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Ophiostoma Novo-ulmi
''Ophiostoma novo-ulmi'' is a species of fungus in the family Ophiostomataceae. It is one of the key causative agents associated with Dutch Elm Disease (DED), along with '' Ophiostoma ulmi'' and '' Ophiostoma himal-ulmi''. Dutch Elm Disease was first identified in Europe during the early 1900s and by the 1940s the disease had spread throughout Europe and into the United States and Canada. Elm trees (''Ulmus'') were heavily used as a trade commodity in logging practices in the late 1800s-1900s. Historically, these trees have seen widespread use as a building material in products such as wheels, chairs, ships, and coffins. Wood from ''Ulmus'' trees has been favored for building due to the trees' ability to withstand prolonged exposure to water without rotting. The adaptability of this tree along with its multitude of applications for building opened up its demand in trading. It has been determined that ''Ophiostoma ulmi'' and ''Ophiostoma novo-ulmi'' have evolved separately fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiostomataceae
The Ophiostomataceae are a family of fungi in the Ascomycota, class Sordariomycetes. The family was circumscribed by J.A. Nannfeldt in 1932. Species in the family have a widespread distribution, and are typically found in temperate regions, as pathogens of both coniferous and deciduous In the fields of horticulture and botany, the term deciduous () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed Leaf, leaves, usually in the autumn; to the shedding of petals, aft ... trees. Genera As accepted by Wijayawardene et al. 2020, with the amount of species in brackets; *'' Afroraffaele'' (1) *'' Aureovirg'' (1) *'' Ceratocystiopsis'' (5) *'' Fragosphaeria'' (2) *'' Graphilbum'' (13) *'' Hawksworthiomyces'' (4) *'' Klasterskya'' (3) *'' Leptographium'' (= '' Grosmannia'', ) (74) *'' Ophiostoma'' (includes ''Hyalorhinocladiella'' and ''Pesotum'' ) (134) *'' Raffaelea'' (33) *'' Sporothrix'' (79) *'' Spum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiostoma Ulmi
''Ophiostoma ulmi'' is a species of fungus in the family Ophiostomataceae. It is one of the causative agents of Dutch elm disease. It was first described under the name ''Graphium ulmi'', and later transferred to the genus '' Ophiostoma''. Dutch elm disease originated in Europe in the early 1900s. Elm trees were once an ecologically valuable tree that dominated mixed broadleaf forests, floodplains, and low areas near rivers and streams. They were planted in urban settings because of their aesthetic appeal and their ability to provide shade due to their V like shape. An outbreak of Dutch elm disease in the 1920s and again in the 1970s was responsible for the death of more than 40 million American elm trees. ''Ophiostoma ulmi'' was the first known cause of Dutch elm disease . Since its discovery in 1910, new forms of the fungus, specifically ''Ophiostoma novo-ulmi,'' have emerged and appear to be more resistant to control measures and more aggressive in their infection. Host ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiostoma Himal-ulmi
''Ophiostoma himal-ulmi'' is a species of fungus in the family Ophiostomataceae. It is one of the causative agents of Dutch elm disease. It was first isolated around breeding galleries of scolytid beetles in the bark of '' Ulmus wallichiana'' (the Himalayan elm). This, together with the fact that it is endemic to the Himalayas, is the reason it is named ''himal-ulmi'' (‘of the Himalayan elm’; means ‘of the elm’). It is outcrossing and heterothallic, with two sexual compatibility types: A and B, occurring in a near 1:1 ratio in nature. It also exhibits a distinctive colony type, an ability to produce synnemata on malt extract agar, production of perithecia An ascocarp, or ascoma (: ascomata), is the fruiting body ( sporocarp) of an ascomycete phylum fungus. It consists of very tightly interwoven hyphae and millions of embedded asci, each of which typically contains four to eight ascospores. Ascoc ... with long necks, a very high level of cerato-ulmin toxin produ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiostomatales
The Ophiostomatales are an order of fungi in the class Sordariomycetes. They are commonly symbionts to insect species, which can be found in numerous cases, including some termites and many bark beetles A bark beetle is the common name for the subfamily of beetles Scolytinae. Previously, this was considered a distinct Family (biology), family (Scolytidae), but is now understood to be a specialized clade of the "true weevil" family (Curculioni .... In the cases of most beetle symbioses, the Ophiostomatales fungi is carried in mycangia, which help keep fungal inoculants close to the beetle at all times. In some cases, the fungi are the main source of food for the beetles. In others, the relationship is not as clear. References Ascomycota orders {{Sordariomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |