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| Registros recuperados: 12 | |
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| GIMÉNEZ-PECCI, M. P.; CONCI, L. R.; TRUOL, G.; NAGATA, T.; KANEMATSU, S.; LAGUNA, I. G.; OLIVEIRA, E.; RESENDE, R. O.. |
| Viruses of the species Mal de Río Cuarto virus (genus Fijivirus, family Reoviridae) cause significant economic losses in maize in Argentina. Genetic changes in the virus genome leading to better adaptation to diverse ecological conditions were postulated that would account for the increasing MRCV variability. The genomic differences between MRCV isolates from four ecologically different areas (Río Cuarto, RC; Pergamino, P; Jesús María, JM; and Tafí del Valle, TV) were studied. RT-PCR-amplified fragments comprising four genomic segments (Seg1, Seg7, Seg9 and Seg10) of MRCV isolates were compared by RFLPs and nucleotide sequences. The segments were chosen based on the proteins they encode: RNA-dependent-RNA polymerase, proteins putatively associated with... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Virus. |
| Ano: 2007 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/490363 |
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| ARNEODO, J.; GUZMÁN, F.; OJETA, S.; RAMOS, M.L.; LAGUNA, I.; CONCI, L.; TRUOL, G.. |
| Se comparó la capacidad de ninfas de primer y tercer estadío de Delphacodes kuscheli Fennah (Hemiptera: Delphacidae) para adquirir y posteriormente transmitir el Mal de Río Cuarto virus (MRCV), bajo condiciones controladas. Ninfas I y III avirulíferas se alimentaron separadamente de plantas de trigo infectadas durante 48 horas, para luego ser colocadas en subgrupos de tres individuos sobre plantas de trigo sanas. Se realizaron transmisiones seriales utilizando períodos de inoculación de 24 horas. Ambos estadiíos lograron adquirir y transmitir el MRCV, pero se evidenció una mayor cantidad de subgrupos infectivos cuando la adquisición se efectuó como ninfas I, así como una disminución significativa en la duración del período de latencia del virus respecto de... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Delphacidae; Reoviridae; Transmisión experimental; Período de latencia; Experimental transmission; Latent period. |
| Ano: 2005 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/113868 |
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| FERREIRA, D. N. M.; MENDONÇA, R. S. de; SKORACKA, A.; SZYD?O, W.; KNIHINICKI, D.; HEIN, G. L.; PEREIRA, P. R. V. da S.; TRUOL, G.; LAU, D.. |
| The wheat curl mite (WCM), Aceria tosichella, and the plant viruses it transmits represent an invasive mite-virus complex that has affected cereal crops world- wide. The main damage caused by WCM comes from its ability to transmit and spread multiple damaging viruses to cereal crops, with Wheat streak mosaic virus (WSMV) and Wheat mosaic virus (WMoV) being the most important. Although WCM and transmitted viruses have been of concern to cereal growers and researchers for at least six decades, they continue to represent a challenge. In older affected areas, for example in North America, this mite-virus complex still has signi?cant economic impact. In Australia and South America, where this problem has only emerged in the last decade, it represents a new... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Invasive pest complex; Mite vector; Plant virus; Cereal; Eriophyidae; Poaceae; Grasses. |
| Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/951809 |
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| Registros recuperados: 12 | |
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