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The Plant Viruses - Polyhedral Virions with Tripartite Genomes (Paperback, Softcover reprint of the original 1st ed. 1985)
Loot Price: R1,491
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The Plant Viruses - Polyhedral Virions with Tripartite Genomes (Paperback, Softcover reprint of the original 1st ed. 1985)
Series: The Viruses
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It has been known for a long time that the majority of plant
viruses contain RNA and in the past decade and a half it has been
realized that many have genomes consisting of three molecules of
single-stranded RNA with positive polarity. Among these are viruses
belonging to four groups recognized by the International Committee
for Virus Taxonomy: the Bromovirus and Cucumovirus groups whose
genomes are encapsi dated in small icosahedral particles or the
Ilarvirus and alfalfa mosaic virus groups with spheroidal or
bacilliform particles. In addition to their tripartite genomes,
these viruses share a number of other properties and it has been
proposed that they should perhaps be grouped in a single virus
family for which the name Tricornaviridae has been suggested, the
tri indicating the tripartite nature of the genome, the co
emphasizing the cooperation of the three genome parts required to
initiate infection, and the rna indicating that the genome is
composed of RNA. Viruses of this "family" are less uniform in their
biological proper ties. A number of them are widespread, causing
very destructive plant diseases. Viruses such as those of cucumber
mosaic and alfalfa mosaic have very extensive host ranges and are
responsible for serious crop losses in many parts of the world.
Others such as prunus necrotic ringspot or prune dwarf viruses are
more restricted in their host ranges but never theless infect
important perennial hosts such as stone fruits and reduce
productivity considerably."
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