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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
09/12/2008 |
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Data da última atualização: |
10/12/2008 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
NICOLINI, F.; BASTIANEL, M.; FREITAS-ÁSTUA, J.; ANTONIOLI-LUIZON, R.; SCHONS, J.; MACHADO, M. A. |
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Afiliação: |
F. Nicolini, CCSM/IAC/UPF; M. Bastianel, CCSM/IAC; Juliana Freitas-Ástua, CNPMF/CCSM/IAC; R. Antonioli-Luizon, CCSM/IAC; J. Schons, UPF; M. A. Machado, CCSM/IAC. |
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Título: |
Quantificação do vírus da leprose dos citros no hospedeiro vegetal. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Summa Phytopathologica, Botucatu, v. 34, , p. 66, fev. 2008. Suplemento. |
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ISSN: |
0100-5405 |
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Idioma: |
Português |
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Notas: |
Edição dos Resumos do XXXI Congresso Paulista de Fitopatologia, Campinas, fev. 2008.
R 199 |
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Conteúdo: |
A leprose é causada pelo vírus da leprose dos citros, tipo citoplasmático (CiLV-C), transmitido de maneira persistente pelo Brevipalpus phoenicis (Acari: Tenuipalpidae). O CiLV-C é restrito à área da lesão, ocorrendo em baixo título na planta hospedeira. O presente estudo teve por objetivo comparar os níveis de resistência de laranja Pêra, tangor Murcott e lima Dourada ao CiLV-C, através da quantificação do vírus por RT-qPCR com base na expressão de quatro genes (MP, p29, p61, Hel). Foram analisados RNAs extraídos de folhas coletadas em 10 tempos após a inoculação pelo vetor e até o aparecimento dos sintomas em laranja Pêra, aos 40 dias. Observou-se um número muito maior de partículas virais em tecidos com lesão (10 7), enquanto em plantas assintomáticas, mesmo em laranja Pêra (altamente suscetível), a quantidade de partículas detectadas (10 a 100) ficou muito próxima do limite de detecção do teste. Aparentemente, tanto o tangor Murcott quanto a lima Dourada, resistentes à leprose, suportam um baixo titulo do vírus. |
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Thesagro: |
Citricultura; Vírus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01777naa a2200229 a 4500
001 1655333
005 2008-12-10
008 2008 bl uuuu u00u1 u #d
022 $a0100-5405
100 1 $aNICOLINI, F.
245 $aQuantificação do vírus da leprose dos citros no hospedeiro vegetal.
260 $c2008
500 $aEdição dos Resumos do XXXI Congresso Paulista de Fitopatologia, Campinas, fev. 2008. R 199
520 $aA leprose é causada pelo vírus da leprose dos citros, tipo citoplasmático (CiLV-C), transmitido de maneira persistente pelo Brevipalpus phoenicis (Acari: Tenuipalpidae). O CiLV-C é restrito à área da lesão, ocorrendo em baixo título na planta hospedeira. O presente estudo teve por objetivo comparar os níveis de resistência de laranja Pêra, tangor Murcott e lima Dourada ao CiLV-C, através da quantificação do vírus por RT-qPCR com base na expressão de quatro genes (MP, p29, p61, Hel). Foram analisados RNAs extraídos de folhas coletadas em 10 tempos após a inoculação pelo vetor e até o aparecimento dos sintomas em laranja Pêra, aos 40 dias. Observou-se um número muito maior de partículas virais em tecidos com lesão (10 7), enquanto em plantas assintomáticas, mesmo em laranja Pêra (altamente suscetível), a quantidade de partículas detectadas (10 a 100) ficou muito próxima do limite de detecção do teste. Aparentemente, tanto o tangor Murcott quanto a lima Dourada, resistentes à leprose, suportam um baixo titulo do vírus.
650 $aCitricultura
650 $aVírus
700 1 $aBASTIANEL, M.
700 1 $aFREITAS-ÁSTUA, J.
700 1 $aANTONIOLI-LUIZON, R.
700 1 $aSCHONS, J.
700 1 $aMACHADO, M. A.
773 $tSumma Phytopathologica, Botucatu$gv. 34, , p. 66, fev. 2008. Suplemento.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amapá. |
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Data corrente: |
12/02/2020 |
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Data da última atualização: |
16/06/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SMITH, M. N.; SCHITTI, J.; GONÇALVES, N.; MINOR, D.; ALMEIDA, D. R. A. de; ROCHA, D. G.; ARAGÓN, S.; MENIN, M.; GUEDES, M. C.; TONINI, H.; SILVA, K. E. da; ROSA, D. M.; NELSON, B. W.; CORDEIRO, C. L. O.; OLIVEIRA JUNIOR, R. C. de; SHAO, G.; SOUZA, M. S.; MCMAHON, S.; ALMEIDA, D.; ARAGÃO, L. E. O. C.; LIMA, N. Z. de; OLIVEIRA, G. de; ASSIS, R. L. de; CAMARGO, J. L.; MESQUITA, R. G.; SALESKA, S. R.; BRESHEARS, D. D.; COSTA, F. R. C.; STARK, S. C. |
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Afiliação: |
MARIELLE NATASHA SMITH, Michigan State University; JULIANA SCHITTI, INPA; NATHAN GONÇALVES, Michigan State University; DAVID MINOR, University of Maryland College Park; DANILO ROBERTI ALVES DE ALMEIDA, USP/ESALQ; DANIEL GOMES ROCHA, INPA; SUSAN ARAGÓN, UFOPA; MARCELO MENIN, UFAM; MARCELINO CARNEIRO GUEDES, CPAF-AP; HELIO TONINI, CPPSUL; KATIA EMIDIO DA SILVA, CPAA; DIOGO MARTINS ROSA, INPA; BRUCE W NELSON, INPA; CARLOS LEANDRO OLIVEIRA CORDEIRO, IIS; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; GANG SHAO, Michigan State University; MENDELL S. SOUZA, UFOPA; SEAN MCMAHON, Smithsonian Environmental Research Center (SERC); DANIEL ALMEIDA, UFOPA; LUIZ E. O. C. ARAGÃO, INPE; NICOLAS ZASLAVSKY DE LIMA, UFOPA; GABRIELA DE OLIVEIRA, University of Kansas; RAFAEL LEANDRO DE ASSIS, INPA; JOSÉ L. CAMARGO, INPA; RITA G MESQUITA, INPA; SCOTT R SALESKA, University of Arizona; DAVID D. BRESHEARS, University of Arizona; FLAVIA REGINA CAPELLOTTO COSTA, INPA; SCOTT C. STARK, Michigan State University. |
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Título: |
Variations in Amazonian forest canopy structure and light environments across environmental and disturbance gradients. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
In: AGU FALL MEETING, 2019, San Francisco. Anais... San Francisco: AGU, 2019. |
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Idioma: |
Inglês |
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Notas: |
Paper 499657. |
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Conteúdo: |
A critical problem in tropical forest ecology is understanding how vegetation structure and function vary over environmental gradients. The degree to which forest structure changes across the Amazon basin and the role of environmental variability in shaping forest structure and dynamics are poorly characterised, despite the importance of these forests for regional and global climate. To address these challenges, we connected 10 years of investigations to amass a large database of ground-based profiling canopy lidar (PCL) data from 297 Amazon forest plots across large-scale environmental and disturbance gradients. Mean annual precipitation varied from 1,963 to 3,159 mm, number of dry season months from 0 to 5, and plot soil types covered about half of the variation in phosphorus, exchangeable cation, and soil physical property values observed in Amazonia. We quantified detailed metrics of vertical and horizontal structure and canopy light environments. Forest structure varied considerably across plots; maximum canopy height ranged from 6.1 to 35.7 m, gap fraction from 0.00 to 0.36, LAI from 0.5 to 7.3, rugosity from 1.5 to 7.5 m, and the relative height of 50% light transmission from 0.3 to 0.8. Disturbed sites exhibited almost twice the level of variation (SD) to non-disturbed sites for many metrics. Vertical leaf area density (LAD) profiles also showed high between plot variability, especially at low and high relative canopy heights. Plots with similar LAD profiles sometimes exhibited different distributions of ?canopy photic environment layers??where canopy leaf area is separated into photic environment layers by depth from canopy surface. This demonstrates that LAD profiles alone are insufficient for characterising canopy environments, essential to light-driven regeneration and carbon cycle processes. In addition, we evaluated relationships between lidar metrics and environmental variables extracted from geospatial layers. Our dataset allows a unique and detailed multi-site analysis of canopy structure and environments across the Amazon, including regions with little or no lidar sampling. Examining how structural attributes alter across environmental gradients is critical to understanding how current and future climate influences Amazonian forest structure, function, and dynamics. MenosA critical problem in tropical forest ecology is understanding how vegetation structure and function vary over environmental gradients. The degree to which forest structure changes across the Amazon basin and the role of environmental variability in shaping forest structure and dynamics are poorly characterised, despite the importance of these forests for regional and global climate. To address these challenges, we connected 10 years of investigations to amass a large database of ground-based profiling canopy lidar (PCL) data from 297 Amazon forest plots across large-scale environmental and disturbance gradients. Mean annual precipitation varied from 1,963 to 3,159 mm, number of dry season months from 0 to 5, and plot soil types covered about half of the variation in phosphorus, exchangeable cation, and soil physical property values observed in Amazonia. We quantified detailed metrics of vertical and horizontal structure and canopy light environments. Forest structure varied considerably across plots; maximum canopy height ranged from 6.1 to 35.7 m, gap fraction from 0.00 to 0.36, LAI from 0.5 to 7.3, rugosity from 1.5 to 7.5 m, and the relative height of 50% light transmission from 0.3 to 0.8. Disturbed sites exhibited almost twice the level of variation (SD) to non-disturbed sites for many metrics. Vertical leaf area density (LAD) profiles also showed high between plot variability, especially at low and high relative canopy heights. Plots with similar LAD profiles sometime... Mostrar Tudo |
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Thesagro: |
Climatologia; Ecologia Florestal; Floresta Tropical. |
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Thesaurus NAL: |
Climatology; Forest ecology; Tropical forests. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/210797/1/CPAF-AP-2019-Variations-in-Amazonian-forest.pdf
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Marc: |
LEADER 03822nam a2200529 a 4500
001 2120215
005 2023-06-16
008 2019 bl uuuu u00u1 u #d
100 1 $aSMITH, M. N.
245 $aVariations in Amazonian forest canopy structure and light environments across environmental and disturbance gradients.$h[electronic resource]
260 $aIn: AGU FALL MEETING, 2019, San Francisco. Anais... San Francisco: AGU$c2019
500 $aPaper 499657.
520 $aA critical problem in tropical forest ecology is understanding how vegetation structure and function vary over environmental gradients. The degree to which forest structure changes across the Amazon basin and the role of environmental variability in shaping forest structure and dynamics are poorly characterised, despite the importance of these forests for regional and global climate. To address these challenges, we connected 10 years of investigations to amass a large database of ground-based profiling canopy lidar (PCL) data from 297 Amazon forest plots across large-scale environmental and disturbance gradients. Mean annual precipitation varied from 1,963 to 3,159 mm, number of dry season months from 0 to 5, and plot soil types covered about half of the variation in phosphorus, exchangeable cation, and soil physical property values observed in Amazonia. We quantified detailed metrics of vertical and horizontal structure and canopy light environments. Forest structure varied considerably across plots; maximum canopy height ranged from 6.1 to 35.7 m, gap fraction from 0.00 to 0.36, LAI from 0.5 to 7.3, rugosity from 1.5 to 7.5 m, and the relative height of 50% light transmission from 0.3 to 0.8. Disturbed sites exhibited almost twice the level of variation (SD) to non-disturbed sites for many metrics. Vertical leaf area density (LAD) profiles also showed high between plot variability, especially at low and high relative canopy heights. Plots with similar LAD profiles sometimes exhibited different distributions of ?canopy photic environment layers??where canopy leaf area is separated into photic environment layers by depth from canopy surface. This demonstrates that LAD profiles alone are insufficient for characterising canopy environments, essential to light-driven regeneration and carbon cycle processes. In addition, we evaluated relationships between lidar metrics and environmental variables extracted from geospatial layers. Our dataset allows a unique and detailed multi-site analysis of canopy structure and environments across the Amazon, including regions with little or no lidar sampling. Examining how structural attributes alter across environmental gradients is critical to understanding how current and future climate influences Amazonian forest structure, function, and dynamics.
650 $aClimatology
650 $aForest ecology
650 $aTropical forests
650 $aClimatologia
650 $aEcologia Florestal
650 $aFloresta Tropical
700 1 $aSCHITTI, J.
700 1 $aGONÇALVES, N.
700 1 $aMINOR, D.
700 1 $aALMEIDA, D. R. A. de
700 1 $aROCHA, D. G.
700 1 $aARAGÓN, S.
700 1 $aMENIN, M.
700 1 $aGUEDES, M. C.
700 1 $aTONINI, H.
700 1 $aSILVA, K. E. da
700 1 $aROSA, D. M.
700 1 $aNELSON, B. W.
700 1 $aCORDEIRO, C. L. O.
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aSHAO, G.
700 1 $aSOUZA, M. S.
700 1 $aMCMAHON, S.
700 1 $aALMEIDA, D.
700 1 $aARAGÃO, L. E. O. C.
700 1 $aLIMA, N. Z. de
700 1 $aOLIVEIRA, G. de
700 1 $aASSIS, R. L. de
700 1 $aCAMARGO, J. L.
700 1 $aMESQUITA, R. G.
700 1 $aSALESKA, S. R.
700 1 $aBRESHEARS, D. D.
700 1 $aCOSTA, F. R. C.
700 1 $aSTARK, S. C.
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Embrapa Amapá (CPAF-AP) |
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