|
Geosmithia Langdonii
''Geosmithia'' is a genus of anamorphic fungi of uncertain familial placement in the order Hypocreales. The genus, circumscribed by Australian mycologist John Pitt in 1979, is widely distributed. A 2008 estimate placed ten species in the genus, but several new species have since been described. Thousand cankers disease, which affects economically important black walnut (''Juglans nigra'') populations in North America, is caused by '' Geosmithia morbida''. Species in the genus are generally similar to those in ''Penicillium'', but can be distinguished from them by forming cylindrical conidia from rough-walled phialides. Additionally, the conidia of ''Geosmithia'' do not have a green color, in contrast to the characteristic blue-grey or green-grey conidia of ''Penicillium''. Some ''Geosmithia'' species have teleomorphic forms that are classified in the genus ''Talaromyces''. However, ''Geosmithia'' is a polyphyletic taxon with evolutionary affinities to at least three groups of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosmithia Morbida
''Geosmithia morbida'' is a species of anamorphic fungus in the Bionectriaceae family that, together with the activity of the walnut twig beetle, causes thousand cankers disease in species of walnut trees (''Juglans spp.''). It was described as new to science in 2010 from specimens collected in the southern United States. The fungus, transmitted by the walnut twig beetle, ''Pityophthorus juglandis'', is known from the western USA from California to Colorado. The cankers resulting from infection restrict nutrient flow and typically kill the host tree within three to four years. Based on closeness of internal transcribed spacer DNA, the closest relative of ''G. morbida'' is '' G. fassatiae''. The specific epithet ''morbida'' refers to the deadly pathogenic In biology, a pathogen ( el, πάθος, "suffering", "passion" and , "producer of") in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an inf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teleomorph, Anamorph And Holomorph
In mycology, the terms teleomorph, anamorph, and holomorph apply to portions of the life cycles of fungi in the phyla Ascomycota and Basidiomycota: *Teleomorph: the sexual reproductive stage (morph), typically a fruiting body. *Anamorph: an asexual reproductive stage (morph), often mold-like. When a single fungus produces multiple morphologically distinct anamorphs, these are called synanamorphs. *Holomorph: the whole fungus, including anamorphs and teleomorph. Dual naming of fungi Fungi are classified primarily based on the structures associated with sexual reproduction, which tend to be evolutionarily conserved. However, many fungi reproduce only asexually, and cannot easily be classified based on sexual characteristics; some produce both asexual and sexual states. These problematic species are often members of the Ascomycota, but a few of them belong to the Basidiomycota. Even among fungi that reproduce both sexually and asexually, often only one method of reproduction can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosmithia Lavendula
''Geosmithia'' is a genus of anamorphic fungi of uncertain familial placement in the order Hypocreales. The genus, circumscribed by Australian mycologist John Pitt in 1979, is widely distributed. A 2008 estimate placed ten species in the genus, but several new species have since been described. Thousand cankers disease, which affects economically important black walnut (''Juglans nigra'') populations in North America, is caused by '' Geosmithia morbida''. Species in the genus are generally similar to those in ''Penicillium'', but can be distinguished from them by forming cylindrical conidia from rough-walled phialides. Additionally, the conidia of ''Geosmithia'' do not have a green color, in contrast to the characteristic blue-grey or green-grey conidia of ''Penicillium''. Some ''Geosmithia'' species have teleomorphic forms that are classified in the genus ''Talaromyces''. However, ''Geosmithia'' is a polyphyletic taxon with evolutionary affinities to at least three groups of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosmithia Langdonii
''Geosmithia'' is a genus of anamorphic fungi of uncertain familial placement in the order Hypocreales. The genus, circumscribed by Australian mycologist John Pitt in 1979, is widely distributed. A 2008 estimate placed ten species in the genus, but several new species have since been described. Thousand cankers disease, which affects economically important black walnut (''Juglans nigra'') populations in North America, is caused by '' Geosmithia morbida''. Species in the genus are generally similar to those in ''Penicillium'', but can be distinguished from them by forming cylindrical conidia from rough-walled phialides. Additionally, the conidia of ''Geosmithia'' do not have a green color, in contrast to the characteristic blue-grey or green-grey conidia of ''Penicillium''. Some ''Geosmithia'' species have teleomorphic forms that are classified in the genus ''Talaromyces''. However, ''Geosmithia'' is a polyphyletic taxon with evolutionary affinities to at least three groups of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosmithia Flava
''Geosmithia'' is a genus of anamorphic fungi of uncertain family (biology), familial placement in the order Hypocreales. The genus, circumscribed by Australian mycologist John Pitt in 1979, is widely distributed. A 2008 estimate placed ten species in the genus, but several new species have since been described. Thousand cankers disease, which affects economically important black walnut (''Juglans nigra'') populations in North America, is caused by ''Geosmithia morbida''. Species in the genus are generally similar to those in ''Penicillium'', but can be distinguished from them by forming cylindrical conidia from rough-walled phialides. Additionally, the conidia of ''Geosmithia'' do not have a green color, in contrast to the characteristic blue-grey or green-grey conidia of ''Penicillium''. Some ''Geosmithia'' species have Teleomorph, anamorph and holomorph, teleomorphic forms that are classified in the genus ''Talaromyces''. However, ''Geosmithia'' is a polyphyletic taxon with evo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosmithia Fassatiae
''Geosmithia'' is a genus of anamorphic fungi of uncertain familial placement in the order Hypocreales. The genus, circumscribed by Australian mycologist John Pitt in 1979, is widely distributed. A 2008 estimate placed ten species in the genus, but several new species have since been described. Thousand cankers disease, which affects economically important black walnut (''Juglans nigra'') populations in North America, is caused by ''Geosmithia morbida''. Species in the genus are generally similar to those in ''Penicillium'', but can be distinguished from them by forming cylindrical conidia from rough-walled phialides. Additionally, the conidia of ''Geosmithia'' do not have a green color, in contrast to the characteristic blue-grey or green-grey conidia of ''Penicillium''. Some ''Geosmithia'' species have teleomorphic forms that are classified in the genus ''Talaromyces''. However, ''Geosmithia'' is a polyphyletic taxon with evolutionary affinities to at least three groups of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosmithia Eupagioceri
''Geosmithia'' is a genus of anamorphic fungi of uncertain familial placement in the order Hypocreales. The genus, circumscribed by Australian mycologist John Pitt in 1979, is widely distributed. A 2008 estimate placed ten species in the genus, but several new species have since been described. Thousand cankers disease, which affects economically important black walnut (''Juglans nigra'') populations in North America, is caused by ''Geosmithia morbida''. Species in the genus are generally similar to those in ''Penicillium'', but can be distinguished from them by forming cylindrical conidia from rough-walled phialides. Additionally, the conidia of ''Geosmithia'' do not have a green color, in contrast to the characteristic blue-grey or green-grey conidia of ''Penicillium''. Some ''Geosmithia'' species have teleomorphic forms that are classified in the genus ''Talaromyces''. However, ''Geosmithia'' is a polyphyletic taxon with evolutionary affinities to at least three groups of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosmithia Emersonii
''Geosmithia'' is a genus of anamorphic fungi of uncertain familial placement in the order Hypocreales. The genus, circumscribed by Australian mycologist John Pitt in 1979, is widely distributed. A 2008 estimate placed ten species in the genus, but several new species have since been described. Thousand cankers disease, which affects economically important black walnut (''Juglans nigra'') populations in North America, is caused by ''Geosmithia morbida''. Species in the genus are generally similar to those in ''Penicillium'', but can be distinguished from them by forming cylindrical conidia from rough-walled phialides. Additionally, the conidia of ''Geosmithia'' do not have a green color, in contrast to the characteristic blue-grey or green-grey conidia of ''Penicillium''. Some ''Geosmithia'' species have teleomorphic forms that are classified in the genus ''Talaromyces''. However, ''Geosmithia'' is a polyphyletic taxon with evolutionary affinities to at least three groups of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosmithia Eburnea
''Geosmithia'' is a genus of anamorphic fungi of uncertain familial placement in the order Hypocreales. The genus, circumscribed by Australian mycologist John Pitt in 1979, is widely distributed. A 2008 estimate placed ten species in the genus, but several new species have since been described. Thousand cankers disease, which affects economically important black walnut (''Juglans nigra'') populations in North America, is caused by ''Geosmithia morbida''. Species in the genus are generally similar to those in ''Penicillium'', but can be distinguished from them by forming cylindrical conidia from rough-walled phialides. Additionally, the conidia of ''Geosmithia'' do not have a green color, in contrast to the characteristic blue-grey or green-grey conidia of ''Penicillium''. Some ''Geosmithia'' species have teleomorphic forms that are classified in the genus ''Talaromyces''. However, ''Geosmithia'' is a polyphyletic taxon with evolutionary affinities to at least three groups of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosmithia Cnesini
''Geosmithia'' is a genus of anamorphic fungi of uncertain familial placement in the order Hypocreales. The genus, circumscribed by Australian mycologist John Pitt in 1979, is widely distributed. A 2008 estimate placed ten species in the genus, but several new species have since been described. Thousand cankers disease, which affects economically important black walnut (''Juglans nigra'') populations in North America, is caused by ''Geosmithia morbida''. Species in the genus are generally similar to those in ''Penicillium'', but can be distinguished from them by forming cylindrical conidia from rough-walled phialides. Additionally, the conidia of ''Geosmithia'' do not have a green color, in contrast to the characteristic blue-grey or green-grey conidia of ''Penicillium''. Some ''Geosmithia'' species have teleomorphic forms that are classified in the genus ''Talaromyces''. However, ''Geosmithia'' is a polyphyletic taxon with evolutionary affinities to at least three groups of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosmithia Carolliae
''Geosmithia'' is a genus of anamorphic fungi of uncertain familial placement in the order Hypocreales. The genus, circumscribed by Australian mycologist John Pitt in 1979, is widely distributed. A 2008 estimate placed ten species in the genus, but several new species have since been described. Thousand cankers disease, which affects economically important black walnut (''Juglans nigra'') populations in North America, is caused by ''Geosmithia morbida''. Species in the genus are generally similar to those in ''Penicillium'', but can be distinguished from them by forming cylindrical conidia from rough-walled phialides. Additionally, the conidia of ''Geosmithia'' do not have a green color, in contrast to the characteristic blue-grey or green-grey conidia of ''Penicillium''. Some ''Geosmithia'' species have teleomorphic forms that are classified in the genus ''Talaromyces''. However, ''Geosmithia'' is a polyphyletic taxon with evolutionary affinities to at least three groups of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosmithia Brunnea
''Geosmithia'' is a genus of anamorphic fungi of uncertain familial placement in the order Hypocreales. The genus, circumscribed by Australian mycologist John Pitt in 1979, is widely distributed. A 2008 estimate placed ten species in the genus, but several new species have since been described. Thousand cankers disease, which affects economically important black walnut (''Juglans nigra'') populations in North America, is caused by ''Geosmithia morbida''. Species in the genus are generally similar to those in ''Penicillium'', but can be distinguished from them by forming cylindrical conidia from rough-walled phialides. Additionally, the conidia of ''Geosmithia'' do not have a green color, in contrast to the characteristic blue-grey or green-grey conidia of ''Penicillium''. Some ''Geosmithia'' species have teleomorphic forms that are classified in the genus ''Talaromyces''. However, ''Geosmithia'' is a polyphyletic taxon with evolutionary affinities to at least three groups of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |