| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
26/01/2006 |
|
Data da última atualização: |
03/08/2009 |
|
Autoria: |
OLIVEIRA, L. C. de; SERUDO, R. L.; SIMÕES, M. L.; ROCHA, J. C.; ROSA, A. H.; SILVA, W. T. L. da; MARTIN NETO, L. |
|
Título: |
Influência da sazonalidade nas características estruturais de substâncias húmicas extraídas da Bacia do Médio Rio Negro-AM. |
|
Ano de publicação: |
2005 |
|
Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE QUÍMICA, 28., 2005, Poços de Caldas. Resumos... Poços de Caldas: SBQ, 2005. |
|
Idioma: |
Português |
|
Conteúdo: |
Verificou-se a influência da sazonalidade nas razões atômicas (C/H, C/N e C/O) e concentrações de spins para substâncias húmicas aquáticas (SHA) extraídas de amostras de água coletadas mensalmente na Bacia do Médio Rio Negro-AM. a análise de componentes principais (PCA) caracterizou influência da sazonalidade nas características estruturais das SHA. Os resultados mostraram que o índice pluviométrico influencia diretamente na concentração de spins as substâncias húmicas aquáticas e consequentemente no grau de humificação. |
|
Palavras-Chave: |
EPR; Grau de humificação; Substâncias húmicas aquáticas. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01323naa a2200229 a 4500
001 1029386
005 2009-08-03
008 2005 bl --- 0-- u #d
100 1 $aOLIVEIRA, L. C. de
245 $aInfluência da sazonalidade nas características estruturais de substâncias húmicas extraídas da Bacia do Médio Rio Negro-AM.
260 $c2005
520 $aVerificou-se a influência da sazonalidade nas razões atômicas (C/H, C/N e C/O) e concentrações de spins para substâncias húmicas aquáticas (SHA) extraídas de amostras de água coletadas mensalmente na Bacia do Médio Rio Negro-AM. a análise de componentes principais (PCA) caracterizou influência da sazonalidade nas características estruturais das SHA. Os resultados mostraram que o índice pluviométrico influencia diretamente na concentração de spins as substâncias húmicas aquáticas e consequentemente no grau de humificação.
653 $aEPR
653 $aGrau de humificação
653 $aSubstâncias húmicas aquáticas
700 1 $aSERUDO, R. L.
700 1 $aSIMÕES, M. L.
700 1 $aROCHA, J. C.
700 1 $aROSA, A. H.
700 1 $aSILVA, W. T. L. da
700 1 $aMARTIN NETO, L.
773 $tIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE QUÍMICA, 28., 2005, Poços de Caldas. Resumos... Poços de Caldas: SBQ, 2005.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Milho e Sorgo. |
|
Data corrente: |
03/01/2014 |
|
Data da última atualização: |
27/09/2017 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
GONÇALVES, R. M.; FIGUEIREDO, J. E. F.; PEDRO, E. S.; MEIRELLES, W. F.; LEITE JÚNIOR, R. P.; SAUER, A. V.; PACCOLA-MEIRELLES, L. D. |
|
Afiliação: |
JOSE EDSON FONTES FIGUEIREDO, CNPMS; WALTER FERNANDES MEIRELLES, CNPMS. |
|
Título: |
Etiology and Phaeosphaeria leaf spot disease of maize. |
|
Ano de publicação: |
2013 |
|
Fonte/Imprenta: |
Journal of Plant Pathology, v. 95, n. 3, p. 559-569, 2013. |
|
DOI: |
10.4454/JPP.V95I3.037 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Different fungal species and the bacterium Pantoea ananatis (Pa) have been reported as etiological agents of Phaeosphaeria leaf spot (PLS) disease. This work aimed at using molecular identification of the fungi and bacteria occurring in PLS and its etiology. Genomic DNAs from (i) pool of each of the four stages of PLS lesions; (ii) bacteria and fungi isolated from lesions of natural PLS (NPLS) and artificial injuries (AI); (iii) fungi isolated from lesions obtained from plants inoculated with Pain greenhouse (GH) were used in PCR with universal primers for bacteria and fungal rRNA genes, and species-specific primers for Pa. Bacterial amplicons were observed at all stages of lesions and fungal amplicons in stages 3 and 4. Bacterial amplicons of pooled NPLS lesions were from Pawhile fungal amplicons were from Phaeosphaeria sp. and Phoma sp. Bacteria from NPLS, GH and AI lesions were identified as Pa, Pa and Bacillus subtilis, respectively, while the fungi were Epicoccum nigrum, Leptosphaeria sacchari, Cochliobolus geniculatus, Pithomyces chartarum, Alternaria alternata, A. ricini, Gibberella intricans, G. fujikuroi, Phaeosphaeria sp., P. avenaria, Phoma sp., Phyllosticta sp., Sarocladium strictum, Glomerella graminicola, and Cochliobolus heterostrophus. Symptoms of PLS decreased by 90% with the use of oxytetracycline in foliar treatment of maize plants in the field, and its addition to culture medium completely inhibited the growth of Pa. The results strongly show that Pa is the causal agent of PLS disease and different species of opportunistic fungi appear late in the necrotic stages of lesions caused by Pa. MenosDifferent fungal species and the bacterium Pantoea ananatis (Pa) have been reported as etiological agents of Phaeosphaeria leaf spot (PLS) disease. This work aimed at using molecular identification of the fungi and bacteria occurring in PLS and its etiology. Genomic DNAs from (i) pool of each of the four stages of PLS lesions; (ii) bacteria and fungi isolated from lesions of natural PLS (NPLS) and artificial injuries (AI); (iii) fungi isolated from lesions obtained from plants inoculated with Pain greenhouse (GH) were used in PCR with universal primers for bacteria and fungal rRNA genes, and species-specific primers for Pa. Bacterial amplicons were observed at all stages of lesions and fungal amplicons in stages 3 and 4. Bacterial amplicons of pooled NPLS lesions were from Pawhile fungal amplicons were from Phaeosphaeria sp. and Phoma sp. Bacteria from NPLS, GH and AI lesions were identified as Pa, Pa and Bacillus subtilis, respectively, while the fungi were Epicoccum nigrum, Leptosphaeria sacchari, Cochliobolus geniculatus, Pithomyces chartarum, Alternaria alternata, A. ricini, Gibberella intricans, G. fujikuroi, Phaeosphaeria sp., P. avenaria, Phoma sp., Phyllosticta sp., Sarocladium strictum, Glomerella graminicola, and Cochliobolus heterostrophus. Symptoms of PLS decreased by 90% with the use of oxytetracycline in foliar treatment of maize plants in the field, and its addition to culture medium completely inhibited the growth of Pa. The results strongly show that Pa is t... Mostrar Tudo |
|
Palavras-Chave: |
Plant diseases. |
|
Thesagro: |
Doença de planta; Milho; Zea mays. |
|
Thesaurus NAL: |
Foliar diseases; Pantoea ananatis; Polymerase chain reaction. |
|
Categoria do assunto: |
H Saúde e Patologia |
|
Marc: |
LEADER 02465naa a2200289 a 4500
001 1974841
005 2017-09-27
008 2013 bl uuuu u00u1 u #d
024 7 $a10.4454/JPP.V95I3.037$2DOI
100 1 $aGONÇALVES, R. M.
245 $aEtiology and Phaeosphaeria leaf spot disease of maize.$h[electronic resource]
260 $c2013
520 $aDifferent fungal species and the bacterium Pantoea ananatis (Pa) have been reported as etiological agents of Phaeosphaeria leaf spot (PLS) disease. This work aimed at using molecular identification of the fungi and bacteria occurring in PLS and its etiology. Genomic DNAs from (i) pool of each of the four stages of PLS lesions; (ii) bacteria and fungi isolated from lesions of natural PLS (NPLS) and artificial injuries (AI); (iii) fungi isolated from lesions obtained from plants inoculated with Pain greenhouse (GH) were used in PCR with universal primers for bacteria and fungal rRNA genes, and species-specific primers for Pa. Bacterial amplicons were observed at all stages of lesions and fungal amplicons in stages 3 and 4. Bacterial amplicons of pooled NPLS lesions were from Pawhile fungal amplicons were from Phaeosphaeria sp. and Phoma sp. Bacteria from NPLS, GH and AI lesions were identified as Pa, Pa and Bacillus subtilis, respectively, while the fungi were Epicoccum nigrum, Leptosphaeria sacchari, Cochliobolus geniculatus, Pithomyces chartarum, Alternaria alternata, A. ricini, Gibberella intricans, G. fujikuroi, Phaeosphaeria sp., P. avenaria, Phoma sp., Phyllosticta sp., Sarocladium strictum, Glomerella graminicola, and Cochliobolus heterostrophus. Symptoms of PLS decreased by 90% with the use of oxytetracycline in foliar treatment of maize plants in the field, and its addition to culture medium completely inhibited the growth of Pa. The results strongly show that Pa is the causal agent of PLS disease and different species of opportunistic fungi appear late in the necrotic stages of lesions caused by Pa.
650 $aFoliar diseases
650 $aPantoea ananatis
650 $aPolymerase chain reaction
650 $aDoença de planta
650 $aMilho
650 $aZea mays
653 $aPlant diseases
700 1 $aFIGUEIREDO, J. E. F.
700 1 $aPEDRO, E. S.
700 1 $aMEIRELLES, W. F.
700 1 $aLEITE JÚNIOR, R. P.
700 1 $aSAUER, A. V.
700 1 $aPACCOLA-MEIRELLES, L. D.
773 $tJournal of Plant Pathology$gv. 95, n. 3, p. 559-569, 2013.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
