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Gymnosporangium
''Gymnosporangium'' is a genus of heteroecious plant-pathogenic fungi which alternately infect members of the family Cupressaceae, primarily species in the genus ''Juniperus'' (junipers), and members of the family Rosaceae in the subfamily Amygdaloideae (apples, pears, quinces, shadbush, hawthorns, rowans and their relatives). The common name cedar-apple rusts has been used for these fungi. According to the ''Dictionary of the Fungi'' (10th edition, 2008), there are about 57 species in the genus. In junipers (the primary hosts, see photo), some species form a ball-like gall about 2–4 cm in diameter which produces a set of orange tentacle-like spore tubes called telial horns. These horns expand and have a jelly like consistency when wet. In other species, such as in ''G. clarvariforme'', the telia are produced directly from the bark of the juniper with no obvious gall formation or swelling. The basidiospores are released and travel on the wind until they infect an apple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnosporangium Amelanchieris
''Gymnosporangium'' is a genus of heteroecious Phytopathology, plant-pathogenic fungus, fungi which alternately infect members of the family Cupressaceae, primarily species in the genus ''Juniperus'' (junipers), and members of the family Rosaceae in the subfamily Amygdaloideae (apples, pears, quinces, shadbush, Crataegus, hawthorns, rowans and their relatives). The common name cedar-apple rusts has been used for these fungi. According to the ''Dictionary of the Fungi'' (10th edition, 2008), there are about 57 species in the genus. In junipers (the primary hosts, see photo), some species form a ball-like gall about 2–4 cm in diameter which produces a set of orange tentacle-like spore tubes called telial horns. These horns expand and have a jelly like consistency when wet. In other species, such as in ''G. clarvariforme'', the telia are produced directly from the bark of the juniper with no obvious gall formation or swelling. The Basidiospore, basidiospores are released and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnosporangium Gaeumannii
''Gymnosporangium'' is a genus of heteroecious plant-pathogenic fungi which alternately infect members of the family Cupressaceae, primarily species in the genus ''Juniperus'' (junipers), and members of the family Rosaceae in the subfamily Amygdaloideae (apples, pears, quinces, shadbush, hawthorns, rowans and their relatives). The common name cedar-apple rusts has been used for these fungi. According to the ''Dictionary of the Fungi'' (10th edition, 2008), there are about 57 species in the genus. In junipers (the primary hosts, see photo), some species form a ball-like gall about 2–4 cm in diameter which produces a set of orange tentacle-like spore tubes called telial horns. These horns expand and have a jelly like consistency when wet. In other species, such as in ''G. clarvariforme'', the telia are produced directly from the bark of the juniper with no obvious gall formation or swelling. The basidiospores are released and travel on the wind until they infect an apple, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnosporangium Fusisporum
''Gymnosporangium'' is a genus of heteroecious plant-pathogenic fungi which alternately infect members of the family Cupressaceae, primarily species in the genus ''Juniperus'' (junipers), and members of the family Rosaceae in the subfamily Amygdaloideae (apples, pears, quinces, shadbush, hawthorns, rowans and their relatives). The common name cedar-apple rusts has been used for these fungi. According to the ''Dictionary of the Fungi'' (10th edition, 2008), there are about 57 species in the genus. In junipers (the primary hosts, see photo), some species form a ball-like gall about 2–4 cm in diameter which produces a set of orange tentacle-like spore tubes called telial horns. These horns expand and have a jelly like consistency when wet. In other species, such as in ''G. clarvariforme'', the telia are produced directly from the bark of the juniper with no obvious gall formation or swelling. The basidiospores are released and travel on the wind until they infect an apple, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnosporangium Dobroznakovii
''Gymnosporangium'' is a genus of heteroecious plant-pathogenic fungi which alternately infect members of the family Cupressaceae, primarily species in the genus ''Juniperus'' (junipers), and members of the family Rosaceae in the subfamily Amygdaloideae (apples, pears, quinces, shadbush, hawthorns, rowans and their relatives). The common name cedar-apple rusts has been used for these fungi. According to the ''Dictionary of the Fungi'' (10th edition, 2008), there are about 57 species in the genus. In junipers (the primary hosts, see photo), some species form a ball-like gall about 2–4 cm in diameter which produces a set of orange tentacle-like spore tubes called telial horns. These horns expand and have a jelly like consistency when wet. In other species, such as in ''G. clarvariforme'', the telia are produced directly from the bark of the juniper with no obvious gall formation or swelling. The basidiospores are released and travel on the wind until they infect an apple, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnosporangium Cupressi
''Gymnosporangium'' is a genus of heteroecious plant-pathogenic fungi which alternately infect members of the family Cupressaceae, primarily species in the genus ''Juniperus'' (junipers), and members of the family Rosaceae in the subfamily Amygdaloideae (apples, pears, quinces, shadbush, hawthorns, rowans and their relatives). The common name cedar-apple rusts has been used for these fungi. According to the ''Dictionary of the Fungi'' (10th edition, 2008), there are about 57 species in the genus. In junipers (the primary hosts, see photo), some species form a ball-like gall about 2–4 cm in diameter which produces a set of orange tentacle-like spore tubes called telial horns. These horns expand and have a jelly like consistency when wet. In other species, such as in ''G. clarvariforme'', the telia are produced directly from the bark of the juniper with no obvious gall formation or swelling. The basidiospores are released and travel on the wind until they infect an apple, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnosporangium Cornutum
''Gymnosporangium'' is a genus of heteroecious plant-pathogenic fungi which alternately infect members of the family Cupressaceae, primarily species in the genus ''Juniperus'' (junipers), and members of the family Rosaceae in the subfamily Amygdaloideae (apples, pears, quinces, shadbush, hawthorns, rowans and their relatives). The common name cedar-apple rusts has been used for these fungi. According to the ''Dictionary of the Fungi'' (10th edition, 2008), there are about 57 species in the genus. In junipers (the primary hosts, see photo), some species form a ball-like gall about 2–4 cm in diameter which produces a set of orange tentacle-like spore tubes called telial horns. These horns expand and have a jelly like consistency when wet. In other species, such as in ''G. clarvariforme'', the telia are produced directly from the bark of the juniper with no obvious gall formation or swelling. The basidiospores are released and travel on the wind until they infect an apple, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnosporangium Confusum
''Gymnosporangium'' is a genus of heteroecious plant-pathogenic fungi which alternately infect members of the family Cupressaceae, primarily species in the genus ''Juniperus'' (junipers), and members of the family Rosaceae in the subfamily Amygdaloideae (apples, pears, quinces, shadbush, hawthorns, rowans and their relatives). The common name cedar-apple rusts has been used for these fungi. According to the ''Dictionary of the Fungi'' (10th edition, 2008), there are about 57 species in the genus. In junipers (the primary hosts, see photo), some species form a ball-like gall about 2–4 cm in diameter which produces a set of orange tentacle-like spore tubes called telial horns. These horns expand and have a jelly like consistency when wet. In other species, such as in ''G. clarvariforme'', the telia are produced directly from the bark of the juniper with no obvious gall formation or swelling. The basidiospores are released and travel on the wind until they infect an apple, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnosporangium Globosum
''Gymnosporangium globosum'' is a fungal plant pathogen that causes cedar-hawthorn rust. Hosts and symptoms ''Gymnosporangium globosum'' is a heteroecious rust fungus that requires two hosts to complete its life cycle. Its telial stage occurs on eastern red cedar, Rocky Mountain juniper, southern red cedar, and other common junipers while its aecial stage will be found on apple, crabapple, hawthorne, and occasionally on pear, quince, and serviceberry. The symptoms on the evergreens (telial stage) start with small galls that form on its twigs and small branches. After the galls grow to be ⅛ to ½ inch in diameter, circular indents (similar to those of a golf ball) will begin to appear on the twig side of the gall. Once spring arrives, a reddish-brown structure will begin to grow out of the indent eventually producing orange, jelly-like telial horns. These telial horns can reach up to 4 inches long and can be easily seen. The symptoms of the deciduous trees (aecial stage) begin wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnosporangium Fuscum
''Gymnosporangium sabinae'' (also ''Gymnosporangium fuscum'' and other names) (pear rust, European pear rust, or pear trellis rust) is a fungal heteroecious plant pathogen with ''Juniperus'' (juniper trees and shrubs) as the primary ( telial) host and only ''Pyrus'' (pear trees) as secondary (aecial) hosts. It is one of many types of rust fungi affecting plants. Like many rust diseases, ''G. sabinae'' requires two different hosts to complete its life cycle from year to year. Juniper is the winter host and pear is the most common summer host. Spores (called aeciospores) are produced from the fungal lantern-shaped growths which protrude from the blisters on the underside of the pear leaf which become airborne and infect junipers. This fungus overwinters in swellings or galls on infected twigs and branches of susceptible juniper plants. In the spring after a rain or heavy dew, the galls on the juniper produce tiny dark horn-like growths that become covered with an orange-brown gelat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telial Horns
Telium, plural telia, are structures produced by rust fungi as part of the reproductive cycle. They are typically yellow or orange drying to brown or black and are exclusively a mechanism for the release of teliospores which are released by wind or water to infect the alternate host in the rust life-cycle. The telial stage provides an overwintering strategy in the life cycle of a parasitic heteroecious fungus by producing teliospores; this occurs on cedar trees. A primary aecial stage is spent parasitizing a separate host plant which is a precursor in the life cycle of heteroecious fungi. Teliospores are released from the telia in the spring. The spores can spread many kilometers through the air, however most are spread near the host plant. Host plants There are a number of plants that can be infected by the telial stage. Therefore, the telial stage is considered a pathogen to those plants. A few specific plant pathogenic species are listed here with their hosts. # ''Puccinia grami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnosporangium Clavariiforme
''Gymnosporangium clavariiforme'' (Tongues of Fire) is a species of rust fungus which alternately infects Juniperus and hawthorns. In junipers, the primary hosts, ''G. clavariiforme'' produces a set of orange tentacle-like spore tubes called telial horns. These horns expand and have a jelly like consistency when wet.SORTING OUT GYMNOSPORANGIUM SPECIES - The aecial stage, Field Mycology Volume 7(4), October 2006, Brand, Brand and Shattock. The spores are released and travel on the wind until they infect a hawthorn tree. On the secondary hosts, the fungus produces yellowish depressions on the leaves. It also infects the fruit, which grows whitish tubes like a Medusa In Greek mythology, Medusa (; Ancient Greek: Μέδουσα "guardian, protectress"), also called Gorgo, was one of the three monstrous Gorgons, generally described as winged human females with living venomous snakes in place of hair. Those ... head. These are the spore tubes. The spores must then in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnosporangium Clavipes
''Gymnosporangium clavipes'' is a plant pathogen, a fungus that causes cedar-quince rust. Similar to ''Gymnosporangium juniperi-virginianae'' and ''Gymnosporangium globosum'', the fungus infects a wide range of Rosaceae, such as apple, hawthorn and quince trees, and also requires an evergreen host such as eastern red cedar ''Juniperus virginiana'', also known as red cedar, eastern red cedar, Virginian juniper, eastern juniper, red juniper, and other local names, is a species of juniper native to eastern North America from southeastern Canada to the Gulf of Mexico a ... or a number of other juniper species to complete its life cycle.James SchusterCedar-Quince Rust Accessed July 16, 2008. References External links Pucciniales Apple tree diseases Fruit tree diseases Fungal tree pathogens and diseases Galls Fungi described in 1873 {{fungus-tree-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
