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| 8. |  | NAVROSKI, D.; COLOZZI FILHO, A.; MOREIRA, A.; GRANGE, L. Atividade da enzima fosfatase ácida em diferentes manejos de solo na região oeste do Paraná. In: REUNIÃO BRASILEIRA DE MANEJO E CONSERVAÇÃO DO SOLO E DA ÁGUA, 20., 2016, Foz do Iguaçu. O solo sob ameaça: conexões necessárias ao manejo e conservação do solo e água: anais. Curitiba: SBCS-NEPAR; Londrina: IAPAR, 2016. p. 738-740. 1 Livro digital. Editado por Arnaldo Colozzi Filho, João Henrique Caviglione, Graziela Moraes de Cesare Barbosa, Luciano Grillo Gil, Tiago Santos Telles.| Biblioteca(s): Embrapa Soja. |
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| 14. | | MOSTASSO, F. L.; COLOZZI-FILHO, A.; HUNGRIA, M. Efeito de exsudatos de soja, feijão, milho e trigo sobre a germinação e crescimento micelial de Gigaspora gigantea "in vitro". In: SIMPÓSIO BRASILEIRO SOBRE MICROBIOLOGIA DO SOLO, 3.; REUNIÃO DE LABORATÓRIOS PARA RECOMENDAÇÃO DE ESTIRPES DE RHIZOBIUM E BRADYRHIZOBIUM, 6., 1994, Londrina. Resumos... Londrina: IAPAR, 1994. Não paginado. Trabalho n. 106.| Biblioteca(s): Embrapa Soja. |
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| 18. | | ANDRADE, D. S.; COLOZZI-FILHO, A.; HUNGRIA, M.; MATOS, A. M.; MACHINESKI, O. População de rizóbios e nodulação do feijoeiro em cultivo agro-ecológico. In: WORLD CONGRESS ON CONSERVATION AGRICULTURE = CONGRESSO MUNDIAL SOBRE AGRICULTURA CONSERVACIONISTA, 2., 2003, Foz do Iguaçu. Producing in harmony with nature: [proceedings ...] = Produzindo em harmonia com a natureza: [anais ...]. Ponta Grossa: Federação Brasileira de Plantio Direto na Palha, 2003. v. 2 p. 448-451. II World Congress on Conservation Agriculture, Iguassu Falls, 2003. Extended summary / posters.| Biblioteca(s): Embrapa Soja. |
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| 19. | | ANDRADE, D. S.; COLOZZI FILHO, A.; HUNGRIA, M.; OLIVEIRA, E. de; BALOTA, E. L. Potential for increasing soil biodiversity in agroecosystems. In: INTERNATIONAL TECHNICAL WORKSHOP ON BIOLOGICAL MANAGEMENT OF SOIL ECOSYSTEMS FOR SUSTAINABLE AGRICULTURE, 2002, Londrina. Program, abstracts and related documents. Londrina: Embrapa Soybean: FAO, 2002. p. 108. (Embrapa Soja. Documentos, 182). Organizado por George G. Brown, Mariangela Hungria, Lenita Jacob Oliveira, Sally Bunning, Adriana Montañez.| Biblioteca(s): Embrapa Soja. |
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Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
20/10/2005 |
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Data da última atualização: |
20/10/2005 |
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Autoria: |
ANDRADE, D. S.; MATOS, M. A.; COLOZZI-FILHO, A.; HUNGRIA, M. |
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Título: |
Diversity of rhizobial isolates from commom bean seeds in Brazil. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ON MICROBIAL ECOLOGY, 10., 2004, Cancun. Microbial planet: sub-surface to space. Cancun: Internacional Society for Microbial, 2004. p.1131. |
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Idioma: |
Inglês |
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Conteúdo: |
Previous studies on the biodiversity of rhizobia associated with common bean (Phaseolus vulgaris L.) have emphasized the promiscuous nature of the host plant. Seeds of common bean can carry many viable rhizobial cells and studies performed in Mexico identified the presence of Rhizobium etli on the seeds. In this study, 103 fast-grower isolates of Phaseolus-rhizobia were obtained from 32 seed samples of several cultivars collected in the States of Parana, São Paulo and Minas Gerais, in Brazil. Thirty-eight % of those samples carried viable cells of rhizobia on the seeds that resulted in nodulation ranging from 1.5 to 45 nodules per plant. Nodule size ranged from 2 to 5 mm of diameter and nodules showed internal color white or pink. One-hundred and three isolates were morphologically characterized aiming their grouping according to the phenotypic traits and differences among them were verified on several properties. Polymerase Chain Reaction (PCR)-mediated restriction fragment length polymorphism (RFLP) analysis of the 16S-23S rRNA internally transcribed spacer (ITS) region and of the 16S rRNA gene indicated that the rhizobial subpopulation isolated from seeds of cultivar Carioca contained the largest number of ITS groups. Based on the number of ITS, the diversity and richness, estimated with the Shannon and Margalef indices, ranged from 0.69 to 2.89 and 0.45 to 6.04, respectively. The presence of infective rhizobia on common bean seeds may have contributed to the high level of rhizobial diversity observed in Brazilian soils. MenosPrevious studies on the biodiversity of rhizobia associated with common bean (Phaseolus vulgaris L.) have emphasized the promiscuous nature of the host plant. Seeds of common bean can carry many viable rhizobial cells and studies performed in Mexico identified the presence of Rhizobium etli on the seeds. In this study, 103 fast-grower isolates of Phaseolus-rhizobia were obtained from 32 seed samples of several cultivars collected in the States of Parana, São Paulo and Minas Gerais, in Brazil. Thirty-eight % of those samples carried viable cells of rhizobia on the seeds that resulted in nodulation ranging from 1.5 to 45 nodules per plant. Nodule size ranged from 2 to 5 mm of diameter and nodules showed internal color white or pink. One-hundred and three isolates were morphologically characterized aiming their grouping according to the phenotypic traits and differences among them were verified on several properties. Polymerase Chain Reaction (PCR)-mediated restriction fragment length polymorphism (RFLP) analysis of the 16S-23S rRNA internally transcribed spacer (ITS) region and of the 16S rRNA gene indicated that the rhizobial subpopulation isolated from seeds of cultivar Carioca contained the largest number of ITS groups. Based on the number of ITS, the diversity and richness, estimated with the Shannon and Margalef indices, ranged from 0.69 to 2.89 and 0.45 to 6.04, respectively. The presence of infective rhizobia on common bean seeds may have contributed to the high level o... Mostrar Tudo |
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Thesagro: |
Bacteriologia do Solo; Feijão; Rhizobium; Semente. |
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Categoria do assunto: |
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Marc: |
LEADER 02210naa a2200205 a 4500
001 1460863
005 2005-10-20
008 2004 bl --- 0-- u #d
100 1 $aANDRADE, D. S.
245 $aDiversity of rhizobial isolates from commom bean seeds in Brazil.
260 $c2004
520 $aPrevious studies on the biodiversity of rhizobia associated with common bean (Phaseolus vulgaris L.) have emphasized the promiscuous nature of the host plant. Seeds of common bean can carry many viable rhizobial cells and studies performed in Mexico identified the presence of Rhizobium etli on the seeds. In this study, 103 fast-grower isolates of Phaseolus-rhizobia were obtained from 32 seed samples of several cultivars collected in the States of Parana, São Paulo and Minas Gerais, in Brazil. Thirty-eight % of those samples carried viable cells of rhizobia on the seeds that resulted in nodulation ranging from 1.5 to 45 nodules per plant. Nodule size ranged from 2 to 5 mm of diameter and nodules showed internal color white or pink. One-hundred and three isolates were morphologically characterized aiming their grouping according to the phenotypic traits and differences among them were verified on several properties. Polymerase Chain Reaction (PCR)-mediated restriction fragment length polymorphism (RFLP) analysis of the 16S-23S rRNA internally transcribed spacer (ITS) region and of the 16S rRNA gene indicated that the rhizobial subpopulation isolated from seeds of cultivar Carioca contained the largest number of ITS groups. Based on the number of ITS, the diversity and richness, estimated with the Shannon and Margalef indices, ranged from 0.69 to 2.89 and 0.45 to 6.04, respectively. The presence of infective rhizobia on common bean seeds may have contributed to the high level of rhizobial diversity observed in Brazilian soils.
650 $aBacteriologia do Solo
650 $aFeijão
650 $aRhizobium
650 $aSemente
700 1 $aMATOS, M. A.
700 1 $aCOLOZZI-FILHO, A.
700 1 $aHUNGRIA, M.
773 $tIn: INTERNATIONAL SYMPOSIUM ON MICROBIAL ECOLOGY, 10., 2004, Cancun. Microbial planet: sub-surface to space. Cancun: Internacional Society for Microbial, 2004. p.1131.
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