The International Committee on Taxonomy of Viruses

Murphy, Frederick A.; Fauquet, Claude; Bishop, David H. L.; Ghabrial, Said A.; Jarvis, Audrey W.; Martelli, G. P.; Mayo, M. A.; Summers, Max D.

doi:10.1007/978-3-7091-6607-9_3

Cited by 331 publications

(224 citation statements)

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“…The Leviviridae is a family of nonenveloped, icosahedral, positive single-strand RNA bacteriophages (van Duin 1988). The family is divided into two named genera, Allolevivirus and Levivirus, and a group of unclassified phages (Murphy et al 1995). Members of Allolevivirus and Levivirus consist primarily of coliphages-species that infect Escherichia coli.…”

Section: Methodsmentioning

confidence: 99%

“…In this article, we use experimental evolution to systematically study parallel evolution by adapting three Leviviridae (Murphy et al 1995) bacteriophage species to a novel high-temperature environment. We ask three main questions: First, we ask how often parallel evolution occurs when independently evolving lines are exposed to the same environmental challenge; second, we ask how the degree of relatedness between evolving lines affects their rate of parallel evolution; and finally, we ask how often parallel genetic evolution occurs in a parallel order during adaptation by assessing the order of first detection of beneficial mutations (appearance) and order of substitution of beneficial mutations during bouts of adaptive evolution in a single species, MS2.…”

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confidence: 99%

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Parallel Genetic Evolution Within and Between Bacteriophage Species of Varying Degrees of Divergence

Bollback

Huelsenbeck

2009

Genetics

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Parallel evolution is the acquisition of identical adaptive traits in independently evolving populations. Understanding whether the genetic changes underlying adaptation to a common selective environment are parallel within and between species is interesting because it sheds light on the degree of evolutionary constraints. If parallel evolution is perfect, then the implication is that forces such as functional constraints, epistasis, and pleiotropy play an important role in shaping the outcomes of adaptive evolution. In addition, population genetic theory predicts that the probability of parallel evolution will decline with an increase in the number of adaptive solutions-if a single adaptive solution exists, then parallel evolution will be observed among highly divergent species. For this reason, it is predicted that close relatives-which likely overlap more in the details of their adaptive solutions-will show more parallel evolution. By adapting three related bacteriophage species to a novel environment we find (1) a high rate of parallel genetic evolution at orthologous nucleotide and amino acid residues within species, (2) parallel beneficial mutations do not occur in a common order in which they fix or appear in an evolving population, (3) low rates of parallel evolution and convergent evolution between species, and (4) the probability of parallel and convergent evolution between species is strongly effected by divergence.

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Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Parallel Genetic Evolution Within and Between Bacteriophage Species of Varying Degrees of Divergence

Bollback

Huelsenbeck

2009

Genetics

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“…RVFV is a member of Bunyaviridae family, Phlebovirus genus (Murphy et al 1995). Its genome consists in three negative single stranded RNA segments referred as L, M and S respectively for large, medium and small.…”

Section: The Etiological Agent Of Rvfmentioning

confidence: 99%

Molecular Epidemiology and Emergence of Rift Valley Fever

Sall

Zanotto

Vialat

et al. 1998

Mem. Inst. Oswaldo Cruz

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“…A análise destes vírus através de microscopia eletrônica, tanto de material purificado como "leaf-dip", mostra partícu-las cheias e vazias. Os principais vetores para sua disseminação, na natureza, são os coleópteros (Koenig & Lesemann 1979, Matthews 1991, Murphy et al 1995. A alteração citológica típica causada pelos vírus pertencentes a este gênero consiste na invaginação da membrana interna dos cloroplastos e vesiculações das mitocôndrias (Barradas 1983, Matthews 1991, Alexandre 1997.…”

Section: Introductionunclassified

Análise ultra-estrutural de folhas de três espécies de Solanaceae após inoculação com o vírus da necrose branca do tomateiro (VNBT - Tymovirus)

Tanaka¹,

Machado²,

Barradas³

2000

Rev. bras. Bot.

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-(Ultrastructural analysis of leaves from three species of Solanaceae after inoculation with the tomato white necrosis virus (TWNV -Tymovirus)). The leaf ultrastructure of Nicotiana glutinosa L., Lycopersicon pimpinellifolium L., and Physalis angulata L. inoculated with the tomato white necrosis virus (TWNV -Tymovirus) was analysed. Plants were kept in a greenhouse at 25°C and inoculated with the virus when tree to four leaves were totally developed. Fifteen days after inoculation, samples were collected from the median third of the 3 rd or 4 th leaf from the apex. The samples were prepared for analysis using conventional transmission electron microscope techniques. The ultrastructural analysis of the chlorenquima cells showed vesiculation and vacuolation of the chloroplasts and mitochondria, presence of multivesicular bodies, and a slight dilation of the plasmodesmata in N. glutinosa and L. pimpinellifolium. In these two species, virus-like particles were seen in the cytoplasm and vacuoles. P. angulata plants did not show subcellular alterations. Macroscopic observations, retroinoculation tests, and ultrastructural analysis showed the presence of local and systemic symptoms in N. glutinosa, latency in L. pimpinellifolium, and immunity in P. angulata. RESUMO -(Análise ultra-estrutural de folhas de três espécies de Solanaceae após inoculação com o vírus da necrose branca do tomateiro (VNBT -tymovirus)). Foi estudada a ultra-estrutura foliar das solanáceas Nicotiana glutinosa L., Lycopersicon pimpinellifolium L. e Physalis angulata L. inoculadas com o vírus da necrose branca do tomateiro (VNBT -Tymovirus).As plantas mantidas em casa-de-vegetação com temperatura constante de 25°C foram inoculadas quando apresentavam três a quatro folhas totalmente expandidas. Quinze dias após a inoculação, foram coletadas amostras do terço médio do limbo da 3ª ou da 4ª folha a partir do ápice. As amostras foram preparadas para análise em microscopia eletrônica de transmissão segundo técnicas convencionais. A análise ultra-estrutural das células do clorênquima revelou principalmente vesiculação e vacuolação dos cloroplastos e de mitocôndrias, além da ocorrência de corpos multivesiculares e ligeira dilatação dos plasmodesmos em N. glutinosa e L. pimpinellifolium. Nestas duas espécies foram observadas "virus-like-particles" no citoplasma e nos vacúolos. Plantas de P. angulata não mostraram alterações de ultra-estrutura. As observações macroscópicas, os testes de retroinoculação e as análises ultra-estruturais revelaram sintomas locais e sistêmicos em N. glutinosa, latência em L. pimpinellifolium e imunidade em P. angulata.

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The International Committee on Taxonomy of Viruses

Cited by 331 publications

References 0 publications

Parallel Genetic Evolution Within and Between Bacteriophage Species of Varying Degrees of Divergence

Parallel Genetic Evolution Within and Between Bacteriophage Species of Varying Degrees of Divergence

Molecular Epidemiology and Emergence of Rift Valley Fever

Análise ultra-estrutural de folhas de três espécies de Solanaceae após inoculação com o vírus da necrose branca do tomateiro (VNBT - Tymovirus)

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