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Lignin-modifying Enzyme
Lignin-modifying enzymes (LMEs) are various types of enzymes produced by fungi and bacteria that catalyze the breakdown of lignin, a biopolymer commonly found in the cell walls of plants. The terms ligninases and lignases are older names for the same class, but the name "lignin-modifying enzymes" is now preferred, given that these enzymes are not hydrolytic but rather oxidative (electron withdrawing) by their enzymatic mechanisms. LMEs include peroxidases, such as lignin peroxidase (), manganese peroxidase (), versatile peroxidase (), and many phenoloxidases of the laccase type. LMEs have been known to be produced by many species of white rot basidiomycetous fungi, including: ''Phanerochaete chrysosporium'', '' Ceriporiopsis subvermispora'', '' Trametes versicolor'', '' Phlebia radiata'', '' Pleurotus ostreatus'' and '' Pleurotus eryngii''. LMEs are produced not only by wood-white rotting fungi but also by litter-decomposing basidiomycetous fungi such as ''Agaricus bisporus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enzyme
An enzyme () is a protein that acts as a biological catalyst by accelerating chemical reactions. The molecules upon which enzymes may act are called substrate (chemistry), substrates, and the enzyme converts the substrates into different molecules known as product (chemistry), products. Almost all metabolism, metabolic processes in the cell (biology), cell need enzyme catalysis in order to occur at rates fast enough to sustain life. Metabolic pathways depend upon enzymes to catalyze individual steps. The study of enzymes is called ''enzymology'' and the field of pseudoenzyme, pseudoenzyme analysis recognizes that during evolution, some enzymes have lost the ability to carry out biological catalysis, which is often reflected in their amino acid sequences and unusual 'pseudocatalytic' properties. Enzymes are known to catalyze more than 5,000 biochemical reaction types. Other biocatalysts include Ribozyme, catalytic RNA molecules, also called ribozymes. They are sometimes descr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceriporiopsis Subvermispora
''Ceriporiopsis'' is a genus of fungi in the family Phanerochaetaceae. The genus is widely distributed, and, according to a 2008 estimate, contains about 25 species. ''Ceriporiopsis'' was circumscription (taxonomy), circumscribed in 1963 by Polish mycologist Stanislaw Domanski. The genus is a wastebasket taxon, containing "species that share common macroscopic and microscopic characteristics, but are not necessarily related." ''Ceriporiopsis'' species are crust fungi that cause a Wood-decay fungus#White rot, white rot. They have a monomitic hyphal system, containing only generative hyphae, and these hyphae have clamp connections. Species *''Ceriporiopsis alboaurantia'' C.L.Zhao, B.K.Cui & Y.C.Dai (2014) – China *''Ceriporiopsis albonigrescens'' Núñez, Parmasto & Ryvarden (2001) *''Ceriporiopsis allantosporus'' Ryvarden (2016) – Colombia *''Ceriporiopsis aurantitingens'' (Corner) T.Hatt. (2002) *''Ceriporiopsis balaenae'' Niemelä (1985) *''Ceriporiopsis carnegiae'' (D.V.Bax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soil Health
Soil health is a state of a soil meeting its range of ecosystem functions as appropriate to its environment. In more colloquial terms, the health of soil arises from favorable interactions of all soil components (living and non-living) that belong together, as in microbiota, plants and animals. It is possible that a soil can be healthy in terms of ecosystem functioning but not necessarily serve crop production or human nutrition directly, hence the scientific debate on terms and measurements. Soil health testing is pursued as an assessment of this status but tends to be confined largely to agronomic objectives. Soil health depends on soil biodiversity (with a robust soil biology, soil biota), and it can be improved via soil management, especially by care to keep protective living covers on the soil and by natural (carbon-containing) soil amendments. Inorganic fertilizers do not necessarily damage soil health if they are not used in excess, and if they bring about a general improveme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Cycle
The carbon cycle is a part of the biogeochemical cycle where carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of Earth. Other major biogeochemical cycles include the nitrogen cycle and the water cycle. Carbon is the main component of biological compounds as well as a major component of many rocks such as limestone. The carbon cycle comprises a sequence of events that are key to making Earth capable of sustaining life. It describes the movement of carbon as it is recycled and reused throughout the biosphere, as well as long-term processes of carbon sequestration (storage) to and release from carbon sinks. To describe the dynamics of the carbon cycle, a distinction can be made between the ''fast'' and ''slow'' carbon cycle. The fast cycle is also referred to as the ''biological carbon cycle''. Fast cycles can complete within years, moving substances from atmosphere to biosphere, then back to the atmosphere. Slow or geological cycles (a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecology
Ecology () is the natural science of the relationships among living organisms and their Natural environment, environment. Ecology considers organisms at the individual, population, community (ecology), community, ecosystem, and biosphere levels. Ecology overlaps with the closely related sciences of biogeography, evolutionary biology, genetics, ethology, and natural history. Ecology is a branch of biology, and is the study of abundance (ecology), abundance, biomass (ecology), biomass, and distribution of organisms in the context of the environment. It encompasses life processes, interactions, and adaptations; movement of materials and energy through living communities; ecological succession, successional development of ecosystems; cooperation, competition, and predation within and between species; and patterns of biodiversity and its effect on ecosystem processes. Ecology has practical applications in fields such as conservation biology, wetland management, natural resource m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cellulase
Cellulase (; systematic name 4-β-D-glucan 4-glucanohydrolase) is any of several enzymes produced chiefly by fungi, bacteria, and protozoans that catalyze cellulolysis, the decomposition of cellulose and of some related polysaccharides: : Endohydrolysis of (1→4)-β-D-glucosidic linkages in cellulose, lichenin and cereal β-D-glucan The name is also used for any naturally occurring mixture or complex of various such enzymes, that act serially or synergistically to decompose cellulosic material. Cellulases break down the cellulose molecule into monosaccharides ("simple sugars") such as β-glucose, or shorter polysaccharides and oligosaccharides. Cellulose breakdown is of considerable economic importance, because it makes a major constituent of plants available for consumption and use in chemical reactions. The specific reaction involved is the hydrolysis of the 1,4-β-D-glycosidic linkages in cellulose, hemicellulose, lichenin, and cereal beta-D-glucan, β-D-glucans. Because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cellulose
Cellulose is an organic compound with the chemical formula, formula , a polysaccharide consisting of a linear chain of several hundred to many thousands of glycosidic bond, β(1→4) linked glucose, D-glucose units. Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes. Some species of bacteria secrete it to form biofilms. Cellulose is the most abundant biopolymer, organic polymer on Earth. The cellulose content of cotton fibre is 90%, that of wood is 40–50%, and that of dried hemp is approximately 57%. Cellulose is mainly used to produce paperboard and paper. Smaller quantities are converted into a wide variety of derivative products such as cellophane and rayon. Conversion of cellulose from energy crops into biofuels such as cellulosic ethanol is under development as a renewable fuel source. Cellulose for industrial use is mainly obtained from wood pulp and cotton. Cellulose is also greatly affected by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agrocybe
''Agrocybe'' is a genus of mushrooms in the family Strophariaceae (previously placed in the Bolbitiaceae). The genus has a widespread distribution, and contains about 100 species. Distribution In Europe, toxic forms are not normally found, but ''Agrocybe molesta'' could be confused with poisonous white ''Agaricus'' species or with poisonous ''Amanita'' species. Uses Mushroom cultivation began with the Romans and Greeks, who grew the small ''Agrocybe aegerita''. The Romans believed that fungi fruited when lightning struck. ''A. aegerita'' is commonly known as the poplar mushroom, chestnut mushroom or velvet pioppino (Chinese: 茶樹菇). It is a white rot fungus. It is cultivated and sold in Japan, Korea, Australia and China. It is an important valuable source of bioactive secondary metabolites such as indole derivatives with free radical scavenging activity, cylindan with anticancer activity, and also agrocybenine with antifungal activity. '' Agrocybe farinacea'' of Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coprinus
''Coprinus'' is a small genus of mushroom-forming fungi consisting of '' Coprinus comatus''the shaggy ink cap (British) or shaggy mane ( American)and several of its close relatives. Until 2001, ''Coprinus'' was a large genus consisting of all agaric species in which the lamellae autodigested to release their spores. The black ink-like liquid this creates gave these species their common name "ink cap" (British) or "inky cap" ( American). Molecular phylogenetic investigation found that ''Coprinus comatus'' was only a distant relative of the other members of ''Coprinus'', and was closer to genera in the Agaricaceae. Since ''Coprinus comatus'' is the type species of ''Coprinus'', only that species and its close relatives ''C. sterquilinus'' and ''C. spadiceisporus'' retained the name of the genus. The majority of species of ''Coprinus'' were therefore reclassified into three genera placed in Psathyrellaceae: '' Coprinellus'', '' Coprinopsis'', and '' Parasola''. ''Coprinus'' and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agaricus Bisporus
''Agaricus bisporus'', commonly known as the cultivated mushroom, is a basidiomycete mushroom native to grasslands in Eurasia and North America. It is cultivated in more than 70 countries and is one of the most commonly and widely consumed mushrooms in the world. It has two color states while immature – white and brown – both of which have various names, with additional names for the mature state, such as chestnut, portobello, portabellini, button and champignon de Paris. ''A. bisporus'' has some poisonous lookalikes in the wild, such as '' Entoloma sinuatum''. Description The pileus or cap of the original wild species is a pale grey-brown, with broad, flat scales on a paler background and fading toward the margins. It is first hemispherical before flattening out with maturity, typically measuring in diameter. The narrow, crowded gills are free and initially pink, then red-brown, and finally a dark brown with a whitish edge from the cheilocystidia. The cylindrical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saprotrophic Nutrition
Saprotrophic nutrition or lysotrophic nutrition is a process of chemoheterotrophic extracellular digestion involved in the processing of decayed (dead or waste) organic matter. It occurs in saprotrophs, and is most often associated with fungi (e.g. '' Mucor'') and with soil bacteria. Saprotrophic microscopic fungi are sometimes called saprobes. - "The word saprophyte and its derivatives, implying that a fungus is a plant, can be replaced by saprobe (σαπρός + βίος), which is without such implication." Saprotrophic plants or bacterial flora are called saprophytes ( ''sapro-'' 'rotten material' + ''-phyte'' 'plant'), although it is now believed that all plants previously thought to be saprotrophic are in fact parasites of microscopic fungi or of other plants. In fungi, the saprotrophic process is most often facilitated through the active transport of such materials through endocytosis within the internal mycelium and its constituent hyphae. states the purpose of sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleurotus Eryngii
''Pleurotus eryngii'' (also known as king trumpet mushroom, French horn mushroom, eryngi, king oyster mushroom, king brown mushroom, boletus of the steppes, trumpet royale, aliʻi oyster) is an edible mushroom native to Mediterranean regions of Europe, the Middle East, and North Africa, but also grown in many parts of Asia. Taxonomy Its species name is derived from the fact that it grows in association with the roots of '' Eryngium campestre'' or other '' Eryngium'' plants (English names: 'sea holly' or 'eryngo'). ''P. eryngii'' is a species complex, and a number of varieties have been described, with differing plant associates in the carrot family (Apiaceae). * ''Pleurotus eryngii'' var. ''eryngii'' (DC.) Quél 1872 – associated with ''Eryngium'' ssp. * ''Pleurotus eryngii'' var. ''ferulae'' (Lanzi) Sacc. 1887 – associated with '' Ferula communis'' * ''Pleurotus eryngii'' var. ''tingitanus'' Lewinsohn 2002 – associated with '' Ferula tingitana'' * ''Pleurotus eryngii'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
