their phylum, some reproduce using autospores, although many do so through zoospores. Oogamous sexual reproduction may also occur. In addition to the type genus In biological taxonomy, the type genus is the genus which defines a biological family and the root of the family name. Zoological nomenclature According to the International Code of Zoological Nomenclature, "The name-bearing type of a nominal f ..., the order Monoblepharidales includes '' Harpochytrium'' and '' Oedogoniomyces''. Taxonomy Based on the work of "The Mycota: A Comprehensive Treatise on Fungi as Experimental Systems for Basic and Applied Research" and synonyms from "Part 1- Virae, Prokarya, Protists, Fungi". * Class Monoblepharidomycetes Schaffner 1909 ** Order Harpochytriales Emerson & Whisler 1968 *** Family Oedog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoospore
A zoospore is a motile asexual spore that uses a flagellum for locomotion. Also called a swarm spore, these spores are created by some protists, bacteria, and fungi to propagate themselves. Diversity Flagella types Zoospores may possess one or more distinct types of flagella - tinsel or "decorated", and whiplash, in various combinations. *Tinsellated (straminipilous) flagella have lateral filaments known as mastigonemes perpendicular to their main axis, which allow for more surface area, and disturbance of the medium, giving them the property of a rudder, that is, used for steering. *Whiplash flagella are straight, to power the zoospore through its medium. Also, the "default" zoospore only has the propelling, whiplash flagella. Both tinsel and whiplash flagella beat in a sinusoidal wave pattern, but when both are present, the tinsel beats in the opposite direction of the whiplash, to give two axes of control of motility. Morphological types In eukaryotes, the four main types ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingdom (biology)
In biology, a kingdom is the second highest taxonomic rank, just below domain. Kingdoms are divided into smaller groups called phyla. Traditionally, some textbooks from the United States and Canada used a system of six kingdoms (Animalia, Plantae, Fungi, Protista, Archaea/Archaebacteria, and Bacteria/Eubacteria) while textbooks in Great Britain, India, Greece, Brazil and other countries use five kingdoms only (Animalia, Plantae, Fungi, Protista and Monera). Some recent classifications based on modern cladistics have explicitly abandoned the term ''kingdom'', noting that some traditional kingdoms are not monophyletic, meaning that they do not consist of all the descendants of a common ancestor. The terms ''flora'' (for plants), ''fauna'' (for animals), and, in the 21st century, ''funga'' (for fungi) are also used for life present in a particular region or time. Definition and associated terms When Carl Linnaeus introduced the rank-based system of nomenclature into biology i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
