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Broad Bean Wilt Virus 1
''Broad bean wilt virus 1'' (BBWVI) is a plant pathogenic virus of the order ''Picornavirales'', family ''Secoviridae'', subfamily ''Comovirinae'', genus ''Fabavirus''. Description BBWV was first isolated from broad beans (''Vicia faba'') in Australia in 1947, and is transmitted by aphids. Despite its name, BBWV has a wide range of hosts including both monocotyledons and dicotyledons, but mainly the latter. By 1991 177 species in 39 families had been reported as being infected with BBWV. These include perennial bulbous ornamentals such as ''Narcissus tazetta ''Narcissus tazetta'' (paperwhite, bunch-flowered narcissus, bunch-flowered daffodil, Chinese sacred lily, cream narcissus, joss flower, polyanthus narcissus) is a perennial ornamental plant that grows from a bulb. Cultivars of ''N. tazetta'' inc ...''. Taxonomy ''Broad bean wilt virus 1'' is one of two similar species (BBWV) of a total of seven in the genus ''Fabavirus'', the other being ''Broad bean wilt virus 2.'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant
Plants are predominantly Photosynthesis, photosynthetic eukaryotes of the Kingdom (biology), kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclude the fungi and some algae, as well as the prokaryotes (the archaea and bacteria). By one definition, plants form the clade Viridiplantae (Latin name for "green plants") which is sister of the Glaucophyte, Glaucophyta, and consists of the green algae and Embryophyte, Embryophyta (land plants). The latter includes the flowering plants, conifers and other gymnosperms, ferns and Fern ally, their allies, hornworts, liverworts, and mosses. Most plants are multicellular organisms. Green plants obtain most of their energy from sunlight via photosynthesis by primary chloroplasts that are derived from endosymbiosis with cyanobacteria. Their chloroplasts contain chlorophylls a and b, which gives them their green colo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Virus
Plant viruses are viruses that affect plants. Like all other viruses, plant viruses are obligate intracellular parasites that do not have the molecular machinery to replicate without a host. Plant viruses can be pathogenic to higher plants. Most plant viruses are rod-shaped, with protein discs forming a tube surrounding the viral genome; isometric particles are another common structure. They rarely have an envelope. The great majority have an RNA genome, which is usually small and single stranded (ss), but some viruses have double-stranded (ds) RNA, ssDNA or dsDNA genomes. Although plant viruses are not as well understood as their animal counterparts, one plant virus has become very recognizable: ''tobacco mosaic virus'' (TMV), the first virus to be discovered. This and other viruses cause an estimated US$60 billion loss in crop yields worldwide each year. Plant viruses are grouped into 73 genera and 49 families. However, these figures relate only to cultivated plants, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picornavirales
''Picornavirales'' is an order of viruses with vertebrate, invertebrate, protist and plant hosts. The name has a dual etymology. First, ''picorna-'' is an acronym for poliovirus, insensitivity to ether, coxsackievirus, orphan virus, rhinovirus, and ribonucleic acid. Secondly, pico-, meaning extremely small, combines with RNA to describe these very small RNA viruses. The order comprises viruses that historically are referred to as picorna-like viruses. Characteristics The families within this order share a number of common features: * The virions are non- enveloped, icosahedral, and about 30 nanometers in diameter. * The capsid has a "pseudo T=3" structure, and is composed of 60 protomers each made of three similar-sized but nonidentical beta barrels. * The genome is made of one or a few single-stranded RNA(s) serving directly as mRNA, without overlapping open reading frames. * The genome has a small protein, VPg, covalently attached to its 5' end, and usually a pol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secoviridae
''Secoviridae'' is a family of viruses in the order '' Picornavirales''. Plants serve as natural hosts. There are 8 genera and 86 species in this family, one of which is unassigned to a genus. The family was created in 2009 with the grouping of families ''Sequiviridae'', now dissolved, and ''Comoviridae'', now subfamily ''Comovirinae'', along with the then unassigned genera ''Cheravirus'', ''Sadwavirus'', and ''Torradovirus''. Taxonomy The family includes the following genera (-''virinae'' denotes subfamily and -''virus'' denotes genus): * '' Comovirinae'' ** '' Comovirus'' ** '' Fabavirus'' ** '' Nepovirus'' * Unassigned to a subfamily: ** '' Cheravirus'' ** '' Sadwavirus'' ** '' Sequivirus'' ** '' Torradovirus'' ** '' Waikavirus'' Lastly, one species is unassigned to a genus: ''Strawberry latent ringspot virus Strawberry latent ringspot virus (SLRSV) is a plant pathogenic virus in an Unassigned family. Its entry in the ICTV database indicates this virus is a Sadwavirus bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comovirinae
''Comovirinae'' is a subfamily of viruses in the order ''Picornavirales'', in the family ''Secoviridae''; its genera were formerly classified in the family ''Comoviridae''. Plants serve as natural hosts. There are 62 species in this subfamily, assigned to 3 genera. Taxonomy The genera ''Comovirus'', ''Nepovirus'' and ''Fabavirus'' were classified into the family ''Comoviridae'' in 1993. This family was classified as part of the order ''Picornavirales'' when this order was created (2008), and its genera were reclassified as the subfamily ''Comovirinae'' of the family ''Secoviridae'' in 2009. accessed on line Nov. 20, 2015. The subfamily contains the following genera: * '' |
Fabavirus
''Fabavirus'' is a genus of plant viruses (plant pathogens) in the order ''Picornavirales'', in the family ''Secoviridae'', in the subfamily '' Comovirinae''. Plants serve as natural hosts. There are seven species in this genus. Taxonomy The genus contains the following species: *''Broad bean wilt virus 1'' *''Broad bean wilt virus 2'' *''Cucurbit mild mosaic virus'' *''Gentian mosaic virus'' *''Grapevine fabavirus'' *''Lamium mild mosaic virus'' *''Prunus virus F'' Structure Viruses in ''Fabavirus'' are non-enveloped, with icosahedral geometries, and T=pseudo3 symmetry. The diameter is around 28-30 nm. Genomes are linear and segmented, bipartite, around 23.4kb in length. Life cycle Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. The virus exits the host cell by tubule-gu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vicia Faba
''Vicia faba'', commonly known as the broad bean, fava bean, or faba bean, is a species of vetch, a flowering plant in the pea and bean family Fabaceae. It is widely cultivated as a crop for human consumption, and also as a cover crop. Varieties with smaller, harder seeds that are fed to horses or other animals are called field bean, tic bean or tick bean. Horse bean, ''Vicia faba'' var. ''equina'' Pers., is a variety recognized as an accepted name. This legume is very common in Southern European, Northern European, East Asian, Latin American and North African cuisines. Some people suffer from favism, a hemolytic response to the consumption of broad beans, a condition linked to a metabolism disorder known as G6PDD. Otherwise the beans, with the outer seed coat removed, can be eaten raw or cooked. In young plants, the outer seed coat can be eaten, and in very young plants, the seed pod can be eaten. Description ''Vicia faba'' is a stiffly erect, annual plant tall, wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perennial
A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also widely used to distinguish plants with little or no woody growth (secondary growth in girth) from trees and shrubs, which are also technically perennials. Perennialsespecially small flowering plantsthat grow and bloom over the spring and summer, die back every autumn and winter, and then return in the spring from their rootstock or other overwintering structure, are known as herbaceous perennials. However, depending on the rigours of local climate (temperature, moisture, organic content in the soil, microorganisms), a plant that is a perennial in its native habitat, or in a milder garden, may be treated by a gardener as an annual and planted out every year, from seed, from cuttings, or from divisions. Tomato vines, for example, live several ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulbous
In botany, a bulb is structurally a short stem with fleshy leaves or leaf basesBell, A.D. 1997. ''Plant form: an illustrated guide to flowering plant morphology''. Oxford University Press, Oxford, U.K. that function as food storage organs during dormancy. (In gardening, plants with other kinds of storage organ are also called "ornamental bulbous plants" or just "bulbs".) Description The bulb's leaf bases, also known as scales, generally do not support leaves, but contain food reserves to enable the plant to survive adverse conditions. At the center of the bulb is a vegetative growing point or an unexpanded flowering shoot. The base is formed by a reduced stem, and plant growth occurs from this basal plate. Roots emerge from the underside of the base, and new stems and leaves from the upper side. Tunicate bulbs have dry, membranous outer scales that protect the continuous lamina of fleshy scales. Species in the genera ''Allium'', ''Hippeastrum'', '' Narcissus'', and ''Tulipa'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ornamentals
Ornamental plants or garden plants are plants that are primarily grown for their beauty but also for qualities such as scent or how they shape physical space. Many flowering plants and garden varieties tend to be specially bred cultivars that improve on the original species in qualities such as color, shape, scent, and long-lasting blooms. There are many examples of fine ornamental plants that can provide height, privacy, and beauty for any garden. These ornamental perennial plants have seeds that allow them to reproduce. One of the beauties of ornamental grasses is that they are very versatile and low maintenance. Almost any types of plant have ornamental varieties: trees, shrubs, climbers, grasses, Succulent plant, succulents. aquatic plants, herbaceous perennials and annual plants. Non-botanical classifications include houseplants, bedding plants, hedges, plants for cut flowers and foliage plants. The cultivation of ornamental plants comes under floriculture and tree nursery, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Narcissus Tazetta
''Narcissus tazetta'' (paperwhite, bunch-flowered narcissus, bunch-flowered daffodil, Chinese sacred lily, cream narcissus, joss flower, polyanthus narcissus) is a perennial ornamental plant that grows from a bulb. Cultivars of ''N. tazetta'' include 'Paperwhite', 'Grand Soleil d'Or' and 'Ziva', which are popularly used for forcing indoors, as is the form of ''N. tazetta'' known as Chinese Sacred Lily. Description ''Narcissus tazetta'' is amongst the tallest of the narcissi, and can grow to a height of up to , with thin, flat leaves up to long and wide. Umbels have as many as 8 flowers, white with a yellow corona. Taxonomy Subspecies Six subspecies are accepted by the ''World Checklist of Selected Plant Families'':Search for "Narcissus tazetta", * ''N. tazetta'' subsp. ''aureus'' (Jord. & Fourr.) Baker syn. ''N. bertolonii'' – south-east France, Sardinia, north-west Italy, Algeria, Morocco * ''N. tazetta'' subsp. ''canariensis'' (Burb.) BakerBaker, John Gilbert. 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Committee On Taxonomy Of Viruses
The International Committee on Taxonomy of Viruses (ICTV) authorizes and organizes the taxonomic classification of and the nomenclatures for viruses. The ICTV has developed a universal taxonomic scheme for viruses, and thus has the means to appropriately describe, name, and classify every virus that affects living organisms. The members of the International Committee on Taxonomy of Viruses are considered expert virologists. The ICTV was formed from and is governed by the Virology Division of the International Union of Microbiological Societies. Detailed work, such as delimiting the boundaries of species within a family, typically is performed by study groups of experts in the families. History The International Committee on Nomenclature of Viruses (ICNV) was established in 1966, at the International Congress for Microbiology in Moscow, to standardize the naming of viruses. The ICVN published its first report in 1971. For viruses infecting vertebrates, the first report includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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