Closteroviridae
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Molecular characterization reveals Brazilian Tomato chlorosis virus to be closely related to a Greek isolate
Tomato chlorosis virus (ToCV, genus Crinivirus, family Closteroviridae) is a whitefly-transmitted crinivirus with a bipartite RNA genome. This virus is emerging as a serious threat to tomato crops worldwide. To date, only three complete genomic sequences of ToCV have been described from North America, Spain, and Greece isolates. In this study, we present the
Trop. plant pathol.. Publicado em: 26/07/2013
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2. Dinâmica temporal e espacial da virose causada por Tomato chlorosis virus (ToCV) em tomateiro / Temporal and spatial dynamics of the viral disease caused by Tomato chlorosis virus (ToCV) in tomato
O ToCV é um vírus pertencente à família Closteroviridae, gênero Crinivirus, que ataca plantas de tomate, entre outros hospedeiros, nas principais regiões produtoras do mundo. O vírus é transmitido exclusivamente pela mosca branca, de forma semi-persistente, sendo o biótipo B da Bemisia tabaci o principal vetor, devido à sua distribuição nas zonas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/11/2011
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3. Variabilidade genética e desenvolvimento de ferramentas sorológicas e moleculares para identificação de vírus em videira
A videira (Vitis spp.), por ser propagada vegetativamente, facilita a disseminação de patógenos, como os vírus, favorecendo o aparecimento de doenças complexas, pelo acúmulo de diferentes espécies virais numa mesma planta. Entre as doenças que afetam a videira, as viroses são as mais difíceis de controlar, pois a disseminação e o acúmulo de vír
Publicado em: 2009
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4. Detecção do Grapevine leafroll-associated virus 5 no Estado de São Paulo
O enrolamento da folha da videira ("grapevine leafroll") é uma doença atribuída a pelo menos nove vírus sorologicamente distintos, Grapevine leafroll-associated viruses 1 a 9 e designados GLRaV-1 a GLRaV-9. No Brasil, já é conhecida a existência do GLRaV-1, GLRaV-2, GLRaV-3 e GLRaV-6. Neste trabalho, foi demonstrada a ocorrência do GLRaV-5 em amostra
Summa Phytopathologica. Publicado em: 2008-12
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5. Variabilidade do gene da proteína capsidial do Grapevine leafroll-associated virus 3 no Brasil
O enrolamento da folha é uma doença economicamente importante que afeta videiras (Vitis spp.). Nove vírus sorologicamente distintos, Grapevine leafroll-associated virus-1 a -9, estão associados à doença. Este estudo descreve a seqüência do gene da proteína capsidial de quatro isolados do GLRaV-3 encontrados no Vale do Rio São Francisco, Nordeste do
Fitopatologia Brasileira. Publicado em: 2007-08
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6. Complete Genome Sequence and Analyses of the Subgenomic RNAs of Sweet Potato Chlorotic Stunt Virus Reveal Several New Features for the Genus Crinivirus
The complete nucleotide sequences of genomic RNA1 (9,407 nucleotides [nt]) and RNA2 (8,223 nt) of Sweet potato chlorotic stunt virus (SPCSV; genus Crinivirus, family Closteroviridae) were determined, revealing that SPCSV possesses the second largest identified positive-strand single-stranded RNA genome among plant viruses after Citrus tristeza virus. RNA1 co
American Society for Microbiology.
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7. Functional Specialization and Evolution of Leader Proteinases in the Family Closteroviridae
Members of the Closteroviridae and Potyviridae families of the plant positive-strand RNA viruses encode one or two papain-like leader proteinases. In addition to a C-terminal proteolytic domain, each of these proteinases possesses a nonproteolytic N-terminal domain. We compared functions of the several leader proteinases using a gene swapping approach. The l
American Society for Microbiology.
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8. An engineered closterovirus RNA replicon and analysis of heterologous terminal sequences for replication
Citrus tristeza virus (CTV) populations in citrus trees are unusually complex mixtures of viral genotypes and defective RNAs developed during the long-term vegetative propagation of the virus and by additional mixing by aphid transmission. The viral replication process allows the maintenance of minor amounts of disparate genotypes and defective RNAs in these
The National Academy of Sciences.
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9. Effects of Modification of the Transcription Initiation Site Context on Citrus Tristeza Virus Subgenomic RNA Synthesis†
Citrus tristeza virus (CTV), a member of the Closteroviridae, has a positive-sense RNA genome of about 20 kb organized into 12 open reading frames (ORFs). The last 10 ORFs are expressed through 3′-coterminal subgenomic RNAs (sgRNAs) regulated in both amounts and timing. Additionally, relatively large amounts of complementary sgRNAs are produced. We have be
American Society for Microbiology.
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10. Closterovirus bipolar virion: Evidence for initiation of assembly by minor coat protein and its restriction to the genomic RNA 5′ region
The long flexuous virions of the Closteroviridae have a unique bipolar architecture incorporating two coat proteins, with most of the helical nucleocapsid encapsidated by the major coat protein (CP) and a small portion of one end encapsidated by the minor coat protein (CPm). It is not known whether CPm encapsidates the genomic RNA and, if so, which end and w
National Academy of Sciences.
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11. Asynchronous Accumulation of Lettuce Infectious Yellows Virus RNAs 1 and 2 and Identification of an RNA 1 trans Enhancer of RNA 2 Accumulation
Time course and mutational analyses were used to examine the accumulation in protoplasts of progeny RNAs of the bipartite Crinivirus, Lettuce infectious yellow virus (LIYV; family Closteroviridae). Hybridization analyses showed that simultaneous inoculation of LIYV RNAs 1 and 2 resulted in asynchronous accumulation of progeny LIYV RNAs. LIYV RNA 1 progeny ge
American Society for Microbiology.
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12. The p23 Protein of Citrus Tristeza Virus Controls Asymmetrical RNA Accumulation †
Citrus tristeza virus (CTV), a member of the Closteroviridae, has a 19.3-kb positive-stranded RNA genome that is organized into 12 open reading frames (ORFs) with the 10 3′ genes expressed via a nested set of nine or ten 3′-coterminal subgenomic mRNAs (sgRNAs). Relatively large amounts of negative-stranded RNAs complementary to both genomic and sgRNAs ac
American Society for Microbiology.