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Registro Completo |
Biblioteca(s): |
Embrapa Pantanal. |
Data corrente: |
16/05/2001 |
Data da última atualização: |
30/03/2015 |
Autoria: |
MACHADO, U. D. |
Afiliação: |
EMBRAPA. Departamento de Informacao e Documentacao (Brasilia, DF). |
Título: |
Sistema de informacao tecnico-cientifica da Embrapa - SITCE. |
Ano de publicação: |
1977 |
Fonte/Imprenta: |
Brasilia: EMBRAPA-DID, 1977. |
Páginas: |
14p. |
Idioma: |
Português |
Notas: |
Apresentado no 9o Congresso Brasileiro e 5a Jornada Sul Rio-Grandense de Biblioteconomia e Documentacao, 1977, Porto Alegre, RS. |
Conteúdo: |
A criacao do Sistema; Objetivos; Infra-estrutura do SITCE; Unidade Central de Coordenacao; Tres unidades regionais; Unidades especializadas; Unidades terciarias; Unidades internacionais; Unidades autonomas; Departamento de Informacao e Documentacao; Atividades SITCE. |
Palavras-Chave: |
Embrapa; Informacao; Sistema; System. |
Thesaurus Nal: |
information. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00850nam a2200193 a 4500 001 1806463 005 2015-03-30 008 1977 bl uuuu u0uu1 u #d 100 1 $aMACHADO, U. D. 245 $aSistema de informacao tecnico-cientifica da Embrapa - SITCE. 260 $aBrasilia: EMBRAPA-DID$c1977 300 $a14p. 500 $aApresentado no 9o Congresso Brasileiro e 5a Jornada Sul Rio-Grandense de Biblioteconomia e Documentacao, 1977, Porto Alegre, RS. 520 $aA criacao do Sistema; Objetivos; Infra-estrutura do SITCE; Unidade Central de Coordenacao; Tres unidades regionais; Unidades especializadas; Unidades terciarias; Unidades internacionais; Unidades autonomas; Departamento de Informacao e Documentacao; Atividades SITCE. 650 $ainformation 653 $aEmbrapa 653 $aInformacao 653 $aSistema 653 $aSystem
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Embrapa Pantanal (CPAP) |
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
02/02/2017 |
Data da última atualização: |
18/08/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
TAKETANI, R. G.; LANÇONI, M. D.; KAVAMURA, V. N.; DURRER, A.; ANDREOTE, F. D.; MELO, I. S. de. |
Afiliação: |
RODRIGO GOUVEA TAKETANI; MILENA DUARTE LANÇONI; VANESSA NESSNER KAVAMURA; ADEMIR DURRER, ESALQ-USP; FERNANDO DINI ANDREOTE, ESALQ-USP; ITAMAR SOARES DE MELO, CNPMA. |
Título: |
Dry season constrains bacterial phylogenetic diversity in a semi-arid rhizosphere system. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Microbial Ecology, v. 73, n. 1, p. 153-161, 2017. |
DOI: |
http://dx.doi.org/10.1007/s00248-016-0835-4 |
Idioma: |
Inglês |
Conteúdo: |
Abstract The rhizosphere is viewed as a deterministic environment led by the interaction between plants and microorganisms. In the case of semi-arid plants, this interaction is strengthened by the harshness of the environment. We tested the hypothesis that dry season represents a constraint on the bacterial diversity of the rhizosphere from semi-arid plants. To accomplish this, we sampled two leguminous species at five locations during the dry and rainy seasons in the Caatinga biome and characterised bacterial community structures using qPCR and 16S rRNA sequencing. We found that the main differences between seasons were due to reduced phylogenetic diversity caused by dryness.Variation partitioning indicated that environmental characteristics significant impacts in β-diversity. Additionally, distance decay relationship and taxa area relationship indicate a higher spatial turnover at the rainy season. During the dry season, decreased bacterial abundance is likely due to the selection of resistant or resilient microorganisms; with the return of the rain, the sensitive populations start to colonise the rhizosphere by a process that is strongly influenced by environmental characteristics. Thus, we propose that the reduction of PD and strong influence of environmental parameters on the assemblage of these communities make them prone to functional losses caused by climatic disturbances. |
Palavras-Chave: |
Diversidade genética; Phylogenetic diversity. |
Thesagro: |
Bactéria; Caatinga; Rizosfera; Seca. |
Thesaurus NAL: |
Drought; Rhizosphere bacteria; Semiarid zones. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02281naa a2200301 a 4500 001 2062520 005 2021-08-18 008 2017 bl uuuu u00u1 u #d 024 7 $ahttp://dx.doi.org/10.1007/s00248-016-0835-4$2DOI 100 1 $aTAKETANI, R. G. 245 $aDry season constrains bacterial phylogenetic diversity in a semi-arid rhizosphere system.$h[electronic resource] 260 $c2017 520 $aAbstract The rhizosphere is viewed as a deterministic environment led by the interaction between plants and microorganisms. In the case of semi-arid plants, this interaction is strengthened by the harshness of the environment. We tested the hypothesis that dry season represents a constraint on the bacterial diversity of the rhizosphere from semi-arid plants. To accomplish this, we sampled two leguminous species at five locations during the dry and rainy seasons in the Caatinga biome and characterised bacterial community structures using qPCR and 16S rRNA sequencing. We found that the main differences between seasons were due to reduced phylogenetic diversity caused by dryness.Variation partitioning indicated that environmental characteristics significant impacts in β-diversity. Additionally, distance decay relationship and taxa area relationship indicate a higher spatial turnover at the rainy season. During the dry season, decreased bacterial abundance is likely due to the selection of resistant or resilient microorganisms; with the return of the rain, the sensitive populations start to colonise the rhizosphere by a process that is strongly influenced by environmental characteristics. Thus, we propose that the reduction of PD and strong influence of environmental parameters on the assemblage of these communities make them prone to functional losses caused by climatic disturbances. 650 $aDrought 650 $aRhizosphere bacteria 650 $aSemiarid zones 650 $aBactéria 650 $aCaatinga 650 $aRizosfera 650 $aSeca 653 $aDiversidade genética 653 $aPhylogenetic diversity 700 1 $aLANÇONI, M. D. 700 1 $aKAVAMURA, V. N. 700 1 $aDURRER, A. 700 1 $aANDREOTE, F. D. 700 1 $aMELO, I. S. de 773 $tMicrobial Ecology$gv. 73, n. 1, p. 153-161, 2017.
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