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Blastocladiomycota
Blastocladiomycota is one of the currently recognized phyla within the kingdom Fungi.Hibbett DS et al. 2007. A higher-level phylogenetic classification of the fungi. Mycological Research 111:509–47. Blastocladiomycota was originally the order Blastocladiales within the phylum Chytridiomycota until molecular and zoospore ultrastructural characters were used to demonstrate it was not monophyletic with Chytridiomycota. The order was first erected by Petersen for a single genus, ''Blastocladia'', which was originally considered a member of the oomycetes.Sparrow FK. 1960. Aquatic phycomycetes. 2nd ed. Ann Arbor, Michigan: University of Michigan Press. Accordingly, members of Blastocladiomycota are often referred to colloquially as "chytrids." However, some feel "chytrid" should refer only to members of Chytridiomycota.Alexopoulos CJ, Mims CW, Blackwell M. 1996. Introductory Mycology. 4th edition. John Wiley & Sons, Inc. Thus, members of Blastocladiomycota are commonly called "blast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blastocladiales
Blastocladiomycota is one of the currently recognized phyla within the kingdom Fungi#Taxonomic groups, Fungi.Hibbett DS et al. 2007. A higher-level phylogenetic classification of the fungi. Mycological Research 111:509–47. Blastocladiomycota was originally the order Blastocladiales within the phylum Chytridiomycota until molecular and zoospore ultrastructure, ultrastructural phenotypic trait, characters were used to demonstrate it was not monophyletic with Chytridiomycota. The order was first erected by Petersen for a single genus, ''Blastocladia'', which was originally considered a member of the oomycetes.Sparrow FK. 1960. Aquatic phycomycetes. 2nd ed. Ann Arbor, Michigan: University of Michigan Press. Accordingly, members of Blastocladiomycota are often referred to colloquially as "chytrids." However, some feel "chytrid" should refer only to members of Chytridiomycota.Alexopoulos CJ, Mims CW, Blackwell M. 1996. Introductory Mycology. 4th edition. John Wiley & Sons, Inc. Thus, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungi
A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one of the kingdom (biology)#Six kingdoms (1998), traditional eukaryotic kingdoms, along with Animalia, Plantae, and either Protista or 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 motility, 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 o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urophlyctis
''Physoderma'' is a genus of chytrid fungi. Described by German botanist Karl Friedrich Wilhelm Wallroth in 1833, the genus contains some species that are parasitic on vascular plants, including '' P. alfalfae'' and '' P. maydis'', causative agents of crown wart of alfalfa and brown spot of corn, respectively. Of the chytrid genera, ''Physoderma'' is the oldest.Sparrow FK. 1960. Aquatic phycomycetes. 2nd ed. Ann Arbor, Michigan: University of Michigan Press. However, species were confused with the rust fungi, the genus '' Synchytrium'', and the genus '' Protomyces'' of Ascomycota.Karling, J.S. 1977. Chytridiomycetarum Iconographia. Monticello, New York: Lubrecht & Cramer. Members of ''Physoderma'' are obligate parasites of pteridophytes and angiosperms. There are approximately 80 species within this genus (depending on whether one includes those traditionally belonging to '' Urophlyctis''). Taxonomic history The genus was erected in 1833 on the basis of resting spore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physoderma
''Physoderma'' is a genus of chytrid fungi. Described by German botanist Karl Friedrich Wilhelm Wallroth in 1833, the genus contains some species that are parasitism, parasitic on vascular plants, including ''Physoderma alfalfae, P. alfalfae'' and ''Physoderma maydis, P. maydis'', causative agents of crown wart of alfalfa and brown spot of corn, respectively. Of the chytrid genera, ''Physoderma'' is the oldest.Sparrow FK. 1960. Aquatic phycomycetes. 2nd ed. Ann Arbor, Michigan: University of Michigan Press. However, species were confused with the rust fungi, the genus ''Synchytrium'', and the genus ''Protomyces'' of Ascomycota.Karling, J.S. 1977. Chytridiomycetarum Iconographia. Monticello, New York: Lubrecht & Cramer. Members of ''Physoderma'' are parasite, obligate parasites of pteridophytes and angiosperms. There are approximately 80 species within this genus (depending on whether one includes those traditionally belonging to ''Urophlyctis''). Taxonomic history The g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coelomomyces
''Coelomomyces'' is the only genus of fungi in the family Coelomomycetaceae. Species in the genus can be used as agents for the biological control of mosquitoes. Characteristics ''Coelomomyces'' are obligate parasites of mosquitoes and chironomids, meaning that they require their hosts to complete their lifecycle. One species, '' Coelomomyces psorophorae'', is even heteroecious; it requires two completely different hosts as part of its life cycle over the generations, larvae of both the mosquito '' Culiseta inornata'' as well as the copepod '' Cyclops venalis''. Due to their lethal nature and host specificity, they have been used by humans for biological control of mosquitoes and other insects. The mycelium of Coelomomyces spreads among infected mosquito larva. As the larvae disintegrate, the sporangia break free and are released to spread the fungus, sometimes among copepods who will die after nurturing the fungus for a time. The exact path differs from species to species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allomyces
''Allomyces'' is a genus of fungi in the family Blastocladiaceae. It was circumscribed by British mycologist Edwin John Butler in 1911. Species in the genus have a polycentric thallus and reproduce sexually or asexually by zoospores that have a whiplash-like flagella. They are mostly isolated from soils in tropical countries, commonly in ponds, rice fields, and slow-moving rivers. Morphology ''Allomyces'' thalli consist of a cylindrical trunk-like basal cell that gives rise to well-developed, highly branched rhizoids that anchor the thallus to the substrate. The trunk-like basal cell also gives rise to numerous dichotomously branched side branches that terminate as either resistant sporangia, zoosporangia, or gametangia depending on the life cycle stage. Septa are sometimes present especially at the base of reproductive organs. Life cycle and mating There are three distinct life cycles in ''Allomyces'', and some authors delineate the subgenera ''Euallomyces'', ''Cystogenes' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physodermatomycetes
Physodermatacae is a family of chytrid fungi in the order Physodermatales. Species in the family have a parasitic relationship with the host's physoderma. This family is distinctive in that it contains a thick wall around the sporangia to resist against unfavorable conditions. Sporangia releases from a host plant when rotting, dispersal is carried through the air. This family is not to be confused or related to basidiomycetes rusts and smut fungi. This parasite is distributed all across the world in aquatic, semi aquatic wetlands and in some ferns. Physodermatacae breaks into two distinguished clades: Physoderma and Urophlyctis ''Physoderma'' is a genus of chytrid fungi. Described by German botanist Karl Friedrich Wilhelm Wallroth in 1833, the genus contains some species that are parasitic on vascular plants, including '' P. alfalfae'' and '' P. maydis'', ca ..., which are grouped together because of the similar algal parasite called Paraphysoderma. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 zoospores. Chytrids are one of the earliest 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 zoospore disch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allomyces Macrogynus
''Allomyces macrogynus'' is a species of fungus in the family Blastocladiaceae. It was first described by mycologist Ralph Emerson in 1941 as a variety of '' Allomyces javanicus'', and later given distinct species status in 1954. Its genome has been sequenced by the Broad Institute. Genome studies The genome of ''Allomyces macrogynus'' has been sequenced and this makes it desirable to review an organism of interesting structure and one which is responsive to environmental changes in easily observable ways. In Seattle 1969, at an informal meeting of Emerson, Machlis, Olson, Seale and Youatt, Youatt agreed to study chemical aspects of the fungus so that when the genome was known gene activity could be related to what the genes governed. Normal growth ''Allomyces macrogynus'' features defined by Emerson and Emerson and Wilson were of immediate interest for research and teaching because the organism had such clear and interesting structures. The vegetative growth showed the forma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cytoplasm
The cytoplasm describes all the material within a eukaryotic or prokaryotic cell, enclosed by the cell membrane, including the organelles and excluding the nucleus in eukaryotic cells. The material inside the nucleus of a eukaryotic cell and contained within the nuclear membrane is termed the nucleoplasm. The main components of the cytoplasm are the cytosol (a gel-like substance), the cell's internal sub-structures, and various cytoplasmic inclusions. In eukaryotes the cytoplasm also includes the nucleus, and other membrane-bound organelles.The cytoplasm is about 80% water and is usually colorless. The submicroscopic ground cell substance, or cytoplasmic matrix, that remains after the exclusion of the cell organelles and particles is groundplasm. It is the hyaloplasm of light microscopy, a highly complex, polyphasic system in which all resolvable cytoplasmic elements are suspended, including the larger organelles such as the ribosomes, mitochondria, plant plasti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
