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Portraits of Viruses: Tobacco Necrosis Virus and Its Satellite Virus

Published on Jan 1, 1981in Intervirology0.873
· DOI :10.1159/000149215
B. Kassanis30
Estimated H-index: 30
(The Hertz Corporation)
Abstract
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  • Citations (15)
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#1Mart Krupovic (Pasteur Institute)H-Index: 40
#2Jens H. Kuhn (NIH: National Institutes of Health)H-Index: 44
Last. Matthias G. Fischer (MPG: Max Planck Society)H-Index: 15
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Satellite viruses encode structural proteins required for the formation of infectious particles but depend on helper viruses for completing their replication cycles. Because of this unique property, satellite viruses that infect plants, arthropods, or mammals, as well as the more recently discovered satellite-like viruses that infect protists (virophages), have been grouped with other, so-called “sub-viral agents.” For the most part, satellite viruses are therefore not classified. We argue that ...
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#1Huajun ZhangH-Index: 11
#2Jian-min WangH-Index: 2
Last. Zhengli ShiH-Index: 32
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Macrobrachium rosenbergii nodavirus (MrNV) and extra small virus (XSV) were puri- fied from diseased freshwater prawns M. rosenbergii and used to infect healthy post-larvae (PL) by an immersion method. Three groups of prawns were challenged with various combined doses of MrNV and XSV. Signs of white-tail disease (WTD) were observed in Groups 1 and 2, which had been challenged with combinations containing relatively high proportions of MrNV and low proportions of XSV. By contrast there was little...
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#1K.-B. G. Scholthof (A&M: Texas A&M University)H-Index: 1
#2R. W. Jones (ARS: Agricultural Research Service)H-Index: 1
Last. A. O. Jackson (UC: University of California)H-Index: 1
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Nearly 40 years ago, Kassanis and Nixon (1960) described two kinds of particles in tobacco necrosis virus (TNV) infections that differed in size, and thus seemed to be separate viruses. The smaller component was demonstrated to depend on the larger autonomous virus for its multiplication, and hence was designated a satellite virus, satellite tobacco necrosis virus (STNV). This discovery quickly stimulated research in several areas of biology and chemistry with a focus on relationships, pathology...
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#1Lada Rasochova (Iowa State University)H-Index: 3
CHAPTER I. GENERAL INTRODUCTION Dissertation Organization Introduction Research Goals CHAPTER! LITERATURE REVIEW Luteoviruses Qassification Virion properties Symptoms Cytopathological effects Tissue specificity Host range Serological relationships Luteovirus transmission Genome organization and replication RNA agents associated with luteoviruses Satellites Classification Requirements for replication of plant satellites Helper virus specificity and host range of plant virus satellites B type mRNA...
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#1C. FritschH-Index: 1
#2M. A. Mayo (SCRI: Scottish Crop Research Institute)H-Index: 38
Last. O. HemmerH-Index: 3
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Abstract Satellite RNA depend for their multiplication on the co-infection of a host cell by a helper virus which can itself multiply independently of the satellite. Four types of satellite RNA have been distinguished on the basis of the size of the RNA and what sort, if any, of protein they encode. One of them, the B-type, comprises relatively large RNA which are messenger RNA for non-structural proteins. Many of these satellites are typified by having nepoviruses as helper viruses. In general,...
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#1S. Koszelak (UCR: University of California, Riverside)H-Index: 12
#2James Allan Dodds (UCR: University of California, Riverside)H-Index: 1
Last. Alexander McPherson (UCR: University of California, Riverside)H-Index: 51
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Satellite tobacco mosaic virus (STMV), a small T = 1 icosahedral plant virus, has been crystallized in a form suitable for high-resolution X-ray diffraction analysis. The crystals, which diffract to better than 2.5 A resolution, are of space group I222 and have unit cell dimensions of a = 176 A, b = 192 A and c = 205 A. The centers of the virus particles occupy 222 symmetry points in the unit cell and one quarter of the virus particle constitutes the asymmetric unit, which is therefore comprised...
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The viruses and virus-like pathogens transmitted by zoosporic fungi are reviewed. The nine furoviruses (and possible members of the group), with labile rod-shaped particles, have nearly all been shown to be transmitted by plasmodiophoromycete vectors. As they have been reviewed extensively elsewhere, they are covered only briefly; important examples are beet necrotic yellow vein furovirus and potato mop-top furovirus. Five viruses with filamentous particles, tentatively recognized as poty viruse...
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#1T.E. Mirkov (UCR: University of California, Riverside)H-Index: 1
#2D. M. Mathews (UCR: University of California, Riverside)H-Index: 8
Last. J. A. Dodds (UCR: University of California, Riverside)H-Index: 7
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Abstract Satellite tobacco mosaic virus (STMV) is a plant virus with a 17-nm icosahedral particle encapsidating a 0.3 × 10 6 M r ssRNA genome that depends on tobamoviruses for its replication. The complete nucleotide sequence of STMV RNA deduced in the experiments described here was 1059 nucleotides in length. The efficiency of labeling viral RNA with [γ- 32 P]ATP using T4 polynucleotide kinase was not affected by treatment with tobacco acid pyrophosphatase and/or bacterial alkaline phosphatase,...
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#1H. Fraenkel-Conrat (UC: University of California)H-Index: 1
Necrovirus is a recently coined name for a very small group, presently encompassing only tobacco necrosis virus (TNV) and possibly cucumber necrosis and melon necrotic spot virus. Although TNV was identified very early in the history of plant virology (Smith and Bald, 1935; Pirie et al., 1938; Bawden and Pirie, 1945) and although it has a number of unusual features, this virus has been studied less frequently and in fewer laboratories than most of the long-known viruses. One of the particular as...
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