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Ascochyta Pisi
''Ascochyta pisi'' is a fungal plant pathogen that causes ascochyta blight on pea, causing lesions of stems, leaves, and pods. These same symptoms can also be caused by '' Ascochyta pinodes'', and the two fungi are not easily distinguishable. Hosts and symptoms The host of ''Ascochyta pisi'' is the field pea (''Pisum sativum L.''). ''Ascochyta pisi'' also infects 20 genera of plants and more than 50 plant species including soybean, sweet pea, lentil, alfalfa, common bean, clover, black-eyed-pea, and broad bean. Field pea is an annual, cool season legume that is native to northwest and southwest Asia. Ascochyta blight of peas is one of the most important diseases of pea in terms of acreage affected. Yield losses of 5 to 15% are common during ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berk
Berk may refer to: * Berk (name), a surname, given name, or any of several people with that name * Berk, Bolu, Turkey, a village * Berk Trade and Business School, New York City * Berk, a fictional island in the ''How to Train Your Dragon'' series of books and films * , a torpedo cruiser of the Ottoman Navy later renamed ''Berk'' * Berk, rhyming slang#Taboo terms, rhyming slang often used to mean "foolish person" * ''Berk.'', taxonomic author abbreviation of Miles Joseph Berkeley (1803–1889), English cryptogamist and founder of the science of plant pathology See also * Berk–Tabatznik syndrome, a medical condition * De Berk (other) * Berks (other) * Birk (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascochyta Pisi 226
''Ascochyta'' is a genus of ascomycete fungi, containing several species that are pathogenic to plants, particularly cereal crops. The taxonomy of this genus is still incomplete. The genus was first described in 1830 by Marie-Anne Libert, who regarded the spores as minute asci and the cell contents as spherical spores. Numerous revisions to the members of the genus and its description were made for the next several years. Species that are plant pathogenic on cereals include, '' A. hordei'', '' A. graminea'', '' A. sorghi'', '' A. tritici''. Symptoms are usually elliptical spots that are initially chlorotic and later become a necrotic brown. Management includes fungicide applications and sanitation of diseased plant tissue debris. Some of these pathogens in the genus ''Ascochyta'' affect grass species, including grains. Some species of ''Ascochyta'' *'' Ascochyta asparagina'', Ascochyta blight *''Ascochyta bohemica'' *''Ascochyta boltshauseri'' *''Ascochyta caricae'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungus
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, 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 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 organisms, named the ''Eumycota'' (''true f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Pathology
Plant pathology (also phytopathology) is the scientific study of diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungus, fungi, oomycetes, bacterium, bacteria, plant virus, viruses, viroids, virus-like organisms, phytoplasmas, protozoa, nematodes and parasitic plants. Not included are ectoparasites like insects, mites, vertebrate, or other Plant defense against herbivory, pests that affect plant health by eating Plant tissue, plant tissues. Plant pathology also involves the study of pathogen identification, disease etiology, disease cycles, economic impact, plant disease epidemiology, plant disease resistance, how plant diseases affect humans and animals, pathosystem genetics, and management of plant diseases. Overview Control of plant diseases is crucial to the reliable production of food, and it provides significant problems in agricultural use of land, wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascochyta Pinodes
''Didymella pinodes'' (syn. ''Mycosphaerella pinodes'') is a hemibiotrophic fungal plant pathogen and the causal agent of ascochyta blight on pea plants. It is infective on several species such as ''Lathyrus sativus'', ''Lupinus albus'', ''Medicago spp.'', ''Trifolium spp.'', ''Vicia sativa'', and ''Vicia articulata'', and is thus defined as broadrange pathogen. Symptoms Symptoms include lesions on leaves, stem and pods of plants. The disease is difficult to distinguish from blight caused by ''Ascochyta pisi'', though ''D. pinodes'' is the more aggressive of the two pathogens. Epidemiology The disease cycle starts with dissemination of ascospores after which germination pycnidia rapidly develop. Pycnidiaspores quickly disperse by rain splashes are responsible for reinfection over short distances. Consequently, production of pseudothecia An ascocarp, or ascoma (), is the fruiting body ( sporocarp) of an ascomycete phylum fungus. It consists of very tightly interwoven hy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mycosphaerella Pinodes '', though ''D. pinodes'' is the more aggressive of the two pathogens.
''Didymella pinodes'' (syn. ''Mycosphaerella pinodes'') is a hemibiotrophic fungal plant pathogen and the causal agent of ascochyta blight on pea plants. It is infective on several species such as '' Lathyrus sativus'', '' Lupinus albus'', ''Medicago spp.'', ''Trifolium spp.'', '' Vicia sativa'', and ''Vicia articulata'', and is thus defined as broadrange pathogen. Symptoms Symptoms include lesions on leaves, stem and pods of plants. The disease is difficult to distinguish from blight caused by ''Ascochyta pisi ''Ascochyta pisi'' is a fungal plant pathogen that causes ascochyta blight on pea, causing lesions of stems, leaves, and pods. These same symptoms can also be caused by '' Ascochyta pinodes'', and the two fungi are not easily distinguishable. Epidemiology The disease cycle starts with dissemination of ascospores after which germination pycnidia ra ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoma Medicaginis Var
''Phoma'' is a genus of common coelomycetous soil fungi. It contains many plant pathogenic species. Description Spores are colorless and unicellular. The pycnidia are black and depressed in the tissues of the host. ''Phoma'' is arbitrarily limited to those species in which the spores are less than 15 µm as the larger spored forms have been placed in the genus ''Macrophoma''. The most important species include ''Phoma beta'' which is the cause of the heart rot and blight of beets, ''Phoma batata'' that produces a dry rot of sweet potato, and ''Phoma solani''. Taxonomy About 140 ''Phoma'' taxa have been defined and recognized which may be divided into two large groups: (i) plurivorous fungi, generally saprobic or weakly parasitic, mainly from temperate regions in Eurasia, but occasionally also found in other parts of the world (including areas with cool or warm climates); and (ii) specific pathogens of cultivated plants. However other estimates place the number o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoma Koolunga
''Phoma'' is a genus of common coelomycetous soil fungi. It contains many plant pathogenic species. Description Spores are colorless and unicellular. The pycnidia are black and depressed in the tissues of the host. ''Phoma'' is arbitrarily limited to those species in which the spores are less than 15 µm as the larger spored forms have been placed in the genus ''Macrophoma''. The most important species include ''Phoma beta'' which is the cause of the heart rot and blight of beets, ''Phoma batata'' that produces a dry rot of sweet potato, and ''Phoma solani''. Taxonomy About 140 ''Phoma'' taxa have been defined and recognized which may be divided into two large groups: (i) plurivorous fungi, generally saprobic or weakly parasitic, mainly from temperate regions in Eurasia, but occasionally also found in other parts of the world (including areas with cool or warm climates); and (ii) specific pathogens of cultivated plants. However other estimates place the number o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Ascochyta Species
This is a list of the fungus species in the genus ''Ascochyta''. Many are plant pathogens. ''Ascochyta'' is an anamorph for many species placed in ''Didymella'' (the teleomorph) but both names refer to the same organism. there are 1,184 species included. There is also one subgenus: ''Ascochyta'' subgen. ''Ascochyta'' Lib..Pl. crypt. Arduenna, fasc. (Liège) 1(Praef.): 8 (1830) A * '' Ascochyta abelmoschi'' * '' Ascochyta abramovii'' * '' Ascochyta abroniae'' * '' Ascochyta abutilonicola'' * '' Ascochyta abutilonis'' * '' Ascochyta acericola'' * '' Ascochyta acerina'' * '' Ascochyta aceris'' * '' Ascochyta achlydis'' * '' Ascochyta achlyicola'' * '' Ascochyta aconitana'' * '' Ascochyta aconiti'' * '' Ascochyta acori'' * '' Ascochyta actaeae'' * '' Ascochyta actinidiae'' * '' Ascochyta aculeorum'' * '' Ascochyta adenocaulonis'' * '' Ascochyta adenophorae'' * '' Ascochyta adenostylis'' * '' Ascochyta adzamethica'' * '' Ascochyta aegilopis'' * '' Ascochy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungal Plant Pathogens And Diseases
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, 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 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 organisms, named the ''Eumycota'' (''true f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eudicot Diseases
The eudicots, Eudicotidae, or eudicotyledons are a clade of flowering plants mainly characterized by having two seed leaves upon germination. The term derives from Dicotyledons. Traditionally they were called tricolpates or non-magnoliid dicots by previous authors. The botanical terms were introduced in 1991 by evolutionary botanist James A. Doyle and paleobotanist Carol L. Hotton to emphasize the later evolutionary divergence of tricolpate dicots from earlier, less specialized, dicots. Numerous familiar plants are eudicots, including many common food plants, trees, and ornamentals. Some common and familiar eudicots include sunflower, dandelion, forget-me-not, cabbage, apple, buttercup, maple, and macadamia. Most leafy trees of midlatitudes also belong to eudicots, with notable exceptions being magnolias and tulip trees which belong to magnoliids, and ''Ginkgo biloba'', which is not an angiosperm. Description The close relationships among flowering plants with tricolpate po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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