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Plant viruses are viruses that have the potential to 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 vascular plants ("higher plants") . Most plant viruses are rod-shaped, with protein discs forming ...
Viral envelope. A viral envelope is the outermost layer of many types of viruses. [1] It protects the genetic material in their life cycle when traveling between host cells. Not all viruses have envelopes. A viral envelope protein or E protein is a protein in the envelope, which may be acquired by the capsid from an infected host cell.
Tobacco mosaic virus ( TMV) is a positive-sense single-stranded RNA virus species in the genus Tobamovirus that infects a wide range of plants, especially tobacco and other members of the family Solanaceae. The infection causes characteristic patterns, such as "mosaic"-like mottling and discoloration on the leaves (hence the name).
A virus is a tiny infectious agent that reproduces inside the cells of living hosts. When infected, the host cell is forced to rapidly produce thousands of identical copies of the original virus. Unlike most living things, viruses do not have cells that divide; new viruses assemble in the infected host cell. But unlike simpler infectious agents ...
Tomato spotted wilt orthotospovirus. Tomato spotted wilt orthotospovirus (TSWV) is a spherical negative-sense RNA virus. Transmitted by thrips, it causes serious losses in economically important crops and it is one of the most economically devastating plant viruses in the world. [1]
Cucumber mosaic virus ( CMV) is a plant pathogenic virus [1] in the family Bromoviridae. [2] This virus has a worldwide distribution and a very wide host range, [3] having the reputation of the widest host range of any known plant virus. [4] It can be transmitted from plant to plant both mechanically by sap and by aphids in a stylet-borne fashion.
Since viruses are obligate intracellular parasitesthey must develop direct methods of transmission, between hosts, in order to survive. The mobility of animals increases the mechanisms of viral transmission that have evolved, whereas plants remain immobile, and thus plant virusesmust rely on environmental factors to be transmitted between hosts ...
Capsid. Schematic of a cytomegalovirus. Illustration of geometric model changing between two possible capsids. A similar change of size has been observed as the result of a single amino-acid mutation [1] A capsid is the protein shell of a virus, enclosing its genetic material. It consists of several oligomeric (repeating) structural subunits ...