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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Mandioca e Fruticultura. |
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Data corrente: |
13/12/2005 |
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Data da última atualização: |
26/06/2012 |
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Autoria: |
GOTTARDI, M. V. C.; TRAVENSOLO, R. de F.; CAMPANHARO, J. C.; SANTOS, J. M. dos; LEMOS, E. G. M. |
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Afiliação: |
MARIA VITÓRIA CECCHETTI GOTTARDI, FCAV/UNESP; REGIANE DE FÁTIMA TRAVENSOLO, FCAV/UNESP; JOÃO CARLOS CAMPANHARO, FCAV/UNESP; JAIME MAIA DOS SANTOS, FCAV/UNESP; ELIANA GERTRUDES MACEDO LEMOS, FCAV/UNESP. |
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Título: |
Inoculação cruzada da bactéria Xylella fastidiosa em plantas de laranjeira, videira, ameixeira e cafeeiro. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Summa Phytopathologica, Botucatu, v. 30, n. 4, p. 488-493, Oct./Dec. 2004. |
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Idioma: |
Português |
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Conteúdo: |
Inoculações cruzadas da bactéria Xylella fastidiosa foram realizadas em plantas de laranjeira (Citrus sinensis), videira (Vitis vinÍfera), ameixeira (Prunus salicina) e cafeeiro (Coffe arabica). Os isolados de X. fastidiosa utilizados para a inoculação foram: 9a5c (isolado de laranjeira); Temécula (isolado de videira); 6747 (isolado de ameixeira) e Jab 1 (isolado de cafeeiro). Após três meses da primeira inoculação, foram observados sintomas do mal de Pierce (PD) em videira, requeima no cafeeiro (CLS) e escaldadura das folhas (EFA) em ameixeira. Na laranjeira, foi observado sintoma da clorose variegada após 170 dias da primeira inoculação. A presença da bactéria X. fastidiosa foi detectada por PCR utilizando o conjunto de iniciadores RST31/RST33. Nas laranjeiras e cafeeiros, todos os isolados inoculados foram detectados por PCR; nas plantas de ameixeira, foram detectados os isolados 6747 (ameixeira), Jab 1 (cafeeiro) e Temécula (videira); nas plantas de videira, foi detectado apenas o isolado de Temécula, que foi posteriormente reisolado. Através da observação por microscopia eletrônica de varredura (MEV) em alguns tecidos das plantas inoculadas, foi observada a presença de cristais em forma de ráfides no lúmen dos vasos do xilema, sugerindo uma resposta da planta à colonização dos vasos xilemáticos pelos isolados de X. fastidiosa. |
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Palavras-Chave: |
Ameixeira; Cafeeiro; Inoculação cruzada; Laranjeira; Patógeno-hospedeiro; PCR; Videira. |
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Thesagro: |
Xylella Fastidiosa. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02162naa a2200265 a 4500
001 1082958
005 2012-06-26
008 2004 bl uuuu u00u1 u #d
100 1 $aGOTTARDI, M. V. C.
245 $aInoculação cruzada da bactéria Xylella fastidiosa em plantas de laranjeira, videira, ameixeira e cafeeiro.
260 $c2004
520 $aInoculações cruzadas da bactéria Xylella fastidiosa foram realizadas em plantas de laranjeira (Citrus sinensis), videira (Vitis vinÍfera), ameixeira (Prunus salicina) e cafeeiro (Coffe arabica). Os isolados de X. fastidiosa utilizados para a inoculação foram: 9a5c (isolado de laranjeira); Temécula (isolado de videira); 6747 (isolado de ameixeira) e Jab 1 (isolado de cafeeiro). Após três meses da primeira inoculação, foram observados sintomas do mal de Pierce (PD) em videira, requeima no cafeeiro (CLS) e escaldadura das folhas (EFA) em ameixeira. Na laranjeira, foi observado sintoma da clorose variegada após 170 dias da primeira inoculação. A presença da bactéria X. fastidiosa foi detectada por PCR utilizando o conjunto de iniciadores RST31/RST33. Nas laranjeiras e cafeeiros, todos os isolados inoculados foram detectados por PCR; nas plantas de ameixeira, foram detectados os isolados 6747 (ameixeira), Jab 1 (cafeeiro) e Temécula (videira); nas plantas de videira, foi detectado apenas o isolado de Temécula, que foi posteriormente reisolado. Através da observação por microscopia eletrônica de varredura (MEV) em alguns tecidos das plantas inoculadas, foi observada a presença de cristais em forma de ráfides no lúmen dos vasos do xilema, sugerindo uma resposta da planta à colonização dos vasos xilemáticos pelos isolados de X. fastidiosa.
650 $aXylella Fastidiosa
653 $aAmeixeira
653 $aCafeeiro
653 $aInoculação cruzada
653 $aLaranjeira
653 $aPatógeno-hospedeiro
653 $aPCR
653 $aVideira
700 1 $aTRAVENSOLO, R. de F.
700 1 $aCAMPANHARO, J. C.
700 1 $aSANTOS, J. M. dos
700 1 $aLEMOS, E. G. M
773 $tSumma Phytopathologica, Botucatu$gv. 30, n. 4, p. 488-493, Oct./Dec. 2004.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
12/03/2019 |
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Data da última atualização: |
27/12/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
BERENGUER, E.; GARDNER, T. A.; FERREIRA, J. N.; ARAGÃO, L. E. O. C.; NALLY, R. M.; THOMSON, J. R.; VIEIRA, I. C. G.; BARLOW, J. |
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Afiliação: |
Erika Berenguer, University of Oxford / Lancaster University; Toby Alan Gardner, Stockholm Environment Institute / International Institute for Sustainability; JOICE NUNES FERREIRA, CPATU; Luiz E. O. C. Aragão, University of Exeter / INPE; Ralph Mac Nally, University of Canberra / La Trobe University; James R. Thomson, University of Canberra; Ima Célia Guimarães Vieira, MPEG; Jos Barlow, Lancaster University / MPEG. |
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Título: |
Seeing the woods through the saplings: Using wood density to assess the recovery of human-modified Amazonian forests. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Journal of Ecology, v. 106, n. 6, p. 2190-2203, Nov. 2018. |
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DOI: |
10.1111/1365-2745.12991 |
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Idioma: |
Inglês |
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Conteúdo: |
Most of the world's remaining tropical forests have been affected by either selective logging, understorey fires, fragmentation or are regrowing in areas that were previously deforested. Despite the ubiquity of these human?modified forests, we have a limited knowledge of their potential to recover key traits linked to ecosystem processes and consequent services. Here we present data from 31,095 trees and saplings distributed across 121 plots of undisturbed and disturbed primary forests as well as secondary forests in the eastern Amazon. We examined the post?disturbance recovery trajectory of an important plant functional trait, wood density. We tested whether human?modified Amazonian forests are experiencing a rapid or a slow, or even impeded, recovery of this trait, which is associated with the provision of a fundamental ecosystem service?carbon storage. As expected, we found that the plot?level wood density of trees and saplings in disturbed primary and secondary forests was significantly lower than in undisturbed forests. However, there was no significant difference in the average wood density of saplings between disturbed primary and secondary forests, possibly indicating a process of secondarization. We also found evidence that the recovery of wood density in human?modified forests is being severely disrupted due to edge effects (in the case of disturbed primary forests) and high liana densities (in the case of both disturbed primary and secondary forests). Surprisingly, these two factors were more important predictors of wood density recovery than the time elapsed since the disturbance event. Synthesis. Plant communities in human?modified Amazonian forests appear to not be recovering a key functional property?wood density, which in turn may affect their ability to store carbon in the future. If the aim of conservation programs in tropical forests is to maintain existing rates of ecosystem functions, processes and services, then they must concentrate efforts on avoiding anthropogenic disturbance in areas of currently undisturbed forests. It is also vital to prevent further disturbance in human?modified forests to avoid disrupting even more their recovery. MenosMost of the world's remaining tropical forests have been affected by either selective logging, understorey fires, fragmentation or are regrowing in areas that were previously deforested. Despite the ubiquity of these human?modified forests, we have a limited knowledge of their potential to recover key traits linked to ecosystem processes and consequent services. Here we present data from 31,095 trees and saplings distributed across 121 plots of undisturbed and disturbed primary forests as well as secondary forests in the eastern Amazon. We examined the post?disturbance recovery trajectory of an important plant functional trait, wood density. We tested whether human?modified Amazonian forests are experiencing a rapid or a slow, or even impeded, recovery of this trait, which is associated with the provision of a fundamental ecosystem service?carbon storage. As expected, we found that the plot?level wood density of trees and saplings in disturbed primary and secondary forests was significantly lower than in undisturbed forests. However, there was no significant difference in the average wood density of saplings between disturbed primary and secondary forests, possibly indicating a process of secondarization. We also found evidence that the recovery of wood density in human?modified forests is being severely disrupted due to edge effects (in the case of disturbed primary forests) and high liana densities (in the case of both disturbed primary and secondary forests). Surprisingly... Mostrar Tudo |
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Palavras-Chave: |
Densidade; Recuperação. |
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Thesagro: |
Floresta Tropical; Madeira. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02999naa a2200265 a 4500
001 2106968
005 2019-12-27
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1111/1365-2745.12991$2DOI
100 1 $aBERENGUER, E.
245 $aSeeing the woods through the saplings$bUsing wood density to assess the recovery of human-modified Amazonian forests.$h[electronic resource]
260 $c2018
520 $aMost of the world's remaining tropical forests have been affected by either selective logging, understorey fires, fragmentation or are regrowing in areas that were previously deforested. Despite the ubiquity of these human?modified forests, we have a limited knowledge of their potential to recover key traits linked to ecosystem processes and consequent services. Here we present data from 31,095 trees and saplings distributed across 121 plots of undisturbed and disturbed primary forests as well as secondary forests in the eastern Amazon. We examined the post?disturbance recovery trajectory of an important plant functional trait, wood density. We tested whether human?modified Amazonian forests are experiencing a rapid or a slow, or even impeded, recovery of this trait, which is associated with the provision of a fundamental ecosystem service?carbon storage. As expected, we found that the plot?level wood density of trees and saplings in disturbed primary and secondary forests was significantly lower than in undisturbed forests. However, there was no significant difference in the average wood density of saplings between disturbed primary and secondary forests, possibly indicating a process of secondarization. We also found evidence that the recovery of wood density in human?modified forests is being severely disrupted due to edge effects (in the case of disturbed primary forests) and high liana densities (in the case of both disturbed primary and secondary forests). Surprisingly, these two factors were more important predictors of wood density recovery than the time elapsed since the disturbance event. Synthesis. Plant communities in human?modified Amazonian forests appear to not be recovering a key functional property?wood density, which in turn may affect their ability to store carbon in the future. If the aim of conservation programs in tropical forests is to maintain existing rates of ecosystem functions, processes and services, then they must concentrate efforts on avoiding anthropogenic disturbance in areas of currently undisturbed forests. It is also vital to prevent further disturbance in human?modified forests to avoid disrupting even more their recovery.
650 $aFloresta Tropical
650 $aMadeira
653 $aDensidade
653 $aRecuperação
700 1 $aGARDNER, T. A.
700 1 $aFERREIRA, J. N.
700 1 $aARAGÃO, L. E. O. C.
700 1 $aNALLY, R. M.
700 1 $aTHOMSON, J. R.
700 1 $aVIEIRA, I. C. G.
700 1 $aBARLOW, J.
773 $tJournal of Ecology$gv. 106, n. 6, p. 2190-2203, Nov. 2018.
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