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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
26/01/1996 |
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Data da última atualização: |
26/01/1996 |
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Autoria: |
HILF, M. E.; KARASEV, A. V.; PAPPU, H. R.; GUMPF, D. J.; NIBLETT, C. L.; GARNSEY, S. |
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Afiliação: |
USDA-ARS Horticultural Research Laboratory, 2120 Camden Road, Orlando,Florida 32803; Department of Plant Pathology, University of California, Riverside, California 92521-0122; and Plant Pathology Department. |
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Título: |
Characterization of citrus tristeza virus subgenomic RNAs in infected Tissue. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Virology v.208, p.576-582, 1995. |
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Idioma: |
Inglês |
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Conteúdo: |
Citrus tristeza virus (CTV) specific RNAs extracted from infected citrus tissue were analyzed by Northerm blot hybridization. TNAs were charcterized by size and identifield using cDNA probes specific to nine open reading frames (ORFs) identified by the analysis of sequence obtained from cDNA clones of the T36 isolate of CTV. Sequence specific cDNA probes identified the genomic RNA as well as subgenomic RNAs representing the p33, p65, p61, p27, p25, p18, p13, p20, and p23, ORFs in extracts of total or double-stranded RNA (dsRNA) isolated from infected tissue. A probe derived from the 3' terminal ORF (p23) hybridized to eachof these subgenomic RNAs, indicating that the RNAs are 3' coterminal. Thwe relative amounts of the different subgenimic RNAs varied widely. The RNAs for the p20 and p23 ORFs were the most abundant and surpassed the amount of the p25 or capside protein specific subgenomic RNA. The number and sizes pf the CTV sobgenomic RNAs were the same in total and dsRNA preparations. Propagation of T36 in seven different citrus hosts did not alter the pattem of subgenomic RNAs. |
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Palavras-Chave: |
Diseases; Doencas; Propagacao; Propagation. |
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Thesagro: |
Vírus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01704naa a2200241 a 4500
001 1634212
005 1996-01-26
008 1995 bl uuuu u00u1 u #d
100 1 $aHILF, M. E.
245 $aCharacterization of citrus tristeza virus subgenomic RNAs in infected Tissue.
260 $c1995
520 $aCitrus tristeza virus (CTV) specific RNAs extracted from infected citrus tissue were analyzed by Northerm blot hybridization. TNAs were charcterized by size and identifield using cDNA probes specific to nine open reading frames (ORFs) identified by the analysis of sequence obtained from cDNA clones of the T36 isolate of CTV. Sequence specific cDNA probes identified the genomic RNA as well as subgenomic RNAs representing the p33, p65, p61, p27, p25, p18, p13, p20, and p23, ORFs in extracts of total or double-stranded RNA (dsRNA) isolated from infected tissue. A probe derived from the 3' terminal ORF (p23) hybridized to eachof these subgenomic RNAs, indicating that the RNAs are 3' coterminal. Thwe relative amounts of the different subgenimic RNAs varied widely. The RNAs for the p20 and p23 ORFs were the most abundant and surpassed the amount of the p25 or capside protein specific subgenomic RNA. The number and sizes pf the CTV sobgenomic RNAs were the same in total and dsRNA preparations. Propagation of T36 in seven different citrus hosts did not alter the pattem of subgenomic RNAs.
650 $aVírus
653 $aDiseases
653 $aDoencas
653 $aPropagacao
653 $aPropagation
700 1 $aKARASEV, A. V.
700 1 $aPAPPU, H. R.
700 1 $aGUMPF, D. J.
700 1 $aNIBLETT, C. L.
700 1 $aGARNSEY, S.
773 $tVirology$gv.208, p.576-582, 1995.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Cerrados; Embrapa Trigo. |
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Data corrente: |
25/11/2021 |
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Data da última atualização: |
07/01/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
ASCARI, J. P.; BARRO, J. P.; SANTANA, F. M.; PADUA, J. M. V.; MACIEL, J. L. N.; LAU, D.; TORRES, G. A. M.; SBALCHEIRO, C. C.; SEIXAS, C. D. S.; GOULART, A. C. P.; SUSSEL, A. A. B.; SCHIPANSKI, C. A.; CHAGAS, D. F.; COELHO, M. A. O.; MONTECELLI, T. D. N.; AMARAL, D. R.; CUSTÓDIO, A. A. P.; MOREIRA, L. S. O.; UTIAMADA, C. M.; VENÂNCIO, W. S.; GOUSSAIN, R. C. S.; ALVES, K. S.; DEL PONTE, E. M. |
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Afiliação: |
JOÃO P. ASCARI, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-900, MG, Brazil; JHONATAN P. BARRO, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-900, MG, Brazil; FLAVIO MARTINS SANTANA, CNPT; JOSÉ M. V. PADUA, Departamento de Agricultura, Universidade Federal de Lavras, Lavras, 37200-900, MG, Brazil; JOAO LEODATO NUNES MACIEL, CNPT; DOUGLAS LAU, CNPT; GISELE ABIGAIL MONTAN TORRES, CNPT; CHEILA CRISTINA SBALCHEIRO, CNPT; CLAUDINE DINALI SANTOS SEIXAS, CNPSO; AUGUSTO CESAR PEREIRA GOULART, CPAO; ANGELO APARECIDO BARBOSA SUSSEL, CPAC; CARLOS A. SCHIPANSKI, G12 Agro Pesquisa e Consultoria Agronômica, Guarapuava, 85015-344, PR, Brazil; DÉBORA F. CHAGAS, G12 Agro Pesquisa e Consultoria Agronômica, Guarapuava, 85015-344, PR, Brazil; MAURÍCIO A. O. COELHO, Empresa de Pesquisa Agropecuária de Minas Gerais, Patos de Minas, 38700-970, MG, Brazil; TATIANE D. N. MONTECELLI, Coodetec, Cascavel, 85818-650, PR, Brazil; DANIEL R. AMARAL, Instituto Federal do Triângulo Mineiro Uberaba, 38064-790, MG, Brazil; ADRIANO A. P. CUSTÓDIO, Área de Proteção de Plantas, Instituto Agronômico do Paraná, Londrina, 86047-902, PR, Brazil; LUCAS S. O. MOREIRA, Área de Proteção de Plantas, Instituto Agronômico do Paraná, Londrina, 86047-902, PR, Brazil; CARLOS M. UTIAMADA, Tagro, Londrina, 86070-460, PR, Brazil; WILSON S. VENÂNCIO, Estação Experimental Agrícola Campos Gerais, Palmeira, 84130-000, PR, Brazil; RITA C. S. GOUSSAIN, Instituto Federal do Mato Grosso, Campo Verde, 78840-000, MT, Brazil; KAIQUE S. ALVES, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-900, MG, Brazil; EMERSON M. DEL PONTE, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-900, MG, Brazil. |
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Título: |
Sequential post-heading applications for controlling wheat blast: a nine-tear summary of fungicide performance in Brazil. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Plant Disease, PDIS-06-21-1183-RE Jul. 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
Wheat blast, caused by Pyricularia oryzae Triticum (PoT) lineage, is a major constraint to wheat production, mainly in the tropics of Brazil where severe epidemics have been more frequent. We analyzed disease and wheat yield data from uniform field trials conducted during nine years (2012 to 2020) in order to assess whether the percent control and yield response were influenced by fungicide type, region (tropical or subtropical), and year. Six treatments were selected, all evaluated in at least 19 trials. Two ungicides were applied as solo active ingredients: MANCozeb, and TEBUconazole, and four were premixes: AZOXystrobin + TEBU, TriFLoXystrobin + PROThioconazole, TFLX + TEBU, and PYRAclostrobin + EPOXiconazole. Percent control, calculated from back- ransforming estimates by a meta-analysis network model fitted to the log of the means, ranged from 43 to 58%, with all but PYRA + EPOX showing efficacy greater than 52% on average, not differing among them. The variation in both efficacy and yield response was explained by region and all but TEBU performed better in the subtropics Than in the tropics. Yield response from using three sequential sprays was around two times
greater in the subtropics (319 to 532 kg/ha) than in the tropics (149 to 241.3 kg/ha). No significant decline in fungicide efficacy or yield response was observed in nine years of study for any of the fungicides. Our results reinforce the need to improve control by adopting an integrated management approach in the tropics given the poorer performance and lower profitability, especially for the premixes, than in the subtropics. Keywords: Pyricularia oryzae, chemical control, profitability, meta-analysis MenosWheat blast, caused by Pyricularia oryzae Triticum (PoT) lineage, is a major constraint to wheat production, mainly in the tropics of Brazil where severe epidemics have been more frequent. We analyzed disease and wheat yield data from uniform field trials conducted during nine years (2012 to 2020) in order to assess whether the percent control and yield response were influenced by fungicide type, region (tropical or subtropical), and year. Six treatments were selected, all evaluated in at least 19 trials. Two ungicides were applied as solo active ingredients: MANCozeb, and TEBUconazole, and four were premixes: AZOXystrobin + TEBU, TriFLoXystrobin + PROThioconazole, TFLX + TEBU, and PYRAclostrobin + EPOXiconazole. Percent control, calculated from back- ransforming estimates by a meta-analysis network model fitted to the log of the means, ranged from 43 to 58%, with all but PYRA + EPOX showing efficacy greater than 52% on average, not differing among them. The variation in both efficacy and yield response was explained by region and all but TEBU performed better in the subtropics Than in the tropics. Yield response from using three sequential sprays was around two times
greater in the subtropics (319 to 532 kg/ha) than in the tropics (149 to 241.3 kg/ha). No significant decline in fungicide efficacy or yield response was observed in nine years of study for any of the fungicides. Our results reinforce the need to improve control by adopting an integrated management approach ... Mostrar Tudo |
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Thesagro: |
Pyricularia Oryzae. |
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Thesaurus NAL: |
Chemical control; Meta-analysis; Profitability. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/228150/1/pdis-06-21-1183-re.pdf
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Marc: |
LEADER 02949naa a2200433 a 4500
001 2138882
005 2022-01-07
008 2021 bl uuuu u00u1 u #d
100 1 $aASCARI, J. P.
245 $aSequential post-heading applications for controlling wheat blast$ba nine-tear summary of fungicide performance in Brazil.$h[electronic resource]
260 $c2021
520 $aWheat blast, caused by Pyricularia oryzae Triticum (PoT) lineage, is a major constraint to wheat production, mainly in the tropics of Brazil where severe epidemics have been more frequent. We analyzed disease and wheat yield data from uniform field trials conducted during nine years (2012 to 2020) in order to assess whether the percent control and yield response were influenced by fungicide type, region (tropical or subtropical), and year. Six treatments were selected, all evaluated in at least 19 trials. Two ungicides were applied as solo active ingredients: MANCozeb, and TEBUconazole, and four were premixes: AZOXystrobin + TEBU, TriFLoXystrobin + PROThioconazole, TFLX + TEBU, and PYRAclostrobin + EPOXiconazole. Percent control, calculated from back- ransforming estimates by a meta-analysis network model fitted to the log of the means, ranged from 43 to 58%, with all but PYRA + EPOX showing efficacy greater than 52% on average, not differing among them. The variation in both efficacy and yield response was explained by region and all but TEBU performed better in the subtropics Than in the tropics. Yield response from using three sequential sprays was around two times greater in the subtropics (319 to 532 kg/ha) than in the tropics (149 to 241.3 kg/ha). No significant decline in fungicide efficacy or yield response was observed in nine years of study for any of the fungicides. Our results reinforce the need to improve control by adopting an integrated management approach in the tropics given the poorer performance and lower profitability, especially for the premixes, than in the subtropics. Keywords: Pyricularia oryzae, chemical control, profitability, meta-analysis
650 $aChemical control
650 $aMeta-analysis
650 $aProfitability
650 $aPyricularia Oryzae
700 1 $aBARRO, J. P.
700 1 $aSANTANA, F. M.
700 1 $aPADUA, J. M. V.
700 1 $aMACIEL, J. L. N.
700 1 $aLAU, D.
700 1 $aTORRES, G. A. M.
700 1 $aSBALCHEIRO, C. C.
700 1 $aSEIXAS, C. D. S.
700 1 $aGOULART, A. C. P.
700 1 $aSUSSEL, A. A. B.
700 1 $aSCHIPANSKI, C. A.
700 1 $aCHAGAS, D. F.
700 1 $aCOELHO, M. A. O.
700 1 $aMONTECELLI, T. D. N.
700 1 $aAMARAL, D. R.
700 1 $aCUSTÓDIO, A. A. P.
700 1 $aMOREIRA, L. S. O.
700 1 $aUTIAMADA, C. M.
700 1 $aVENÂNCIO, W. S.
700 1 $aGOUSSAIN, R. C. S.
700 1 $aALVES, K. S.
700 1 $aDEL PONTE, E. M.
773 $tPlant Disease, PDIS-06-21-1183-RE Jul. 2021.
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Embrapa Agropecuária Oeste (CPAO) |
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