Ophiosphaerella

	Ophiosphaerella ''Ophiosphaerella'' is a genus of fungi in the family Phaeosphaeriaceae. The genus was described by Italian-Argentinian botanist and mycologist Carlos Luigi Spegazzini in 1909. Several species are pathogens of turfgrass, causing darkly pigmented hyphae on roots known as "dead spot". '' Ophiosphaerella korrae'', '' O. narmari'', and '' O. herpotricha'' affect bermudagrass (''Cynodon'' species), while the latter fungus also causes dead spot in buffalo grass Buffalo grass may refer to * Buffalo grass, sweet vernal grass or vanilla grass (''Anthoxanthum odoratum'') * Buffalo grass (''Bouteloua dactyloides'') * Buffalo grass (''Brachiaria mutica'') * Buffalo grass or sweet grass (''Hierochloe odorata'') ... (''Bouteloua dactyloides''). '' Ophiosphaerella korrae'' is a cause of necrotic ring spot in creeping red fescue (''Festuca rubra''). References Dothideomycetes genera Phaeosphaeriaceae {{Pleosporales stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Ophiosphaerella Korrae Necrotic ring spot is a common disease of turf caused by soil borne fungi (''Ophiosphaerella korrae'') that mainly infects roots (4). It is an important disease as it destroys the appearance of turfgrasses on park, playing fields and golf courses. Necrotic Ring Spot is caused by a fungal pathogen that is an ascomycete that produces ascospores in an ascocarp (6). They survive over winter, or any unfavorable condition as sclerotia. Most infection occurs in spring and fall when the temperature is about 13 to 28°C (5). The primary hosts of this disease are cool-season grasses such as Kentucky bluegrass and annual bluegrass (6). Once turf is infected with ''O. korrae'', it kills turf roots and crowns. Symptoms of the disease are quite noticeable since they appear as large yellow ring-shaped patches of dead turf. Management of the disease is often uneasy and requires application of multiple controls. The disease can be controlled by many different kind of controls including chemical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Phaeosphaeriaceae The Phaeosphaeriaceae are a family of fungi in the order Pleosporales. Species in the family have a cosmopolitan distribution, and are generally nectrotrophic or saprobic on a wide range of plants. Genera list '' Barria'' '' Bricookea'' '' Carinispora'' '' Chaetoplea'' - placement tentative '' Didymocyrtis'' '' Eudarluca'' - placement tentative '' Hadrospora'' '' Isthmosporella'' '' Katumotoa'' '' Lautitia'' - placement tentative ''Metameris'' '' Mixtura'' ''Neophaeosphaeria'' ''Nodulosphaeria'' ''Ophiosphaerella'' '' Phaeosphaeria'' '' Phaeosphaeriopsis'' '' Setomelanomma'' * '' Stagonospora'' ''Teratosphaeria'' - placement tentative ''Wilmia ''Wilmia'' is a genus of fungi in the family Phaeosphaeriaceae. This is a monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not inc ...'' References Bibliography Dothideomycetes families Tax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Hypha A hypha (; ) is a long, branching, filamentous structure of a fungus, oomycete, or actinobacterium. In most fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium. Structure A hypha consists of one or more cells surrounded by a tubular cell wall. In most fungi, hyphae are divided into cells by internal cross-walls called "septa" (singular septum). Septa are usually perforated by pores large enough for ribosomes, mitochondria, and sometimes nuclei to flow between cells. The major structural polymer in fungal cell walls is typically chitin, in contrast to plants and oomycetes that have cellulosic cell walls. Some fungi have aseptate hyphae, meaning their hyphae are not partitioned by septa. Hyphae have an average diameter of 4–6 µm. Growth Hyphae grow at their tips. During tip growth, cell walls are extended by the external assembly and polymerization of cell wall components, and the internal production of new cell membran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]