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Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
06/04/2004 |
Data da última atualização: |
27/07/2007 |
Autoria: |
ALMEIDA, A. M. R.; MARIN, S. R. R.; BINNECK, E.; PIUGA, F. F.; SARTORI, F.; COSTAMILAN, L. M.; TEIXEIRA, M. R. O.; LOPES. |
Título: |
Pathogenicity, molecular analysis, and cercosporin content of brazilian isolates of Cercospora kikuchii. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
In: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004. |
Páginas: |
p. 69-70. |
Série: |
(Embrapa Soja. Documentos, 228). |
Idioma: |
Inglês |
Notas: |
Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi. |
Conteúdo: |
The fungus Cercospora kikuchii is involved in defoliation of soybean plants, and is normally associated with Septoria glycines in late season. No genetic resistance has been described. The screening of resistant genotypes requires previous knowledge of the fungus. This work was undertaken to evaluate pathogenic and genetic diversity among isolates of Cercospora kikuchii from different areas of Brazil. Seventy-two isolates obtained from purple stained seeds showed differences in phenotypic variation. Comments from the literature associated other Cercospora spp. with purple stain, indistinguishable from those produced by C. kikuchii. Moreover, cercosporin content and rate of colony development was higly variable among isolates. A strong correlation was found between cercosporin content and virulence. Genetic differentiation among and within populations was observed based on 86 RAPD loci. RAPD analysis permitted clustering all isolates into 6 groups. No relationship was identified between isolates and geographic origin or cercosporin content. The sequences of the intergenic spacer region (ITS1-5.8S-ITS2) from 14 isolates chosen according to the previous clustering analysis, were determined by the dideoxy chain-termination method and the chromatograms basecalled by PHRED. High quality sequence fragments (PHRED score >20) showed high similarities to the GenBank accession no. AF291708 sequence, proving that all isolates used belong to the species C. kikuchii. It is clear from this work that populations of C. kikuchii are pathogenically, genotypically and geographically variable. Moreover, C. kikuchii has great phenotypic variation and cercosporin could be a good parameter for choosing a good isolate for screening resistant or tolerant cultivars. Considering that this pathogen is easily transmitted by seeds it is not surprise to find the same haplotypes in different regions. Migration could be favoured by infected seeds as demonstrated by the clustering analysis. MenosThe fungus Cercospora kikuchii is involved in defoliation of soybean plants, and is normally associated with Septoria glycines in late season. No genetic resistance has been described. The screening of resistant genotypes requires previous knowledge of the fungus. This work was undertaken to evaluate pathogenic and genetic diversity among isolates of Cercospora kikuchii from different areas of Brazil. Seventy-two isolates obtained from purple stained seeds showed differences in phenotypic variation. Comments from the literature associated other Cercospora spp. with purple stain, indistinguishable from those produced by C. kikuchii. Moreover, cercosporin content and rate of colony development was higly variable among isolates. A strong correlation was found between cercosporin content and virulence. Genetic differentiation among and within populations was observed based on 86 RAPD loci. RAPD analysis permitted clustering all isolates into 6 groups. No relationship was identified between isolates and geographic origin or cercosporin content. The sequences of the intergenic spacer region (ITS1-5.8S-ITS2) from 14 isolates chosen according to the previous clustering analysis, were determined by the dideoxy chain-termination method and the chromatograms basecalled by PHRED. High quality sequence fragments (PHRED score >20) showed high similarities to the GenBank accession no. AF291708 sequence, proving that all isolates used belong to the species C. kikuchii. It is clear from this... Mostrar Tudo |
Categoria do assunto: |
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Marc: |
LEADER 03041naa a2200241 a 4500 001 1466751 005 2007-07-27 008 2004 bl uuuu u00u1 u #d 100 1 $aALMEIDA, A. M. R. 245 $aPathogenicity, molecular analysis, and cercosporin content of brazilian isolates of Cercospora kikuchii. 260 $c2004 300 $ap. 69-70. 490 $a(Embrapa Soja. Documentos, 228). 500 $aEditado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi. 520 $aThe fungus Cercospora kikuchii is involved in defoliation of soybean plants, and is normally associated with Septoria glycines in late season. No genetic resistance has been described. The screening of resistant genotypes requires previous knowledge of the fungus. This work was undertaken to evaluate pathogenic and genetic diversity among isolates of Cercospora kikuchii from different areas of Brazil. Seventy-two isolates obtained from purple stained seeds showed differences in phenotypic variation. Comments from the literature associated other Cercospora spp. with purple stain, indistinguishable from those produced by C. kikuchii. Moreover, cercosporin content and rate of colony development was higly variable among isolates. A strong correlation was found between cercosporin content and virulence. Genetic differentiation among and within populations was observed based on 86 RAPD loci. RAPD analysis permitted clustering all isolates into 6 groups. No relationship was identified between isolates and geographic origin or cercosporin content. The sequences of the intergenic spacer region (ITS1-5.8S-ITS2) from 14 isolates chosen according to the previous clustering analysis, were determined by the dideoxy chain-termination method and the chromatograms basecalled by PHRED. High quality sequence fragments (PHRED score >20) showed high similarities to the GenBank accession no. AF291708 sequence, proving that all isolates used belong to the species C. kikuchii. It is clear from this work that populations of C. kikuchii are pathogenically, genotypically and geographically variable. Moreover, C. kikuchii has great phenotypic variation and cercosporin could be a good parameter for choosing a good isolate for screening resistant or tolerant cultivars. Considering that this pathogen is easily transmitted by seeds it is not surprise to find the same haplotypes in different regions. Migration could be favoured by infected seeds as demonstrated by the clustering analysis. 700 1 $aMARIN, S. R. R. 700 1 $aBINNECK, E. 700 1 $aPIUGA, F. F. 700 1 $aSARTORI, F. 700 1 $aCOSTAMILAN, L. M. 700 1 $aTEIXEIRA, M. R. O. 700 1 $aLOPES. 773 $tIn: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004.
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Embrapa Soja (CNPSO) |
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Registros recuperados : 218 | |
7. | | PIOVEZANI, A. R.; PEREIRA, R. M.; MARIN, S. R. R.; ABDELNOOR, R. V. Caracterização de genes análogos de resistência a doenças em soja. In: JORNADA ACADÊMICA DA EMBRAPA SOJA, 4., 2009, Londrina. Resumos... Londrina: Embrapa Soja, 2009. p. 252-255. (Embrapa Soja. Documentos, 312). Editado por Odilon Ferreira Saraiva, Paula Geron Saiz Melo.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Soja. |
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8. | | ALMEIDA, A. M. R.; SARTORI, F.; CALVO, E. S.; MARIN, S. R. R.; FUKUJI, T. S. Diferenciação morfo-bio-molecular de isolados de Cercospora kikuchii obtidos de sementes de soja, no Brasil. Fitopatologia Brasileira, v. 26, p. 328, ago. 2001. Suplemento. Resumo 224. Edição do XXXIV Congresso Brasileiro de Fitopatologia, São Pedro, SP, ago. 2001.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Soja. |
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9. | | MANDARINO, J. M. G.; MARIN, S. R. R.; FRANÇA-NETO, J. B. Desenvolvimento de metodologia para extração e caracterização de inibidores de trpsina presentes na soja, pela técnica de eletroforese em gel de poliacrilamida. Informativo ABRATES, Curitiba, v. 7, n. 1/2, p. 46, jul; /ago. 1997. Número especial, ref. 025. Edição do X Congresso Brasileiro de Sementes, 1997.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Soja. |
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10. | | RINCÃO, M. P.; MARIN, S. R. R.; MARCELINO, F. C.; ABDELNOOR, R. V. Validação de marcadores moleculares SSR para seleção assistida para doenças em soja. In: JORNADA ACADÊMICA DA EMBRAPA SOJA, 4., 2009, Londrina. Resumos... Londrina: Embrapa Soja, 2009. p. 91-96. (Embrapa Soja. Documentos, 312). Editado por Odilon Ferreira Saraiva, Paula Geron Saiz Melo.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Soja. |
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14. | | SOSA-GÓMEZ, D. R.; SILVA, J. J. da; MARIN, S. R. R. Genetic variability and gene flow among Nezara viridula (L.) (Heteroptera: Pentatomidae) populations. In: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004. p. 219. (Embrapa Soja. Documentos, 228). Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi.Biblioteca(s): Embrapa Soja. |
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17. | | MARIN, S. R. R.; TODAKA, D.; MARUYAMA, K.; YAMAGUCHI SHINOZAKI, K.; NEPOMUCENO, A. L. Identificação de regiões promotoras de genes expressos durante déficit hídrico em cultivares de soja. Journal of Basic & Applied Genetics, Bueno Aires, v. 23, Suppl. 2012. Edição dos resumos do 15 Latin American Congress of Genetics; 41 Argentine Congress of Genetics, 45 Congress of the Chilean Society of Genetics; 2 Regional SAG-Litoral Meeting, Rosario, Oct. 2012. p. 160-161.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Soja. |
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19. | | SOSA-GÓMEZ, D. R.; OLIVEIRA, L. J. SILVA, J. J. da; MARIN, S. R. R.; BINNECK, E. Caracterização molecular de espécies de Scaptocoris (Hemiptera: Cydnidae). In: REUNIÃO SUL-BRASILEIRA SOBRE PRAGAS DE SOLO, 10., 2007, Dourados. Pragas-Solo-Sul: anais e ata. Dourados: Embrapa Agropecuária Oeste, 2007. 1 CD-ROM. (Embrapa Agropecuária Oeste. Documentos, 88). Organizado por: Crébio José Ávila, Rômulo Penna Scorza Júnior.Tipo: Artigo em Anais de Congresso / Nota Técnica | Circulação/Nível: -- - -- |
Biblioteca(s): Embrapa Soja. |
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20. | | LEMOS, N. G.; STOLF, R.; MARIN, S. R. R.; POLIZEL, A. M.; BENEVENTI, M. A.; YAMANAKA, N.; NEPOMUCENO, A. L. Caracterização molecular pela técnica de PCR em tempo real de soja geneticamente modificada. In: CONGRESO DE SOJA DEL MERCOSUR, 3., 2006, Rosário. Mercosoja 2006: mesas científico-técnicas, resúmenes expandidos / comunicaciones. Rosário: Associación de la Cadena de Soja Argentina, 2006. p. 287-289.Biblioteca(s): Embrapa Soja. |
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Registros recuperados : 218 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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