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Ceratocystis Coerulescens
''Ceratocystis coerulescens'' is an ascomycete fungus and the causal agent of sapstreak disease in sugar maple trees. There is debate about whether it is one species or two; the second being ''Ceratocystis virescens.'' For simplicity, this page will refer to this pathogen as one species. It is also known by its anamorph name ''Endoconidiophora virescens.'' Host and symptoms This fungus is often found as a saprophyte on logs of woody species. It causes sapstreak disease in just one host species: ''Acer saccharum'', commonly known as the sugar maple or rock maple. Symptoms include a sparse crown, dieback, dwarfed leaves, and cankers. Infected trees may die suddenly or languish for 2–4 years. The symptom most characteristic of sapstreak disease is yellowish-green stained wood that is also very moist. Once the wood is cut and dries, the stains turn light brown, so they're difficult to see and diagnose at that point. Disease cycle As an ascomycete, ''Ceratocystis coerulescens'' pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acer Saccharum
''Acer saccharum'', the sugar maple, is a species of flowering plant in the soapberry and lychee family Sapindaceae. It is native to the hardwood forests of eastern Canada and eastern United States. Sugar maple is best known for being the primary source of maple syrup and for its brightly colored fall foliage. It may also be known as "rock maple", "sugar tree", "birds-eye maple", "sweet maple", "curly maple", or "hard maple", particularly when referring to the wood. Description ''Acer saccharum'' is a deciduous tree normally reaching heights of , and exceptionally up to . A 10-year-old tree is typically about tall. As with most trees, forest-grown sugar maples form a much taller trunk and narrower canopy than open-growth ones. The leaves are deciduous, up to long and wide, palmate, with five lobes and borne in opposite pairs. The basal lobes are relatively small, while the upper lobes are larger and deeply notched. In contrast with the angular notching of the silver ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascocarp
An ascocarp, or ascoma (), 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. Ascocarps are most commonly bowl-shaped (apothecia) but may take on a spherical or flask-like form that has a pore opening to release spores (perithecia) or no opening (cleistothecia). Classification The ascocarp is classified according to its placement (in ways not fundamental to the basic taxonomy). It is called ''epigeous'' if it grows above ground, as with the morels, while underground ascocarps, such as truffles, are termed ''hypogeous''. The structure enclosing the hymenium is divided into the types described below (apothecium, cleistothecium, etc.) and this character ''is'' important for the taxonomic classification of the fungus. Apothecia can be relatively large and fleshy, whereas the others are microscopic—about the size of flecks of g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sugar Bush
Sugar bush refers to a forest stand of maple trees which is utilized for maple syrup. This was originally an Indigenous camp set up for several weeks each spring, beginning when the ice began to melt and ending when the tree buds begin to open. At a traditional sugarbush, all the trees were hand tapped and the sap was boiled over wood fires. The Anishinaabe (Ojibwe) peoples have been doing sugarbush for generations and consider the process both a part of food and of medicine. The tree canopy is dominated by sugar maple or black maple. Other tree species, if present, form only a small fraction of the total tree cover. In the Canadian provinces of New Brunswick, Ontario, Quebec and Nova Scotia, and in some New England states, many sugar bushes have a sugar shack A sugar shack (french: cabane à sucre), also known as sap house, sugar house, sugar shanty or sugar cabin is a commercial establishment, primarily found in Eastern Canada and northern New England. Sugar shac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stained Wound
A stain is a discoloration that can be clearly distinguished from the surface, material, or medium it is found upon. They are caused by the chemical or physical interaction of two dissimilar materials. Accidental staining may make materials appear used, degraded or permanently unclean. Intentional staining is used in biochemical research and for artistic effect, such as wood staining, rust staining and stained glass. Types There can be intentional stains (such as wood stains or paint), indicative stains (such as food coloring or adding a substance to make bacteria visible under a microscope), natural stains (such as rust on iron or a patina on bronze), and accidental stains such as ketchup and synthetic oil on clothing. Different types of material can be stained by different substances, and stain resistance is an important characteristic in modern textile engineering. Formation The primary method of stain formation is surface stains, where the staining substance i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armillaria
''Armillaria'' is a genus of fungi that includes the '' A. mellea'' species known as honey fungi that live on trees and woody shrubs. It includes about 10 species formerly categorized summarily as ''A. mellea''. ''Armillarias'' are long-lived and form the largest living fungi in the world. The largest known organism (of the species '' Armillaria ostoyae'') covers more than in Oregon's Malheur National Forest and is estimated to be 2,500 years old. Some species of ''Armillaria'' display bioluminescence, resulting in foxfire. ''Armillaria'' can be a destructive forest pathogen. It causes "white rot" root disease (see Plant pathology section) of forests, which distinguishes it from ''Tricholoma'', a mycorrhizal (non-parasitic) genus. Because ''Armillaria'' is a facultative saprophyte, it also feeds on dead plant material, allowing it to kill its host, unlike parasites that must moderate their growth to avoid host death. Description The basidiocarp (reproductive str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xylaria
''Xylaria'' is a genus of ascomycetous fungi commonly found growing on dead wood. The name comes from the Greek ''xýlon'' meaning ''wood'' (see xylem). Two of the common species of the genus are ''Xylaria hypoxylon'' and ''Xylaria polymorpha''. ''Xylaria hypoxylon'', known by the common names stag's horn and candle-snuff fungus, is the most conspicuous because of its erect, 3–7 cm tall, antler-like ascocarps (fruitbodies) which are black at the base (where the perithecia are embedded) but white and branched towards the top, where the fruiting bodies produce white conidia (asexual spores). ''Xylaria polymorpha'', dead man's fingers, often grows in finger-like clusters from the base of a tree or from wood just below ground level. This is a primary fungus utilized in the spalting of sugar maple and other hardwoods. '' Xylaria longipes'', known by the common name dead moll's fingers, allegedly improves the quality of the wood used in string instruments. It has not been li ... [...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'' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microascales
The Microascales are an order of fungi in the class Sordariomycetes, subclass Hypocreomycetidae. This is a relatively small order of mostly saprobic fungi that live in soil, rotting vegetation and dung. Some species are plant pathogens, such as ''Ceratocystis fimbriata'', transmitted by beetles to living trees and causing cacao wilt and many other economically important diseases. Species in the genus ''Pseudallescheria'' (family Microascaceae) are pathogenic to humans The order was circumscribed in 1980. Description The Microascales are characterized by a lack of stroma, black perithecial ascomata with long necks or rarely with cleistothecial ascomata that lack paraphyses. They have roughly spherical and short-lived asci that develop singly or in chains. Nonseptate, colorless ascospores often have ornamenting ridges or wings. The anamorphs of the family Microascaceae produce percurrently proliferating conidiogenous cells (annellides) and sometimes chlamydospore-like or aleurio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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