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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
19/07/2011 |
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Data da última atualização: |
23/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PAGANO, M. C.; CABELLO, M. N.; BELLOTE, A. F. J.; SÁ, N. M.; SCOTTI, M. R. |
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Afiliação: |
MARCELA C. PAGANO, UFMG; National University of La Plata; ANTONIO FRANCISCO JURADO BELLOTE, CNPF; NADJA M. SÁ, UFMG; MARIA RITA SCOTTI, UFMG. |
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Título: |
Intercropping system of tropical leguminous species and Eucalyptus camaldulensis, inoculated with rhizobia and/or mycorrhizal fungi in semiarid Brazil. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Agroforestry Systems, v. 74, p. 231-242, 2008. |
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Idioma: |
Inglês |
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Conteúdo: |
For the purpose of reforestation and wood supply the leguminous tree Anadenanthera peregrina, a native species, was intercropped with Eucalyptus camaldulensis in a degraded semiarid area of Brazil. Single and mixed stands of these species were inoculated with Rhizobium and/or arbuscular mycorrhizal fungi (AMF). The growth of all species in mixed stands did not differ from those cultivated in monoculture and land equivalent ratio (LER) exceeded unity in intercropped plots. Inoculated plants showed greater height and diameter growth and dry matter and nutrient concentration in plants of A. peregrina was higher in inoculated single plots. The distribution, composition and density of AMF species was related to the rhizosphere effect of plant species. The intercropped model where all the plants were inoculated achieved soil AMF diversity patterns similar to those of the preserved area and showed also higher soil organic matter, nutrient content as well as a reduction in soil macroporosity. This model of intercropping may be considered as an efficient system for reforestation under semiarid conditions. |
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Palavras-Chave: |
Rizóbio. |
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Thesagro: |
Eucalyptus Camaldulensis; Micorriza. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01771naa a2200205 a 4500
001 1896274
005 2015-02-23
008 2008 bl uuuu u00u1 u #d
100 1 $aPAGANO, M. C.
245 $aIntercropping system of tropical leguminous species and Eucalyptus camaldulensis, inoculated with rhizobia and/or mycorrhizal fungi in semiarid Brazil.$h[electronic resource]
260 $c2008
520 $aFor the purpose of reforestation and wood supply the leguminous tree Anadenanthera peregrina, a native species, was intercropped with Eucalyptus camaldulensis in a degraded semiarid area of Brazil. Single and mixed stands of these species were inoculated with Rhizobium and/or arbuscular mycorrhizal fungi (AMF). The growth of all species in mixed stands did not differ from those cultivated in monoculture and land equivalent ratio (LER) exceeded unity in intercropped plots. Inoculated plants showed greater height and diameter growth and dry matter and nutrient concentration in plants of A. peregrina was higher in inoculated single plots. The distribution, composition and density of AMF species was related to the rhizosphere effect of plant species. The intercropped model where all the plants were inoculated achieved soil AMF diversity patterns similar to those of the preserved area and showed also higher soil organic matter, nutrient content as well as a reduction in soil macroporosity. This model of intercropping may be considered as an efficient system for reforestation under semiarid conditions.
650 $aEucalyptus Camaldulensis
650 $aMicorriza
653 $aRizóbio
700 1 $aCABELLO, M. N.
700 1 $aBELLOTE, A. F. J.
700 1 $aSÁ, N. M.
700 1 $aSCOTTI, M. R.
773 $tAgroforestry Systems$gv. 74, p. 231-242, 2008.
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Embrapa Florestas (CNPF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
31/03/2012 |
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Data da última atualização: |
31/03/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
PIRANDA, E. M.; FACCINI, J. L. H.; PINTER, A.; PACHECO, R. C.; CANCADO, P. H. D.; LABRUNA, M. B. |
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Afiliação: |
Eliane M. Piranda, Curso de Medicina Veterinaria, Escola Superior Batista do Amazonas (ESBAM); Joao Luiz H. Faccini, UFRRJ; Adriano Pinter, Superintendencia de Controle de Endemias, SUCEN, Sao Paulo; Richard C. Pacheco, UFMT; PAULO HENRIQUE DUARTE CANCADO, CNPGC; Marcelo B. Labruna, USP. |
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Título: |
Experimental infection of Rhipicephalus sanguineus ticks with the Bacterium Rickettsia rickettsii, using experimentally infected dogs. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Vector-Borne and Zoonotic Diseases, v.11, n.1, p.29-36, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
We evaluated if Rickettsia rickettsii-experimentally infected dogs could serve as amplifier hosts for Rhipicephalus sanguineus ticks. In addition, we checked if Rh. sanguineus ticks that acquired Ri. rickettsii from dogs could transmit the bacterium to susceptible hosts (vector competence), and if these ticks could maintain the bacterium by transstadial and transovarial transmissions. Uninfected larvae, nymphs, and adults of Rh. sanguineus were allowed to feed upon three groups of dogs: groups 1 (G1) and 2 (G2) composed of Ri. rickettsii-infected dogs, infected intraperitoneally and via tick bites, respectively, and group 3 composed of uninfected dogs. After larval and nymphal feeding on rickettsemic dogs, 7.1?15.2% and 35.8?37.9% of the molted nymphs and adults, respectively, were shown by polymerase chain reaction (PCR) to be infected by Ri. rickettsii, confirming that both G1 and G2 dogs were efficient sources of rickettsial infection (amplifier host), resulting in transstadial transmission of the agent. These infected nymphs and adults successfully transmitted Ri. rickettsii to guinea pigs, confirming vector competence after acquisition of the infection from rickettsemic dogs. Transovarial transmission of Ri. rickettsii was observed in engorged females that had been infected as nymphs by feeding on both G1 and G2 dogs, but not in engorged females that acquired the infection during adult feeding on these same dogs. In the first case, filial infection rates were generally <50%. No tick exposed to G3 dogs was infected by rickettsiae in this study. No substantial mortality difference was observed between Ri. rickettsii-infected tick groups (G1 and G2) and uninfected tick group (G3). Our results indicate that dogs can be amplifier hosts of Ri. rickettsii for Rh. sanguineus, although only a minority of immature ticks (<45%) should become infected. It appears that Rh. sanguineus, in the absence of horizontal transmission, would not maintain Ri. rickettsii through successive generations, possibly because of low filial infection rates. MenosWe evaluated if Rickettsia rickettsii-experimentally infected dogs could serve as amplifier hosts for Rhipicephalus sanguineus ticks. In addition, we checked if Rh. sanguineus ticks that acquired Ri. rickettsii from dogs could transmit the bacterium to susceptible hosts (vector competence), and if these ticks could maintain the bacterium by transstadial and transovarial transmissions. Uninfected larvae, nymphs, and adults of Rh. sanguineus were allowed to feed upon three groups of dogs: groups 1 (G1) and 2 (G2) composed of Ri. rickettsii-infected dogs, infected intraperitoneally and via tick bites, respectively, and group 3 composed of uninfected dogs. After larval and nymphal feeding on rickettsemic dogs, 7.1?15.2% and 35.8?37.9% of the molted nymphs and adults, respectively, were shown by polymerase chain reaction (PCR) to be infected by Ri. rickettsii, confirming that both G1 and G2 dogs were efficient sources of rickettsial infection (amplifier host), resulting in transstadial transmission of the agent. These infected nymphs and adults successfully transmitted Ri. rickettsii to guinea pigs, confirming vector competence after acquisition of the infection from rickettsemic dogs. Transovarial transmission of Ri. rickettsii was observed in engorged females that had been infected as nymphs by feeding on both G1 and G2 dogs, but not in engorged females that acquired the infection during adult feeding on these same dogs. In the first case, filial infection rates were generally ... Mostrar Tudo |
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Palavras-Chave: |
Bacterium Rickettsia rickettsii. |
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Thesagro: |
Carrapato; Sanidade Animal. |
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Thesaurus NAL: |
Rhipicephalus sanguineus. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02817naa a2200229 a 4500
001 1921280
005 2012-03-31
008 2011 bl uuuu u00u1 u #d
100 1 $aPIRANDA, E. M.
245 $aExperimental infection of Rhipicephalus sanguineus ticks with the Bacterium Rickettsia rickettsii, using experimentally infected dogs.$h[electronic resource]
260 $c2011
520 $aWe evaluated if Rickettsia rickettsii-experimentally infected dogs could serve as amplifier hosts for Rhipicephalus sanguineus ticks. In addition, we checked if Rh. sanguineus ticks that acquired Ri. rickettsii from dogs could transmit the bacterium to susceptible hosts (vector competence), and if these ticks could maintain the bacterium by transstadial and transovarial transmissions. Uninfected larvae, nymphs, and adults of Rh. sanguineus were allowed to feed upon three groups of dogs: groups 1 (G1) and 2 (G2) composed of Ri. rickettsii-infected dogs, infected intraperitoneally and via tick bites, respectively, and group 3 composed of uninfected dogs. After larval and nymphal feeding on rickettsemic dogs, 7.1?15.2% and 35.8?37.9% of the molted nymphs and adults, respectively, were shown by polymerase chain reaction (PCR) to be infected by Ri. rickettsii, confirming that both G1 and G2 dogs were efficient sources of rickettsial infection (amplifier host), resulting in transstadial transmission of the agent. These infected nymphs and adults successfully transmitted Ri. rickettsii to guinea pigs, confirming vector competence after acquisition of the infection from rickettsemic dogs. Transovarial transmission of Ri. rickettsii was observed in engorged females that had been infected as nymphs by feeding on both G1 and G2 dogs, but not in engorged females that acquired the infection during adult feeding on these same dogs. In the first case, filial infection rates were generally <50%. No tick exposed to G3 dogs was infected by rickettsiae in this study. No substantial mortality difference was observed between Ri. rickettsii-infected tick groups (G1 and G2) and uninfected tick group (G3). Our results indicate that dogs can be amplifier hosts of Ri. rickettsii for Rh. sanguineus, although only a minority of immature ticks (<45%) should become infected. It appears that Rh. sanguineus, in the absence of horizontal transmission, would not maintain Ri. rickettsii through successive generations, possibly because of low filial infection rates.
650 $aRhipicephalus sanguineus
650 $aCarrapato
650 $aSanidade Animal
653 $aBacterium Rickettsia rickettsii
700 1 $aFACCINI, J. L. H.
700 1 $aPINTER, A.
700 1 $aPACHECO, R. C.
700 1 $aCANCADO, P. H. D.
700 1 $aLABRUNA, M. B.
773 $tVector-Borne and Zoonotic Diseases$gv.11, n.1, p.29-36, 2011.
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