Chytridiomycota is a division of the Fungi kingdom and contains only one class, Chytridiomycetes. The name refers to the chytridium (from the Greek, chytridion, meaning "little pot"): the structure containing unreleased spores. In older classifications, chytrid orders (except the recently established Neocallimasticales and Spizellomycetales) were placed in the Class Phycomycetes under the Subdivision Myxomycophyta of the Division Fungi. Also, in an older and more restricted sense (not used here), the term "chytrids" referred just to those fungi in the order Chytridiales. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Divisions Chytridiomycota Zygomycota Ascomycota Basidiomycota The Fungi (singular: fungus) are a large group of organisms ranked as a kingdom within the Domain Eukaryota. ... In biology, the equivalent of a phylum in the plant or fungi kingdom is called a division. ... Divisions Chytridiomycota Deuteromycota Zygomycota Glomeromycota Ascomycota Basidiomycota Fungus growing on a tree in Borneo A fungus (plural fungi) is a eukaryotic organism that digests its food externally and absorbs the nutrient molecules into its cells. ... Ernst Haeckels presentation of a three-kingdom system (Plantae, Protista, Animalia) in his 1866 Generelle Morphologie der Organismen. ... Scientific classification or biological classification refers to how biologists group and categorize extinct and living species of organisms. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Scientific classification or biological classification refers to how biologists group and categorize extinct and living species of organisms. ...

The chytrids are the most primitive of the fungi and are mostly saprobic (degrading chitin and keratin). Many chytrids are aquatic (mostly found in freshwater). There are approximately 1,000 chytrid species, in 127 genera, distributed among 5 orders. Both zoospores and gametes of the chytrids are mobile by their flagella, one whiplash per individual. The thalli are coenocytic and usually form no true mycelium (having rhizoids instead). Some species are unicellular. Structure of chitin molecule In biology, chitin (pronounced keye-tin) is one of the main components in the cell walls of fungi, the exoskeletons of insects and other arthropods, and in some other animals. ... Microscopy of keratin filaments inside cells. ... Aquatic plants — also called hydrophytic plants or hydrophytes — are plants that have adapted to living in or on aquatic environments. ... For the village on the Isle of Wight, see Freshwater, Isle of Wight. ... A motile asexual spore utilizing a flagellum for locomotion. ... Gametes (in Greek: γαμέτες) —also known as sex cells, or spores—are the specialized germ cells that come together during fertilization (conception) in organisms that reproduce sexually. ... A flagellum (plural, flagella) is a whip-like organelle that many unicellular organisms, and some multicellular ones, use to move about. ... Thallus is an undifferentiated vegetative tissue (without specialization of function) of some non-mobile organisms, which were previously known as the thallophytes. ... A coenocyte is a multinucleate cell. ... Mycelium is the vegetative part of a fungus consisting of a mass of branching threadlike hyphae that exists below the ground or within another substrate. ... Rhizoids, in fungi, are small branching hyphae that grow downwards from the stolons that anchor the fungus. ... A microorganism or microbe is an organism that is so small that it is microscopic (invisible to the naked eye). ...

Some chytrid species are known to kill frogs in large numbers by blocking the frogs' respiratory skins — the infection is referred to as chytridomycosis. Decline in frog populations led to the discovery of chytridomycosis in 1998 in Australia and Panama. Chytrids may also infect plant species; in particular, maize-attacking and alfalfa-attacking species have been described. Distribution of frogs (in black) Suborders Archaeobatrachia Mesobatrachia Neobatrachia - List of Anuran families A frog is an amphibian in the order Anura. ... Chytridiomycosis is a fatal infectious disease that affects amphibians, caused by the chytrid fungus - Batrachochytrium dendrobatidis (Bd) to be more specific. ... Since about 1950, the populations of many species of amphibians (caecilians, frogs, toads, salamanders and newts) throughout the world have declined markedly; some species have become extinct. ... Binomial name Zea mays L. Maize (Zea mays ssp. ... Binomial name Medicago sativa L. Subspecies subsp. ...

External links

• Chytrid Fungi Online: by the University of Alabama