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Perigord Truffle
''Tuber melanosporum'', called the black truffle, Périgord truffle or French black truffle, is a species of truffle native to Southern Europe. It is one of the most expensive edible mushrooms in the world. Taxonomy Italian naturalist Carlo Vittadini described the black truffle in 1831. Description External characteristics The round, dark brown fruiting bodies ( ascocarps) have a black-brown skin with small pyramidal cusps. They have a strong, aromatic smell and normally reach a size of up to . Some may be significantly larger, such as a black truffle found in 2012 in Dordogne with a mass of . Their flesh is initially white, then dark. It is permeated by white veins, which turn brown with age. The spores are elliptical and measure about 22–55 µm by 20–35 µm. They are dark brown and covered with large spikes. Aroma The fruiting bodies of the black truffle exude a scent reminiscent of undergrowth, strawberries, wet earth, or dried fruit with a hint of cocoa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carlo Vittadini
Carlo Vittadini (11 June 1800, in Bertonico – 20 November 1865, in Milan) was an Italian physician, doctor and mycology, mycologist. Life He studied in Milan and at the University of Pavia, where he attended the classes given by Giuseppe L. Moretti (1782–1853). He became a doctor of medicine in 1826 with a thesis entitled ''Tentamen mycologicum seu Amanitarum '' where he described 14 species of the genus ''Amanita''. Outside of several publications on diseases of silkworms, he specialised in obstetrics, working in Milan. He is the author of several important works on Italian mushroom species. Works * * ''Monographia tuberacearum'' (Rusconi, Milan, 1831) - Describes 65 species, of which 51 were new. * ''Descrizione dei funghi mangerecci più comuni dell'Italia e de'velenosi che possono co'medesimi confondersi'' (1835) - Describes 56 species, of which 15 were new. * ''Monographia Lycoperdineorum'' (1842) - Completes his 1831 study and describes 50 species, of which 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gene
In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a basic unit of heredity and the molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA. There are two types of molecular genes: protein-coding genes and noncoding genes. During gene expression, the DNA is first copied into RNA. The RNA can be directly functional or be the intermediate template for a protein that performs a function. The transmission of genes to an organism's offspring is the basis of the inheritance of phenotypic traits. These genes make up different DNA sequences called genotypes. Genotypes along with environmental and developmental factors determine what the phenotypes will be. Most biological traits are under the influence of polygenes (many different genes) as well as gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hazel
The hazel (''Corylus'') is a genus of deciduous trees and large shrubs native to the temperate Northern Hemisphere. The genus is usually placed in the birch family Betulaceae,Germplasmgobills Information Network''Corylus''Rushforth, K. (1999). ''Trees of Britain and Europe''. Collins .Huxley, A., ed. (1992). ''New RHS Dictionary of Gardening''. Macmillan . though some botanists split the hazels (with the hornbeams and allied genera) into a separate family Corylaceae. The fruit of the hazel is the hazelnut. Hazels have simple, rounded leaves with double-serrate margins. The flowers are produced very early in spring before the leaves, and are monoecious, with single-sex catkins. The male catkins are pale yellow and long, and the female ones are very small and largely concealed in the buds, with only the bright-red, 1-to-3 mm-long styles visible. The fruits are nuts long and 1–2 cm diameter, surrounded by an involucre (husk) which partly to fully encloses the nut. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Robur
''Quercus robur'', commonly known as common oak, pedunculate oak, European oak or English oak, is a species of flowering plant in the beech and oak family, Fagaceae. It is a large tree, native plant, native to most of Europe west of the Caucasus. It is widely cultivated in temperate regions elsewhere and has escaped into the wild in scattered parts of China and North America. Description ''Quercus robur'' is a large deciduous tree, with circumference of grand oaks from to an exceptional . The Majesty Oak with a circumference of is the thickest tree in Great Britain. The Brureika (Bridal Oak) in Norway with a circumference of (2018) and the Kaive Oak in Latvia with a circumference of are among the thickest trees in Northern Europe. The largest historical oak was known as the Imperial Oak from Bosnia and Herzegovina. This specimen was recorded at 17.5 m in circumference at breast height and estimated at over 150 m³ in total volume. It collapsed in 1998. The species has l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Ilex
''Quercus ilex'', the evergreen oak, holly oak or holm oak is a large evergreen oak native to the Mediterranean region. It is a member of the ''Ilex'' section of the genus, with acorns that mature in a single summer. Description An evergreen tree of large size, attaining in favourable places a height of , and developing in open situations a huge head of densely leafy branches as much across, the terminal portions of the branches usually pendulous in old trees. The trunk is sometimes over in girth. The young shoots are clothed with a close gray felt. The leaves are very variable in shape, most frequently narrowly oval or ovate-lanceolate, long, 1.2–2.5 cm wide, rounded or broadly tapered at the base, pointed, the margins sometimes entire, sometimes (especially on young trees) more or less remotely toothed. When quite young, both surfaces are clothed with whitish down, which soon falls away entirely from the upper surface leaving it a dark glossy green; on the lower s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Symbiont
Symbiosis (from Greek , , "living together", from , , "together", and , bíōsis, "living") is any type of a close and long-term biological interaction between two different biological organisms, be it mutualistic, commensalistic, or parasitic. The organisms, each termed a symbiont, must be of different species. In 1879, Heinrich Anton de Bary defined it as "the living together of unlike organisms". The term was subject to a century-long debate about whether it should specifically denote mutualism, as in lichens. Biologists have now abandoned that restriction. Symbiosis can be obligatory, which means that one or more of the symbionts depend on each other for survival, or facultative (optional), when they can generally live independently. Symbiosis is also classified by physical attachment. When symbionts form a single body it is called conjunctive symbiosis, while all other arrangements are called disjunctive symbiosis."symbiosis." Dorland's Illustrated Medical Dictionary. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ectomycorrhiza
An ectomycorrhiza (from Greek ἐκτός ', "outside", μύκης ', "fungus", and ῥίζα ', "root"; pl. ectomycorrhizas or ectomycorrhizae, abbreviated EcM) is a form of symbiotic relationship that occurs between a fungal symbiont, or mycobiont, and the roots of various plant species. The mycobiont is often from the phyla Basidiomycota and Ascomycota, and more rarely from the Zygomycota. Ectomycorrhizas form on the roots of around 2% of plant species, usually woody plants, including species from the birch, dipterocarp, myrtle, beech, willow, pine and rose families. Research on ectomycorrhizas is increasingly important in areas such as ecosystem management and restoration, forestry and agriculture. Unlike other mycorrhizal relationships, such as arbuscular mycorrhiza and ericoid mycorrhiza, ectomycorrhizal fungi do not penetrate their host's cell walls. Instead they form an entirely intercellular interface known as the Hartig net, consisting of highly branched hyphae form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beaumont - Truffières
Beaumont may refer to: Places Canada * Beaumont, Alberta * Beaumont, Quebec England * Beaumont, Cumbria * Beaumont, Essex **Beaumont Cut, a canal closed in the 1930s * Beaumont Street, Oxford France (communes) * Beaumont, Ardèche * Beaumont, Corrèze * Beaumont, Gers * Beaumont, Haute-Loire * Beaumont, Meurthe-et-Moselle * Beaumont, Puy-de-Dôme * Beaumont, Haute-Savoie * Beaumont, Vienne * Beaumont, Yonne * Beaumont-en-Diois United States * Beaumont, California * Beaumont, Kansas * Beaumont, Mississippi * Beaumont Scout Reservation, High Ridge, Missouri * Beaumont, Ohio * Beaumont, Texas ** Beaumont (Amtrak station) * Beaumont, Wisconsin Elsewhere * Beaumont, South Australia, a suburb of Adelaide * Beaumont, Belgium, in the province of Hainaut, Wallonia * Beaumont, Grand'Anse, commune in Haiti ** Beaumont City the principal city of the Beaumont, Grand'Anse commune * Beaumont, Dublin, a suburb of Dublin, Ireland * Beaumont, New Zealand, a township in Otago * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuber Brumale
''Tuber brumale'', also known as Muscat truffle or winter truffle, is a species of truffle native to Southern Europe. It is naturally present in the soils of many truffle orchards. References * Truffles (fungi) brumale Fungi described in 1831 {{pezizomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuber Aestivum
The summer truffle (''Tuber aestivum'') or burgundy truffle (''Tuber uncinatum'') is a species of truffle, found in almost all European countries. Taxonomy In cuisine and commerce, particularly in France and Italy, the summer truffle (''T. aestivum'') is distinguished from the burgundy truffle (''T. uncinatum''). However, molecular analysis showed in 2004 that these two varieties of truffle are one species. The differences between them are therefore likely due to environmental factors. This article uses the older of the two binomial names, ''T. aestivum'', to designate the species,As recommended by Hall et al., 63. while discussing the characteristics of the two varieties separately. Burgundy truffles Burgundy truffles (french: truffe de Bourgogne; it, tartufo nero di Fragno or ''scorzone'', "bark"; es, trufa de verano; sv, svart sommartryffel), have a hazelnut-like aroma and are prized for their gastronomic qualities. They are used in the ''haute cuisine'' of France and I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuber Indicum
Tubers are a type of enlarged structure used as storage organs for nutrients in some plants. They are used for the plant's perennation (survival of the winter or dry months), to provide energy and nutrients for regrowth during the next growing season, and as a means of asexual reproduction. ''Stem tubers'' form thickened rhizomes (underground stems) or stolons (horizontal connections between organisms); well known species with stem tubers include the potato and yam. Some writers also treat modified lateral roots (''root tubers'') under the definition; these are found in sweet potatoes, cassava, and dahlias. Terminology The term originates from the Latin , meaning "lump, bump, swelling". Some writers define the term "tuber" to mean only structures derived from stems; others use the term for structures derived from stems or roots., p. 124 Stem tubers A stem tuber forms from thickened rhizomes or stolons. The top sides of the tuber produce shoots that grow into typical stems ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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