Base de dados : MEDLINE
Pesquisa : B04.715.635 [Categoria DeCS]
Referências encontradas : 230 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 23 ir para página                         

  1 / 230 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29224129
[Au] Autor:Gibbs AJ; Gibbs MJ
[Ad] Endereço:Emeritus Faculty, Australian National University, Canberra, ACT, 2601, Australia. adrian_j_gibbs@hotmail.com.
[Ti] Título:Rymovirus: a cautionary tale.
[So] Source:Arch Virol;163(3):815-817, 2018 Mar.
[Is] ISSN:1432-8798
[Cp] País de publicação:Austria
[La] Idioma:eng
[Ab] Resumo:A recent proposal that the genus Rymovirus be assimilated into the genus Potyvirus is examined, discussed, and rejected. It illustrates the danger of using 'sequence identity' as a proxy for phylogenetic relatedness to distinguish closely related but distinct groups of viruses.
[Mh] Termos MeSH primário: Genoma Viral
Filogenia
Potyviridae/classificação
Potyvirus/classificação
RNA Viral/genética
[Mh] Termos MeSH secundário: Sequência de Bases
Evolução Biológica
Biologia Computacional/métodos
Potyviridae/genética
Potyvirus/genética
Análise de Sequência de RNA
Homologia de Sequência do Ácido Nucleico
Terminologia como Assunto
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Viral)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171211
[St] Status:MEDLINE
[do] DOI:10.1007/s00705-017-3676-7


  2 / 230 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29182661
[Au] Autor:Rolland M; Villemot J; Marais A; Theil S; Faure C; Cadot V; Valade R; Vitry C; Rabenstein F; Candresse T
[Ad] Endereço:Groupe d'Etude et de contrôle des Variétés Et des Semences, Beaucouzé, France.
[Ti] Título:Classical and next generation sequencing approaches unravel Bymovirus diversity in barley crops in France.
[So] Source:PLoS One;12(11):e0188495, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Despite the generalized use of cultivars carrying the rym4 resistance gene, the impact of viral mosaic diseases on winter barleys increased in recent years in France. This change could reflect i) an increased prevalence of the rym4 resistance-breaking pathotype of Barley yellow mosaic virus Y (BaYMV-2), ii) the emergence of rym4 resistance-breaking pathotypes of Barley mild mosaic virus (BaMMV) or iii) the emergence of other viruses. A study was undertaken to determine the distribution and diversity of viruses causing yellow mosaic disease. A collection of 241 symptomatic leaf samples from susceptible, rym4 and rym5 varieties was gathered from 117 sites. The viruses present in all samples were identified by specific RT-PCR assays and, for selected samples, by double-stranded RNA next-generation sequencing (NGS). The results show that BaYMV-2 is responsible for the symptoms observed in varieties carrying the resistance gene rym4. In susceptible varieties, both BaYMV-1 and BaYMV-2 were detected, together with BaMMV. Phylogenetic analyses indicate that the rym4 resistance-breaking ability independently evolved in multiple genetic backgrounds. Parallel analyses revealed a similar scenario of multiple independent emergence events in BaMMV for rym5 resistance-breaking, likely involving multiple amino acid positions in the viral-linked genome protein. NGS analyses and classical techniques provided highly convergent results, highlighting and validating the power of NGS approaches for diagnostics and viral population characterization.
[Mh] Termos MeSH primário: Sequenciamento de Nucleotídeos em Larga Escala
Hordeum/virologia
Potyviridae/genética
[Mh] Termos MeSH secundário: França
Variação Genética
Filogenia
Potyviridae/classificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171226
[Lr] Data última revisão:
171226
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171129
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0188495


  3 / 230 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28854650
[Au] Autor:Shrestha D; McAuslane HJ; Adkins ST; Smith HA; Dufault N; Colee J; Webb SE
[Ad] Endereço:Department of Entomology and Nematology, University of Florida, 1881 Natural Area Dr., Steinmetz Hall, Gainesville, FL 32611.
[Ti] Título:Host-Mediated Effects of Semipersistently Transmitted Squash Vein Yellowing Virus on Sweetpotato Whitefly (Hemiptera: Aleyrodidae) Behavior and Fitness.
[So] Source:J Econ Entomol;110(4):1433-1441, 2017 Aug 01.
[Is] ISSN:1938-291X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Plant viruses may indirectly affect insect vector behavior and fitness via a shared host plant. Here, we evaluated the host-mediated effects of Squash vein yellowing virus (SqVYV) on the behavior and fitness of its whitefly vector, Bemisia tabaci (Gennadius) Middle East-Asia Minor 1, formerly biotype B. Alighting, settling, and oviposition behavioral assays were conducted on infected and mock-inoculated squash (Cucurbita pepo L.) and watermelon [Citrullus lanatus (Thunb) Matsum and Nakai] plants. Developmental time of immature stages, adult longevity, and fecundity were measured on infected and mock-inoculated squash plants. For adult longevity and fecundity, whiteflies were reared on infected and mock-inoculated squash plants to determine the effects of nymphal rearing host on the adult stage. More whiteflies alighted and remained settled on infected squash than on mock-inoculated squash 0.25, 1, 8, and 24 h after release. No such initial preference was observed on watermelon plants, but by 8 h after release, more whiteflies were found on mock-inoculated watermelon plants than on infected plants. Whiteflies laid approximately six times more eggs on mock-inoculated watermelon than on infected watermelon; however, no differences were observed on squash. Development from egg to adult emergence was 3 d shorter on infected than mock-inoculated squash plants. Females lived 25% longer and had higher fecundity on infected squash plants than on mock-inoculated plants, regardless of infection status of the rearing host. The host-mediated effects of SqVYV infection on whitefly behavior differ on two cucurbit host plants, suggesting the potential for more rapid spread of the virus within watermelon fields.
[Mh] Termos MeSH primário: Citrullus/virologia
Cucurbita/virologia
Hemípteros/fisiologia
Doenças das Plantas/virologia
Potyviridae/fisiologia
[Mh] Termos MeSH secundário: Animais
Tamanho Corporal
Fertilidade
Voo Animal
Aptidão Genética
Hemípteros/genética
Longevidade
Oviposição
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170901
[St] Status:MEDLINE
[do] DOI:10.1093/jee/tox161


  4 / 230 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28771520
[Au] Autor:Shi S; Zhang X; Mandel MA; Zhang P; Zhang Y; Ferguson M; Amuge T; Rounsley S; Liu Z; Xiong Z
[Ad] Endereço:Institute of Tropical biology and biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China.
[Ti] Título:Variations of five eIF4E genes across cassava accessions exhibiting tolerant and susceptible responses to cassava brown streak disease.
[So] Source:PLoS One;12(8):e0181998, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Cassava (Manihot esculenta) is an important tropical subsistence crop that is severely affected by cassava brown streak disease (CBSD) in East Africa. The disease is caused by Cassava brown streak virus (CBSV) and Ugandan cassava brown streak virus (UCBSV). Both have a (+)-sense single-stranded RNA genome with a 5' covalently-linked viral protein, which functionally resembles the cap structure of mRNA, binds to eukaryotic translation initiation factor 4E (eIF4E) or its analogues, and then enable the translation of viral genomic RNA in host cells. To characterize cassava eIF4Es and their potential role in CBSD tolerance and susceptibility, we cloned five eIF4E transcripts from cassava (accession TMS60444). Sequence analysis indicated that the cassava eIF4E family of proteins consisted of one eIF4E, two eIF(iso)4E, and two divergent copies of novel cap-binding proteins (nCBPs). Our data demonstrated experimentally the coding of these five genes as annotated in the published cassava genome and provided additional evidence for refined annotations. Illumina resequencing data of the five eIF4E genes were analyzed from 14 cassava lines tolerant or susceptible to CBSD. Abundant single nucleotide polymorphisms (SNP) and biallelic variations were observed in the eIF4E genes; however, most of the SNPs were located in the introns and non-coding regions of the exons. Association studies of non-synonymous SNPs revealed no significant association between any SNP of the five eIF4E genes and the tolerance or susceptibility to CBSD. However, two SNPs in two genes were weakly associated with the CBSD responses but had no direct causal-effect relationship. SNPs in an intergenic region upstream of eIF4E_me showed a surprising strong association with CBSD responses. Digital expression profile analysis showed differential expression of different eIF4E genes but no significant difference in gene expression was found between susceptible and tolerant cassava accessions despite the association of the intergenic SNPs with CBSD responses.
[Mh] Termos MeSH primário: Resistência à Doença/imunologia
Fator de Iniciação 4E em Eucariotos/genética
Variação Genética/genética
Manihot/imunologia
Doenças das Plantas/imunologia
Plantas Geneticamente Modificadas/imunologia
Potyviridae/fisiologia
[Mh] Termos MeSH secundário: Resistência à Doença/genética
Interações Hospedeiro-Patógeno
Manihot/crescimento & desenvolvimento
Manihot/virologia
Doenças das Plantas/virologia
Plantas Geneticamente Modificadas/genética
Plantas Geneticamente Modificadas/crescimento & desenvolvimento
RNA Viral/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Eukaryotic Initiation Factor-4E); 0 (RNA, Viral)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171006
[Lr] Data última revisão:
171006
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170804
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0181998


  5 / 230 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28707269
[Au] Autor:Yuan W; Du K; Fan Z; Zhou T
[Ad] Endereço:State Key Laboratory of Agrobiotechnology and Department of Plant Pathology, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing, 100193, China.
[Ti] Título:Complete genomic sequence of common reed chlorotic stripe virus, a novel member of the family Potyviridae.
[So] Source:Arch Virol;162(11):3541-3544, 2017 Nov.
[Is] ISSN:1432-8798
[Cp] País de publicação:Austria
[La] Idioma:eng
[Ab] Resumo:Common reed (Phragmites australis) plants showing chlorotic stripe symptoms on leaves were found in Gansu Province, China. Deep sequencing of small RNAs from symptomatic leaves identified a putative potyvirus, which was named common reed chlorotic stripe virus (CRCSV). The full genome sequence was determined by reverse transcription PCR, rapid amplification of cDNA ends (RACE) PCR, and sequencing. It consists of 9,426 nucleotides, excluding the poly(A) tail, and contains a large open reading frame encoding a polyprotein of 3,014 amino acids. Putative proteolytic cleavage sites were identified. Since CRCSV shared low sequence similarity (35%-37% identity) to any known members of the family Potyviridae and it clustered uniquely in phylogenetic analysis of either the polyprotein or the coat protein, CRCSV is a distinct, previously undescribed member of the family Potyviridae.
[Mh] Termos MeSH primário: Genoma Viral
Potyviridae/genética
[Mh] Termos MeSH secundário: Sequência de Bases
Filogenia
Reação em Cadeia da Polimerase/métodos
RNA Viral/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Viral)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171025
[Lr] Data última revisão:
171025
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170715
[St] Status:MEDLINE
[do] DOI:10.1007/s00705-017-3454-6


  6 / 230 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28645239
[Au] Autor:Rey C; Vanderschuren H
[Ad] Endereço:School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg 2000, South Africa; email: chrissie.rey@wits.ac.za.
[Ti] Título:Cassava Mosaic and Brown Streak Diseases: Current Perspectives and Beyond.
[So] Source:Annu Rev Virol;4(1):429-452, 2017 Sep 29.
[Is] ISSN:2327-0578
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Cassava is the fourth largest source of calories in the world but is subject to economically important yield losses due to viral diseases, including cassava brown streak disease and cassava mosaic disease. Cassava mosaic disease occurs in sub-Saharan Africa and the Asian subcontinent and is associated with nine begomovirus species, whereas cassava brown streak disease has to date been reported only in sub-Saharan Africa and is caused by two distinct ipomovirus species. We present an overview of key milestones and their significance in the understanding and characterization of these two major diseases as well as their associated viruses and whitefly vector. New biotechnologies offer a wide range of opportunities to reduce virus-associated yield losses in cassava for farmers and can additionally enable the exploitation of this valuable crop for industrial purposes. This review explores established and new technologies for genetic manipulation to achieve desired traits such as virus resistance.
[Mh] Termos MeSH primário: Begomovirus
Manihot/virologia
Doenças das Plantas/prevenção & controle
Doenças das Plantas/virologia
Potyviridae
[Mh] Termos MeSH secundário: África ao Sul do Saara
Animais
Ásia
Begomovirus/genética
Begomovirus/isolamento & purificação
Begomovirus/fisiologia
Resistência à Doença
Hemípteros/virologia
Seres Humanos
Vírus do Mosaico/genética
Vírus do Mosaico/patogenicidade
Vírus do Mosaico/fisiologia
Doenças das Plantas/economia
Potyviridae/genética
Potyviridae/isolamento & purificação
Potyviridae/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171027
[Lr] Data última revisão:
171027
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170625
[St] Status:MEDLINE
[do] DOI:10.1146/annurev-virology-101416-041913


  7 / 230 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28499009
[Au] Autor:Kenesi E; Carbonell A; Lózsa R; Vértessy B; Lakatos L
[Ad] Endereço:Department of Dermatology and Allergology, University of Szeged, Szeged H-6720, Hungary.
[Ti] Título:A viral suppressor of RNA silencing inhibits ARGONAUTE 1 function by precluding target RNA binding to pre-assembled RISC.
[So] Source:Nucleic Acids Res;45(13):7736-7750, 2017 Jul 27.
[Is] ISSN:1362-4962
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In most eukaryotes, RNA silencing is an adaptive immune system regulating key biological processes including antiviral defense. To evade this response, viruses of plants, worms and insects have evolved viral suppressors of RNA silencing proteins (VSRs). Various VSRs, such as P1 from Sweet potato mild mottle virus (SPMMV), inhibit the activity of RNA-induced silencing complexes (RISCs) including an ARGONAUTE (AGO) protein loaded with a small RNA. However, the specific mechanisms explaining this class of inhibition are unknown. Here, we show that SPMMV P1 interacts with AGO1 and AGO2 from Arabidopsis thaliana, but solely interferes with AGO1 function. Moreover, a mutational analysis of a newly identified zinc finger domain in P1 revealed that this domain could represent an effector domain as it is required for P1 suppressor activity but not for AGO1 binding. Finally, a comparative analysis of the target RNA binding capacity of AGO1 in the presence of wild-type or suppressor-defective P1 forms revealed that P1 blocks target RNA binding to AGO1. Our results describe the negative regulation of RISC, the small RNA containing molecular machine.
[Mh] Termos MeSH primário: Proteínas de Arabidopsis/antagonistas & inibidores
Arabidopsis/genética
Arabidopsis/metabolismo
Proteínas Argonauta/antagonistas & inibidores
RNA de Plantas/metabolismo
Complexo de Inativação Induzido por RNA/metabolismo
[Mh] Termos MeSH secundário: Arabidopsis/virologia
Proteínas de Arabidopsis/genética
Proteínas de Arabidopsis/metabolismo
Proteínas Argonauta/genética
Proteínas Argonauta/metabolismo
Modelos Biológicos
Mutagênese Sítio-Dirigida
Plantas Geneticamente Modificadas
Potyviridae/genética
Potyviridae/metabolismo
Potyviridae/patogenicidade
Interferência de RNA
RNA de Plantas/genética
Complexo de Inativação Induzido por RNA/genética
Tabaco/genética
Tabaco/metabolismo
Proteínas Virais/química
Proteínas Virais/genética
Proteínas Virais/metabolismo
Dedos de Zinco/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (AGO1 protein, Arabidopsis); 0 (Arabidopsis Proteins); 0 (Argonaute Proteins); 0 (P1 protein, potyvirus); 0 (RNA, Plant); 0 (RNA-Induced Silencing Complex); 0 (Viral Proteins); 0 (argonaute 2 protein, Arabidopsis)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171010
[Lr] Data última revisão:
171010
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170513
[St] Status:MEDLINE
[do] DOI:10.1093/nar/gkx379


  8 / 230 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28434099
[Au] Autor:Seo JK; Kwak HR; Kim MK; Kim JS; Choi HS
[Ad] Endereço:Department of International Agricultural Technology, Institutes of Green Bio Science and Technology, Seoul National University, Pyeongchang, 25354, Republic of Korea. jangseo@snu.ac.kr.
[Ti] Título:The complete genome sequence of a novel virus, bellflower veinal mottle virus, suggests the existence of a new genus within the family Potyviridae.
[So] Source:Arch Virol;162(8):2457-2461, 2017 Aug.
[Is] ISSN:1432-8798
[Cp] País de publicação:Austria
[La] Idioma:eng
[Ab] Resumo:A new virus was isolated from a bellflower (Campanula takesimana) plant showing veinal mottle symptoms, and its complete genome sequence was determined. The viral genome consists of a positive-sense single-stranded RNA of 8,259 ribonucleotides. Electron microscopic observation revealed that the viral genome is packaged as a filamentous particle with an average length of approximately 760 nm. BLAST searches of protein databases showed that the encoded polyprotein has a maximum amino acid sequence identity of 34.1% (with 95% coverage) to that of the isolate AD of Chinese yam necrotic mosaic virus (CYNMV; genus Macluravirus). Phylogenetic analysis and comparison of the encoded amino acid sequences with those of other viruses demonstrated that the identified virus shows minimal sequence similarity to known viruses and should therefore be considered a member of a new genus in the family Potyviridae. The name bellflower veinal mottle virus (BVMoV) is proposed for this new virus.
[Mh] Termos MeSH primário: Campanulaceae/virologia
Genoma Viral
Vírus de Plantas/genética
Vírus de Plantas/isolamento & purificação
Potyviridae/genética
Potyviridae/isolamento & purificação
[Mh] Termos MeSH secundário: Microscopia Eletrônica de Transmissão
Filogenia
Doenças das Plantas/virologia
Folhas de Planta/virologia
Vírus de Plantas/classificação
Vírus de Plantas/ultraestrutura
Potyviridae/classificação
Potyviridae/ultraestrutura
RNA Viral/genética
Análise de Sequência de RNA
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Viral)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170731
[Lr] Data última revisão:
170731
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170424
[St] Status:MEDLINE
[do] DOI:10.1007/s00705-017-3374-5


  9 / 230 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28366187
[Au] Autor:Wylie SJ; Adams M; Chalam C; Kreuze J; López-Moya JJ; Ohshima K; Praveen S; Rabenstein F; Stenger D; Wang A; Zerbini FM; Ictv Report Consortium
[Ad] Endereço:1​State Agricultural Biotechnology Centre, Murdoch University, Perth, Western Australia 6150, Australia.
[Ti] Título:ICTV Virus Taxonomy Profile: Potyviridae.
[So] Source:J Gen Virol;98(3):352-354, 2017 Mar.
[Is] ISSN:1465-2099
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The Potyviridae is the largest family of RNA plant viruses, members of which have single-stranded, positive-sense RNA genomes and flexuous filamentous particles 680-900 nm long and 11-20 nm wide. There are eight genera, distinguished by the host range, genomic features and phylogeny of the member viruses. Genomes range from 8.2 to 11.3 kb, with an average size of 9.7 kb. Most genomes are monopartite but those of members of the genus Bymovirus are bipartite. Some members cause serious disease epidemics in cultivated plants. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the taxonomy of the Potyviridae, which is available at www.ictv.global/report/potyviridae.
[Mh] Termos MeSH primário: Doenças das Plantas/virologia
Vírus de Plantas/classificação
Vírus de Plantas/genética
Potyviridae/classificação
Potyviridae/genética
[Mh] Termos MeSH secundário: Ordem dos Genes
Genoma Viral
Filogenia
Vírus de Plantas/fisiologia
Potyviridae/fisiologia
RNA Viral/genética
Replicação Viral
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Viral)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170509
[Lr] Data última revisão:
170509
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170404
[St] Status:MEDLINE
[do] DOI:10.1099/jgv.0.000740


  10 / 230 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28265774
[Au] Autor:Ward CW
[Ad] Endereço:CSIRO Manufacturing, 343 Royal Parade, Parkville, VIC, Australia. Colin.Ward@csiro.au.
[Ti] Título:Is it time to retire the genus Rymovirus from the family Potyviridae?
[So] Source:Arch Virol;162(7):2175-2179, 2017 Jul.
[Is] ISSN:1432-8798
[Cp] País de publicação:Austria
[La] Idioma:eng
[Ab] Resumo:In the most recent Report of the International Committee on Taxonomy of Viruses (9 Report, 2011) (King et al., Virus Taxonomy, Elsevier, New York, 2011) the family Potyviridae is described as comprising seven genera - Potyvirus, Ipomovirus, Macluravirus, Rymovirus, Tritimovirus, Brambyvirus and Bymovirus - despite previous suggestions questioning the validity of the taxonomic status of the genus Rymovirus. Since then the ICTV website records that an eighth genus Poacevirus has been approved for the Potyviridae family. The creation of the genus Rymovirus at the 1990 Potyvirus Taxonomy Workshop in Braunschweig, Germany was based on two things: (i) the incorrect assumption that the genomes of all mite-transmitted members of the Potyviridae would have strong sequence similarity to that of wheat streak mosaic virus, the only mite-transmitted member of this genus for which sequence data were available at that time, and (ii) that the genus should be named Rymovirus (based on a virus for which there was no sequence information) rather than a name based on wheat streak mosaic virus (e.g., "Whestremovirus") because ryegrass mosaic virus (RGMV) was the first mite-transmitted virus to be described and thus should take precedence. When sequence data for RGMV became available in 1995, these data showed that RGMV was very different from wheat streak mosaic virus (WSMV) and should not be assigned to the same genus. WSMV was subsequently re-assigned to a new genus, Tritimovirus, while the genus Rymovirus was retained. In this author's opinion, this retention is not justified, and the removal of Rymovirus as a distinct genus in the family Potyviridae is recommended. There may be merit when assigning it to the genus Potyvirus in sequestering these viruses in a rymovirus subgroup, as is done with other potyviruses, to reflect their different mode of transmission.
[Mh] Termos MeSH primário: Filogenia
Potyviridae/classificação
[Mh] Termos MeSH secundário: Alemanha
[Pt] Tipo de publicação:NEWS
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170802
[Lr] Data última revisão:
170802
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170308
[St] Status:MEDLINE
[do] DOI:10.1007/s00705-017-3301-9



página 1 de 23 ir para página                         
   


Refinar a pesquisa
  Base de dados : MEDLINE Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde