Begomoviruses
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Is the best resistance strategy against begomoviruses yet to come? A Comprehensive Review
RESUMO A disseminação mundial de geminivírus e seu vetor tem sido atribuída à alta taxa de recombinação, mutação, presença de hospedeiros alternativos, transporte de material vegetal, atividade humana e o comércio globalizado, novas práticas agrícolas e mudanças climáticas. Portanto, as doenças virais mais graves cresceram em quase todas as c
Summa Phytopathologica. Publicado em: 2022
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2. High incidence of Tomato chlorosis virus alone and in mixed infection with begomoviruses in two tomato fields in the Federal District and Goiás state, Brazil
Tomato chlorosis virus (ToCV), a species in the Crinivirus genus, was first reported in tomatoes in Brazil (state of São Paulo) in 2008. This was followed by reports in several other Brazilian states. Tomato plants with chlorotic spots and leaf roll symptoms are frequently observed in tomato fields with high whitefly populations in Central Brazil. These pla
Trop. plant pathol.. Publicado em: 2014-12
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3. Genetic structure of a Brazilian population of the begomovirus Tomato severe rugose virus (ToSRV)
Begomoviruses are whitefly-transmitted single-stranded DNA viruses of great economic importance in the tropics and subtropics. Several begomovirus species have been reported in tomatoes in Brazil, but only a few predominate in the field, for unknown reasons. In this study begomovirus-infected tomato samples were collected in Viçosa, State of Minas Gerais, i
Trop. plant pathol.. Publicado em: 2012-10
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4. Determinantes virais envolvidos na adaptabilidade diferencial de dois begomovírus em tomateiro e Nicotiana benthamiana / Viral determinants involves in the differential adaptation of two begomovirus in tomato and Nicotiana benthamiana
Begomoviruses (family Geminiviridae) have a genome composed of a one or two components of circular, single-stranded DNA and infect dicotyledoneous plants. Symptoms induced by the begomovirus Tomato yellow spot virus (ToYSV) in tomato and Nicotiana benthamiana are more severe and appear earlier compared to those induced by Tomato rugose mosaic virus (ToRMV).
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/12/2011
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5. New species emergence via recombination among isolates of the Brazilian tomato infecting Begomovirus complex.
Partial nucleotide sequences of five tomato infecting Begomovirus isolates were determined from DNA-A fragments, corresponding to the 5' region of the replication associated protein gene, the intergenic region and the 5' region of the coat protein gene. Isolate DFM shared 95% identity with Tomato mottle leaf curl virus (TMoLCV), isolates 34, PA-05, and Ta4 w
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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6. Characterization of Tomato yellow spot virus, a novel tomato-infecting begomovirus in Brazil
The objective of this work was the biological and molecular characterization of a begomovirus detected in São Joaquim de Bicas, Minas Gerais, Brazil, named TGV-[Bi2], by determining its host range, complete nucleotide sequence and phylogenetic relationships with other begomoviruses. Biological characterization consisted of a host range study using either sa
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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7. Biological and molecular characterization of begomoviruses in soybean (Glycine max) and Euphorbia heterophylla, and RNA interference-mediated virus resistance in transgenic soybean plants / Caracterização molecular e biológica de begomovírus de soja (Glycine max) e leiteiro (Euphorbia heterophylla) e resistência a vírus mediada por RNA interferente em plantas transgênicas de soja
Molecular characterization of begomoviruses is of fundamental importance to identify the mechanisms of genetic variability of these important plant pathogens. Genome analysis allows for an understanding of mutation and recombination mechanisms which lead to evolution of new viral species. In Brazil, only a few reports of begomovirus infection of soybean have
Publicado em: 2009
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8. Caracterização de um novo begomovírus, Euphorbia yellow mosaic virus, no Brasil / Characterization of Brazilian begomovirus Euphorbia yellow mosaic virus
The amendoim-bravo (Euphorbia heterophylla; also known as painted euphorbia) is an important weed in several countries, interferes in the production of cultivated plants, and has a great potential as a reservoir of plant viruses. The objective of this study was to study the diversity of begomoviruses that infect amendoim-bravo plants, and characterize molecu
Publicado em: 2009
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9. Construção de um vetor viral, baseado no DNA-A do Tomato rugose mosaic virus (ToRMV), para a indução de silenciamento gênico em plantas hospedeiras / Construction of a viral vector based on DNA-A of Tomato rugose mosaic virus (ToRMV) for induction of gene silencing in host plants
Os begomovírus pertencem à família Geminiviridae, que inclui vírus com genoma composto por uma ou duas moléculas de DNA circular de fita simples, encapsidado em partículas icosaédricas geminadas. Os begomovírus são transmitidos pela mosca branca Bemisia tabaci e causam doenças de importância econômica em diversas culturas, principalmente em regi�
Publicado em: 2009
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10. Estudo dos mecanismos envolvidos na adaptabilidade diferencial de dois begomovírus em tomateiro e Nicotiana benthamiana / Study of the mechanisms involved in the diferential adaptability of two begomoviruses to tomato and Nicotiana benthamiana
Begomoviruses belong to the family Geminiviridae, which includes viruses with a circular, single-stranded DNA genome encapsidated in twinned icosahedral particles. Begomoviruses are transmitted by the whitefly Bemisia tabaci, and cause serious diseases in several economically important crops, mostly in tropical and subtropical regions. In Brazil, a viral com
Publicado em: 2008
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11. Caracterização de um begomovírus obtido de maracujazeiro (Passiflora edulis f. flavicarpa) e produção de clones infecciosos / Characterization of a begomovirus obtained from yellow passionfruit (Passiflora edulis f. flavicarpa) and production of infectious clones
Begomoviruses (family Geminiviridae) possess a circular, single-stranded DNA genome encapsidate in twinned icosahedral particles. They are vectored by the whitefly Bemisia tabaci and cause economically important diseases in several crops, mainly in tropical and subtropical regions. In Brazil, begomoviruses are major pathogens in common bean and tomato crops,
Publicado em: 2008
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12. Caracterização de dois begomovírus (Tomato severe rugose virus e Tomato yellow vein streak virus) que infectam tomateiro e obtenção de clones infecciosos / Characterization of two begomoviruses (Tomato severe rugose virus and Tomato yellow vein streak virus) that infect tomato and production of infectious clones
The genus Begomovirus (family Geminiviridae) includes viruses with a genome comprised of one or two molecules of circular, single-stranded DNA, transmitted to dicot species by the whitefly Bemisia tabaci. In Brazil, after the introduction of the B biotype of B. tabaci in the early 1990s, the incidence of begomoviruses in tomato has become frequent, with seve
Publicado em: 2008