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Registro Completo |
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
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Data corrente: |
30/09/1998 |
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Data da última atualização: |
30/09/1998 |
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Autoria: |
ABREU, T. S.; SOARES, A. G.; JESUS, E. F. O. |
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Título: |
Efeitos de diferentes doses de radiacao gama absorvidas por tomates pos-colheita. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
In: MEETING ON NUCLEAR APPLICATION, 4., 1997, Pocos de Caldas. Proceedings... [S.l.: s.n., s.d.]. p.887-892. |
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Idioma: |
Português |
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Conteúdo: |
Tomates pos-colheita Santa Cruz foram submetidos a tratamento de irradiacao utilizando radiacao gama com doses entre zero (frutos nao irradiados) e 1000 Gy. O proposito deste trabalho e a avaliar os seguintes paramentros de qualidade pos-colheita dos frutos citados: atributos de transmitancia de luz utilizando o Sistema Hunter para analise da cor da polpa. pH, acidez titulavel total, solidos soluveis totais, firmeza maxima e estagio de maturacao. Os frutos foram armazenados a temperatur de 25oC, com umidade relativa de 93,3% Os resultados obtidos nos diferentes tratamentos indicam que 600Gy e a dose mais adequada para aumentar a vida de prateleira e retardar o amadurecimento destes tomates, sob as condicoes acima descritas. |
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Palavras-Chave: |
Pos-coheita; Postharvest; Radiation; Tomato. |
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Thesagro: |
Radiação; Tomate. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01362naa a2200217 a 4500
001 1410337
005 1998-09-30
008 1997 bl uuuu u00u1 u #d
100 1 $aABREU, T. S.
245 $aEfeitos de diferentes doses de radiacao gama absorvidas por tomates pos-colheita.
260 $c1997
520 $aTomates pos-colheita Santa Cruz foram submetidos a tratamento de irradiacao utilizando radiacao gama com doses entre zero (frutos nao irradiados) e 1000 Gy. O proposito deste trabalho e a avaliar os seguintes paramentros de qualidade pos-colheita dos frutos citados: atributos de transmitancia de luz utilizando o Sistema Hunter para analise da cor da polpa. pH, acidez titulavel total, solidos soluveis totais, firmeza maxima e estagio de maturacao. Os frutos foram armazenados a temperatur de 25oC, com umidade relativa de 93,3% Os resultados obtidos nos diferentes tratamentos indicam que 600Gy e a dose mais adequada para aumentar a vida de prateleira e retardar o amadurecimento destes tomates, sob as condicoes acima descritas.
650 $aRadiação
650 $aTomate
653 $aPos-coheita
653 $aPostharvest
653 $aRadiation
653 $aTomato
700 1 $aSOARES, A. G.
700 1 $aJESUS, E. F. O.
773 $tIn: MEETING ON NUCLEAR APPLICATION, 4., 1997, Pocos de Caldas. Proceedings... [S.l.: s.n., s.d.]. p.887-892.
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Registro original: |
Embrapa Agroindústria de Alimentos (CTAA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
17/06/2008 |
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Data da última atualização: |
24/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
BOMFETI, C. A.; SOUZA-PACCOLA, E. A.; MASSOLA JUNIOR, N. S.; MARRIEL, I. E.; MEIRELLES, W. F.; CASELA, C. R.; PACCOLA-MEIRELLES, L. D. |
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Afiliação: |
Cleide A. Bomfeti, UEL; Edneia A. Sopuza-Paccola, UEL; Nelson S. Massola Junior, Esalq; IVANILDO EVODIO MARRIEL, CNPMS; WALTER FERNANDES MEIRELLES, CNPMS; Carlos Roberto Casela, CNPMS; Luzia D. Paccola-Meirelles, UEL. |
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Título: |
Localization of Pantoea ananatis inside lesions of maize white spot disease using transmission electron microscopy and molecular techniques. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Tropical Plant Pathology, Brasília, v. 33, n. 1, p. 63-66, Jan./Feb. 2008. |
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DOI: |
10.1590/S1982-56762008000100010 |
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Idioma: |
Inglês |
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Conteúdo: |
The etiological agent of maize white spot (MWS) disease has been a subject of controversy and discussion. Initially the disease was described as Phaeosphaeria leaf spot caused by Phaeosphaeria maydis. Other authors have suggested the existence of different fungal species causing similar symptoms. Recently, a bacterium, Pantoea ananatis, was described as the causal agent of this disease. The purpose of this study was to offer additional information on the correct etiology of this disease by providing visual evidence of the presence of the bacterium in the interior of the MWS lesions by using transmission electron microscopy (TEM) and molecular techniques. The TEM allowed visualization of a large amount of bacteria in the intercellular spaces of lesions collected from both artificially and naturally infected plants. Fungal structures were not visualized in young lesions. Bacterial primers for the 16S rRNA and rpoB genes were used in PCR reactions 10 amplify DNA extracted from water-soaked (young) and necrotic lesions. The universal fungal oligonucleotide ITS4 was also included to identify the possible presence of funga! structures inside lesions. Positive PCR products from water-soaked lesions, both from naturally and artificially inoculated plants, were produced with bacterial primers, whereas no amplification was observed when ITS4 oligonucleotide was used. On the other hand, DNA amplification with ITS4 primer was observed when DNA was isolated from necrotic (old) lesions. These results reinforced previous report of P. ananatis as the primary pathogen and the hypothesis that fungal species may colonize lesions pre-established by P. ananatis. MenosThe etiological agent of maize white spot (MWS) disease has been a subject of controversy and discussion. Initially the disease was described as Phaeosphaeria leaf spot caused by Phaeosphaeria maydis. Other authors have suggested the existence of different fungal species causing similar symptoms. Recently, a bacterium, Pantoea ananatis, was described as the causal agent of this disease. The purpose of this study was to offer additional information on the correct etiology of this disease by providing visual evidence of the presence of the bacterium in the interior of the MWS lesions by using transmission electron microscopy (TEM) and molecular techniques. The TEM allowed visualization of a large amount of bacteria in the intercellular spaces of lesions collected from both artificially and naturally infected plants. Fungal structures were not visualized in young lesions. Bacterial primers for the 16S rRNA and rpoB genes were used in PCR reactions 10 amplify DNA extracted from water-soaked (young) and necrotic lesions. The universal fungal oligonucleotide ITS4 was also included to identify the possible presence of funga! structures inside lesions. Positive PCR products from water-soaked lesions, both from naturally and artificially inoculated plants, were produced with bacterial primers, whereas no amplification was observed when ITS4 oligonucleotide was used. On the other hand, DNA amplification with ITS4 primer was observed when DNA was isolated from necrotic (old) lesions. T... Mostrar Tudo |
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Palavras-Chave: |
Doença bacteriana do milho; doenças foliares do milho; Maize bacterial disease; Maize leaf disease. |
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Thesagro: |
Milho; Zea Mays. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/32277/1/Localization-pantoea.pdf
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Marc: |
LEADER 02604naa a2200277 a 4500
001 1491172
005 2018-05-24
008 2008 bl uuuu u00u1 u #d
024 7 $a10.1590/S1982-56762008000100010$2DOI
100 1 $aBOMFETI, C. A.
245 $aLocalization of Pantoea ananatis inside lesions of maize white spot disease using transmission electron microscopy and molecular techniques.$h[electronic resource]
260 $c2008
520 $aThe etiological agent of maize white spot (MWS) disease has been a subject of controversy and discussion. Initially the disease was described as Phaeosphaeria leaf spot caused by Phaeosphaeria maydis. Other authors have suggested the existence of different fungal species causing similar symptoms. Recently, a bacterium, Pantoea ananatis, was described as the causal agent of this disease. The purpose of this study was to offer additional information on the correct etiology of this disease by providing visual evidence of the presence of the bacterium in the interior of the MWS lesions by using transmission electron microscopy (TEM) and molecular techniques. The TEM allowed visualization of a large amount of bacteria in the intercellular spaces of lesions collected from both artificially and naturally infected plants. Fungal structures were not visualized in young lesions. Bacterial primers for the 16S rRNA and rpoB genes were used in PCR reactions 10 amplify DNA extracted from water-soaked (young) and necrotic lesions. The universal fungal oligonucleotide ITS4 was also included to identify the possible presence of funga! structures inside lesions. Positive PCR products from water-soaked lesions, both from naturally and artificially inoculated plants, were produced with bacterial primers, whereas no amplification was observed when ITS4 oligonucleotide was used. On the other hand, DNA amplification with ITS4 primer was observed when DNA was isolated from necrotic (old) lesions. These results reinforced previous report of P. ananatis as the primary pathogen and the hypothesis that fungal species may colonize lesions pre-established by P. ananatis.
650 $aMilho
650 $aZea Mays
653 $aDoença bacteriana do milho
653 $adoenças foliares do milho
653 $aMaize bacterial disease
653 $aMaize leaf disease
700 1 $aSOUZA-PACCOLA, E. A.
700 1 $aMASSOLA JUNIOR, N. S.
700 1 $aMARRIEL, I. E.
700 1 $aMEIRELLES, W. F.
700 1 $aCASELA, C. R.
700 1 $aPACCOLA-MEIRELLES, L. D.
773 $tTropical Plant Pathology, Brasília$gv. 33, n. 1, p. 63-66, Jan./Feb. 2008.
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Embrapa Milho e Sorgo (CNPMS) |
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