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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
12/01/2011 |
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Data da última atualização: |
19/01/2011 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CUNHA, B. A.; NUNES, M. A.; FREITAS-ASTUA, J. de; BERGAMINI, M. P.; BASTIANEL, M.; NOVELLI, V. M. |
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Afiliação: |
Bruna Aparecida da Cunha, APTA; Maria Andréia Nunes, APTA; JULIANA DE FREITAS ASTUA, CNPMF; Marcela P. Bergamini, APTA; Marinês Bastianel, APTA; Valdenice M. Novelli, APTA. |
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Título: |
Different symptomatic tissues as sources of inoculum to citrus leprosis virus c (CILV-C). |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: CONFERENCE INTERNATIONAL ORGANIZATION CITRUS VIROLOGISTS, 18., Campinas, SP, 2010. Proceedings... Campinas: IOCV, 2010. 1 CD-ROM. |
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Idioma: |
Inglês |
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Notas: |
128-PS2
Publicado também em: Citrus Research & Technology, Cordeirópolis, v. 31, Suplemento, 2010 |
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Conteúdo: |
Citrus leprosis virus C (CiLV-C), transmitted by Brevipalpus sp. (Acari: Tenuipalpidae), is the causal agent of citrus leprosis, a disease that causes estimated annual losses of US$ 100 million in Brazilian orchards. Studies showed that the vector has no ability to transmit the virus to their offspring and needs to feed on infected tissue for the CiLV-C acquisition. Furthermore, the virus does not invade the host systemically, remaining inside the localized lesions it induces in infected tissues. These two features significantly increase the importance of the presence of the inoculum in the orchard, and pruning of symptomatic branches have been recommended as a way to reduce the source of inoculum in the field. However, there is no consistent information on the relative importance of different plant tissues or age of lesions as sources of inoculum. In this study, we evaluated the colonization and multiplication of the mites in branches of different diameters, and the efficiency of these branches, as well as leaves with chlorotic or necrotic lesions as sources of CiLV-C inoculum. A clonal population of B. phoenicis was maintained onto the different tissues for 96 h for viral acquisition. Part of the viruliferous mites were transferred to seedlings of Pera sweet orange (Citrus sinensis L. Osbeck), highly susceptible to CiLV-C, while others were submitted to RT-PCR to confirm the presence of the virus. After two weeks, large numbers of eggs and nymphs were observed on the branches, suggesting efficient colonization from the mites. Leprosis symptoms were observed in citrus seedlings infested with mites maintained in leaves and branches as sources of inoculum. Our data suggest that CiLV-C is present in both tissues and different types of lesions, which may play a role as sources of inoculum in the field. MenosCitrus leprosis virus C (CiLV-C), transmitted by Brevipalpus sp. (Acari: Tenuipalpidae), is the causal agent of citrus leprosis, a disease that causes estimated annual losses of US$ 100 million in Brazilian orchards. Studies showed that the vector has no ability to transmit the virus to their offspring and needs to feed on infected tissue for the CiLV-C acquisition. Furthermore, the virus does not invade the host systemically, remaining inside the localized lesions it induces in infected tissues. These two features significantly increase the importance of the presence of the inoculum in the orchard, and pruning of symptomatic branches have been recommended as a way to reduce the source of inoculum in the field. However, there is no consistent information on the relative importance of different plant tissues or age of lesions as sources of inoculum. In this study, we evaluated the colonization and multiplication of the mites in branches of different diameters, and the efficiency of these branches, as well as leaves with chlorotic or necrotic lesions as sources of CiLV-C inoculum. A clonal population of B. phoenicis was maintained onto the different tissues for 96 h for viral acquisition. Part of the viruliferous mites were transferred to seedlings of Pera sweet orange (Citrus sinensis L. Osbeck), highly susceptible to CiLV-C, while others were submitted to RT-PCR to confirm the presence of the virus. After two weeks, large numbers of eggs and nymphs were observed on the branc... Mostrar Tudo |
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Palavras-Chave: |
Brevipalpus sp; Citrus sinensis L. Osbeck; Plant disease. |
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Thesagro: |
Doença de Planta. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02673nam a2200229 a 4500
001 1872747
005 2011-01-19
008 2010 bl uuuu u00u1 u #d
100 1 $aCUNHA, B. A.
245 $aDifferent symptomatic tissues as sources of inoculum to citrus leprosis virus c (CILV-C).
260 $aIn: CONFERENCE INTERNATIONAL ORGANIZATION CITRUS VIROLOGISTS, 18., Campinas, SP, 2010. Proceedings... Campinas: IOCV, 2010. 1 CD-ROM.$c2010
500 $a128-PS2 Publicado também em: Citrus Research & Technology, Cordeirópolis, v. 31, Suplemento, 2010
520 $aCitrus leprosis virus C (CiLV-C), transmitted by Brevipalpus sp. (Acari: Tenuipalpidae), is the causal agent of citrus leprosis, a disease that causes estimated annual losses of US$ 100 million in Brazilian orchards. Studies showed that the vector has no ability to transmit the virus to their offspring and needs to feed on infected tissue for the CiLV-C acquisition. Furthermore, the virus does not invade the host systemically, remaining inside the localized lesions it induces in infected tissues. These two features significantly increase the importance of the presence of the inoculum in the orchard, and pruning of symptomatic branches have been recommended as a way to reduce the source of inoculum in the field. However, there is no consistent information on the relative importance of different plant tissues or age of lesions as sources of inoculum. In this study, we evaluated the colonization and multiplication of the mites in branches of different diameters, and the efficiency of these branches, as well as leaves with chlorotic or necrotic lesions as sources of CiLV-C inoculum. A clonal population of B. phoenicis was maintained onto the different tissues for 96 h for viral acquisition. Part of the viruliferous mites were transferred to seedlings of Pera sweet orange (Citrus sinensis L. Osbeck), highly susceptible to CiLV-C, while others were submitted to RT-PCR to confirm the presence of the virus. After two weeks, large numbers of eggs and nymphs were observed on the branches, suggesting efficient colonization from the mites. Leprosis symptoms were observed in citrus seedlings infested with mites maintained in leaves and branches as sources of inoculum. Our data suggest that CiLV-C is present in both tissues and different types of lesions, which may play a role as sources of inoculum in the field.
650 $aDoença de Planta
653 $aBrevipalpus sp
653 $aCitrus sinensis L. Osbeck
653 $aPlant disease
700 1 $aNUNES, M. A.
700 1 $aFREITAS-ASTUA, J. de
700 1 $aBERGAMINI, M. P.
700 1 $aBASTIANEL, M.
700 1 $aNOVELLI, V. M.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
25/03/1992 |
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Data da última atualização: |
25/03/1992 |
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Autoria: |
ADAMOLI, J.; FUKUHARA, M.; SILVA, J. A. da. |
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Título: |
Aplicacao de tecnicas de sensoriamento remoto no estudo de queimas em pastagens nativas da regiao dos cerrados. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
In: JAPAN INTERNATIONAL COOPERATION AGENCY. Trabalhos tecnico-cientificos desenvolvidos pelo Projeto de Cooperacao em Pesquisa Agricola nos Cerrados do Brasil: 1980-1983. Planaltina: EMBRAPA-CPAC / JICA, 1983. |
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Páginas: |
p.269-276. |
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Idioma: |
Português |
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Notas: |
Trabalho apresentado no 2o. Simposio Brasileiro de Sensoriamento Remoto, 1982, Brasilia, DF. |
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Conteúdo: |
Objetiva conhecer a resposta de um campo nativo submetido a queimas, atraves de: a) coleta no campo e analise no laboratorio, dos parametros que permitam caracterizar a rebrota tais como pesos verde e seco, proteina bruta e outros dados bromatologicos; b) levantamento no campo, das curvas de reflectancia de diferentes faixas espectrais, em distintos periodos post-queima; c) determinacao do numero de incendios ocorridos em sequencia temporal (divesas epocas de diferentes anos); d) definir sobre imagens da area de Brasilia, os niveis densimetricos correspondentes a diversas comunidades vegetais, queimadas ou nao, em diferentes epocas. Os resultados preliminares do estudo, mostram que: a biomassa formada (rebrota) ate um ano depois da queima e inferior a biomassa acumulada no momento da queima; as percentagens de proteina bruta sao altas nos tres primeiros meses post-queima, para depois cairem gradativamente; as faixas do espectro electromagnetico correspondentes ao infravermelho sao as mais sensiveis para registrar a ocorrencia das queimadas, tanto no campo quanto nas imagens; a curva de extincao da resposta densitometrica das queimadas, da-se num prazo de 45-60; o maior numero de queimadas (registradas nas imagens), ocorre no final da epoca seca, particularmente no mes de agosto. |
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Palavras-Chave: |
Brasil; Natural pastures. |
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Thesagro: |
Cerrado; Pastagem Nativa; Queimada; Sensoriamento Remoto; Solo. |
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Thesaurus NAL: |
Brazil; remote sensing; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02308naa a2200289 a 4500
001 1547041
005 1992-03-25
008 1983 bl uuuu u00u1 u #d
100 1 $aADAMOLI, J.
245 $aAplicacao de tecnicas de sensoriamento remoto no estudo de queimas em pastagens nativas da regiao dos cerrados.
260 $c1983
300 $ap.269-276.
500 $aTrabalho apresentado no 2o. Simposio Brasileiro de Sensoriamento Remoto, 1982, Brasilia, DF.
520 $aObjetiva conhecer a resposta de um campo nativo submetido a queimas, atraves de: a) coleta no campo e analise no laboratorio, dos parametros que permitam caracterizar a rebrota tais como pesos verde e seco, proteina bruta e outros dados bromatologicos; b) levantamento no campo, das curvas de reflectancia de diferentes faixas espectrais, em distintos periodos post-queima; c) determinacao do numero de incendios ocorridos em sequencia temporal (divesas epocas de diferentes anos); d) definir sobre imagens da area de Brasilia, os niveis densimetricos correspondentes a diversas comunidades vegetais, queimadas ou nao, em diferentes epocas. Os resultados preliminares do estudo, mostram que: a biomassa formada (rebrota) ate um ano depois da queima e inferior a biomassa acumulada no momento da queima; as percentagens de proteina bruta sao altas nos tres primeiros meses post-queima, para depois cairem gradativamente; as faixas do espectro electromagnetico correspondentes ao infravermelho sao as mais sensiveis para registrar a ocorrencia das queimadas, tanto no campo quanto nas imagens; a curva de extincao da resposta densitometrica das queimadas, da-se num prazo de 45-60; o maior numero de queimadas (registradas nas imagens), ocorre no final da epoca seca, particularmente no mes de agosto.
650 $aBrazil
650 $aremote sensing
650 $asoil
650 $aCerrado
650 $aPastagem Nativa
650 $aQueimada
650 $aSensoriamento Remoto
650 $aSolo
653 $aBrasil
653 $aNatural pastures
700 1 $aFUKUHARA, M.
700 1 $aSILVA, J. A. da
773 $tIn: JAPAN INTERNATIONAL COOPERATION AGENCY. Trabalhos tecnico-cientificos desenvolvidos pelo Projeto de Cooperacao em Pesquisa Agricola nos Cerrados do Brasil: 1980-1983. Planaltina: EMBRAPA-CPAC / JICA, 1983.
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