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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
24/08/2012 |
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Data da última atualização: |
20/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MARICHAL, R.; GRIMALDI, M.; MATHIEU, J.; BROWN, G. G.; SILVA JUNIOR, M. L. da; PRAXEDES, C.; MARTINS, M. B.; VELASQUEZ, E.; LAVELLE, P. |
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Afiliação: |
RAPHAEL MARICHAL, Museu Paraense Emilio Goeldi; MICHEL GRIMALDI, RD, UMR Bioemco; JEROME MATHIEU, UPMC Université Paris; GEORGE GARDNER BROWN, CNPF; MARIO LOPES DA SILVA JUNIOR, UFRA; CATARINA PRAXEDES, Museu Paraense Emilio Goeldi; MARLUCIA B. MARTINS, Museu Paraense Emilio Goeldi; ELENA VELASQUEZ, Universidad Nacional de Colombia; PATRICK LAVELLE, Centro Internacional de Agricultura Tropical (CIAT). |
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Título: |
Is invasion of deforested Amazonia by the earthworm Pontoscolex corethrurus driven by soil texture and chemical properties? |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Pedobiologia, v. 55, p. 233-240, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Pontoscolex corethurus (Müller, 1857) is the most common invasive earthworm in disturbed lands in the tropics. Conditions required for its successful colonization of new plots are still not understood since some areas can be invaded while others, sometimes in the vicinity, are not. We kept newly hatched P. corethrurus in a wide range of Amazonian soils where population densities had been previously evaluated. We identified soil conditions that best sustain survival, soil ingestion and growth of P. corethrurus in controlled laboratory conditions and checked if presence/absence in the field was consistent with laboratory observations. While pH and Ca influenced survival; Mg and C content were the greatest determinants for growth and C:P, Mg and clay contents determined soil ingestion rates. Soil ingestion and growth rate were correlated. There were no differences in earthworm soil ingestion rates between invaded and non-invaded soils. However, growth rate and survival were higher in soils from invaded sites than in soils from non invaded sites, indicating that soil quality may play a role in the invasion process. We identified two cases where P. corethrurus did not occur: (1) unfavourable soil texture and chemical properties, but also some areas with and (2) favourable soil texture and chemical properties but no invasion. Other parameters, like vegetation cover (grass or trees), soil structure and compaction, soil hydrologic processes or biotic resistance of native earthworm communities could potentially also be key elements for understanding why P. corethrurus populations occur in some sites and not in others. MenosPontoscolex corethurus (Müller, 1857) is the most common invasive earthworm in disturbed lands in the tropics. Conditions required for its successful colonization of new plots are still not understood since some areas can be invaded while others, sometimes in the vicinity, are not. We kept newly hatched P. corethrurus in a wide range of Amazonian soils where population densities had been previously evaluated. We identified soil conditions that best sustain survival, soil ingestion and growth of P. corethrurus in controlled laboratory conditions and checked if presence/absence in the field was consistent with laboratory observations. While pH and Ca influenced survival; Mg and C content were the greatest determinants for growth and C:P, Mg and clay contents determined soil ingestion rates. Soil ingestion and growth rate were correlated. There were no differences in earthworm soil ingestion rates between invaded and non-invaded soils. However, growth rate and survival were higher in soils from invaded sites than in soils from non invaded sites, indicating that soil quality may play a role in the invasion process. We identified two cases where P. corethrurus did not occur: (1) unfavourable soil texture and chemical properties, but also some areas with and (2) favourable soil texture and chemical properties but no invasion. Other parameters, like vegetation cover (grass or trees), soil structure and compaction, soil hydrologic processes or biotic resistance of native earthworm c... Mostrar Tudo |
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Thesagro: |
Minhoca. |
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Thesaurus Nal: |
Amazonia; Pontoscolex corethrurus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02376naa a2200253 a 4500
001 1932145
005 2015-02-20
008 2012 bl uuuu u00u1 u #d
100 1 $aMARICHAL, R.
245 $aIs invasion of deforested Amazonia by the earthworm Pontoscolex corethrurus driven by soil texture and chemical properties?$h[electronic resource]
260 $c2012
520 $aPontoscolex corethurus (Müller, 1857) is the most common invasive earthworm in disturbed lands in the tropics. Conditions required for its successful colonization of new plots are still not understood since some areas can be invaded while others, sometimes in the vicinity, are not. We kept newly hatched P. corethrurus in a wide range of Amazonian soils where population densities had been previously evaluated. We identified soil conditions that best sustain survival, soil ingestion and growth of P. corethrurus in controlled laboratory conditions and checked if presence/absence in the field was consistent with laboratory observations. While pH and Ca influenced survival; Mg and C content were the greatest determinants for growth and C:P, Mg and clay contents determined soil ingestion rates. Soil ingestion and growth rate were correlated. There were no differences in earthworm soil ingestion rates between invaded and non-invaded soils. However, growth rate and survival were higher in soils from invaded sites than in soils from non invaded sites, indicating that soil quality may play a role in the invasion process. We identified two cases where P. corethrurus did not occur: (1) unfavourable soil texture and chemical properties, but also some areas with and (2) favourable soil texture and chemical properties but no invasion. Other parameters, like vegetation cover (grass or trees), soil structure and compaction, soil hydrologic processes or biotic resistance of native earthworm communities could potentially also be key elements for understanding why P. corethrurus populations occur in some sites and not in others.
650 $aAmazonia
650 $aPontoscolex corethrurus
650 $aMinhoca
700 1 $aGRIMALDI, M.
700 1 $aMATHIEU, J.
700 1 $aBROWN, G. G.
700 1 $aSILVA JUNIOR, M. L. da
700 1 $aPRAXEDES, C.
700 1 $aMARTINS, M. B.
700 1 $aVELASQUEZ, E.
700 1 $aLAVELLE, P.
773 $tPedobiologia$gv. 55, p. 233-240, 2012.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
30/12/2019 |
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Data da última atualização: |
30/12/2019 |
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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: |
BIGI, M.; VAZQUEZ, C. L.; CASTELÃO, A. B. C.; GARCÍA, E. A.; CATALDI, A. A.; JACKSON, M.; MAcNEIL, M.; SORIA, M.; ZUMÁRRAGA, M. J.; MATIAS, C.; GAGO, G.; BLANCO, F. C.; NISHIBEF, C.; ALMEIDA, N. F.; ARAUJO, F. R.; BIGI, F. |
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Afiliação: |
Mercedes Bigi, Universidad de Buenos Aires, Facultad de Agronomía, Cátedra de Microbiología Agrícola, INBA-CONICET; Cristina Lourdes Vazquez, Universidad de Buenos Aires, Facultad de Agronomía, Cátedra de Microbiología Agrícola, INBA-CONICET; Ana Beatriz C Castelão, Universidad de Buenos Aires, Facultad de Agronomía, Cátedra de Microbiología Agrícola, INBA-CONICET; Elizabeth Andrea García, Instituto de Biotecnología, IABIMO, CICVyA/INTA; Angel A Cataldi, Instituto de Biotecnología, IABIMO, CICVyA/INTA; Mary Jackson, Colorado State University, Dept. of Microbiology, Immunology and Pathology; Michael McNeil, Colorado State University, Dept. of Microbiology, Immunology and Pathology; Marcelo Soria, Universidad de Buenos Aires, Facultad de Agronomía, Cátedra de Microbiología Agrícola, INBA-CONICET; Martín J Zumárraga, Instituto de Biotecnología, IABIMO, CICVyA/INTA; Matias Cabruja, Laboratory of Physiology and Genetics of Actinomycetes, Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario; Gabriela Gago, Laboratory of Physiology and Genetics of Actinomycetes, Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario; Federico C Blanco, Instituto de Biotecnología, IABIMO, CICVyA/INTA; Christiane Nishibef, Universidade Federal de Mato Grosso do Sul - UFMS/Faculdade de Computação; Nalvo F Almeida, Universidade Federal de Mato Grosso do Sul - UFMS/Faculdade de Computação; FLABIO RIBEIRO DE ARAUJO, CNPGC; Fabiana Bigi, Instituto de Biotecnología, IABIMO, CICVyA/INTA. |
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Título: |
Analysing nonsynonymous mutations between two Mycobacterium bovis strains with contrasting pathogenic profiles. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Veterinary Microbiology, v. 239, 2019. |
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Idioma: |
Inglês |
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Conteúdo: |
Mycobacterium bovis (M. bovis) is the causative agent of bovine tuberculosis, a chronic infectious disease that can affect cattle, other domesticated species, wild animals and humans. This disease produces important economic losses worldwide. Two M. bovis strains (04-303 and 534) have been isolated in Argentina. Whereas the 04-303 strain was isolated from a wild boar, the 534 strain was obtained from cattle. In a previous study, six weeks after infection, the 04-303 strain induced 100% mortality in mice. By contrast, mice infected with the 534 strain survived, with limited tissue damage, after four months. In this study we compared all predictive proteins encoded in both M. bovis genomes. The comparative analysis revealed 141 polymorphic proteins between both strains. From these proteins, nine virulence proteins showed polymorphisms in 04-303, whereas five did it in the 534 strain. Remarkably, both strains contained a high level of polymorphism in proteins related to phthiocerol dimycocerosate (PDIM) synthesis or transport. Further experimental evidence indicated that only mutations in the 534 strain have an impact on PDIM synthesis. The observed reduction in PDIM content in the 534 strain, together with its low capacity to induce phagosome arrest, may be associated with the reported deficiency of this strain to replicate and survive inside bovine macrophages. The findings of this study could contribute to a better understanding of pathogenicity and virulence aspects of M. bovis, which is essential for further studies aiming at developing new vaccines and diagnostic techniques for bovines. MenosMycobacterium bovis (M. bovis) is the causative agent of bovine tuberculosis, a chronic infectious disease that can affect cattle, other domesticated species, wild animals and humans. This disease produces important economic losses worldwide. Two M. bovis strains (04-303 and 534) have been isolated in Argentina. Whereas the 04-303 strain was isolated from a wild boar, the 534 strain was obtained from cattle. In a previous study, six weeks after infection, the 04-303 strain induced 100% mortality in mice. By contrast, mice infected with the 534 strain survived, with limited tissue damage, after four months. In this study we compared all predictive proteins encoded in both M. bovis genomes. The comparative analysis revealed 141 polymorphic proteins between both strains. From these proteins, nine virulence proteins showed polymorphisms in 04-303, whereas five did it in the 534 strain. Remarkably, both strains contained a high level of polymorphism in proteins related to phthiocerol dimycocerosate (PDIM) synthesis or transport. Further experimental evidence indicated that only mutations in the 534 strain have an impact on PDIM synthesis. The observed reduction in PDIM content in the 534 strain, together with its low capacity to induce phagosome arrest, may be associated with the reported deficiency of this strain to replicate and survive inside bovine macrophages. The findings of this study could contribute to a better understanding of pathogenicity and virulence aspects of M. b... Mostrar Tudo |
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Palavras-Chave: |
Mutations. |
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Thesagro: |
Gene. |
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Thesaurus NAL: |
Genome; Mycobacterium bovis BCG; Virulence. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/207981/1/Analysing-nonsynonymous-mutations.pdf
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Marc: |
LEADER 02585naa a2200361 a 4500
001 2117921
005 2019-12-30
008 2019 bl uuuu u00u1 u #d
100 1 $aBIGI, M.
245 $aAnalysing nonsynonymous mutations between two Mycobacterium bovis strains with contrasting pathogenic profiles.$h[electronic resource]
260 $c2019
520 $aMycobacterium bovis (M. bovis) is the causative agent of bovine tuberculosis, a chronic infectious disease that can affect cattle, other domesticated species, wild animals and humans. This disease produces important economic losses worldwide. Two M. bovis strains (04-303 and 534) have been isolated in Argentina. Whereas the 04-303 strain was isolated from a wild boar, the 534 strain was obtained from cattle. In a previous study, six weeks after infection, the 04-303 strain induced 100% mortality in mice. By contrast, mice infected with the 534 strain survived, with limited tissue damage, after four months. In this study we compared all predictive proteins encoded in both M. bovis genomes. The comparative analysis revealed 141 polymorphic proteins between both strains. From these proteins, nine virulence proteins showed polymorphisms in 04-303, whereas five did it in the 534 strain. Remarkably, both strains contained a high level of polymorphism in proteins related to phthiocerol dimycocerosate (PDIM) synthesis or transport. Further experimental evidence indicated that only mutations in the 534 strain have an impact on PDIM synthesis. The observed reduction in PDIM content in the 534 strain, together with its low capacity to induce phagosome arrest, may be associated with the reported deficiency of this strain to replicate and survive inside bovine macrophages. The findings of this study could contribute to a better understanding of pathogenicity and virulence aspects of M. bovis, which is essential for further studies aiming at developing new vaccines and diagnostic techniques for bovines.
650 $aGenome
650 $aMycobacterium bovis BCG
650 $aVirulence
650 $aGene
653 $aMutations
700 1 $aVAZQUEZ, C. L.
700 1 $aCASTELÃO, A. B. C.
700 1 $aGARCÍA, E. A.
700 1 $aCATALDI, A. A.
700 1 $aJACKSON, M.
700 1 $aMAcNEIL, M.
700 1 $aSORIA, M.
700 1 $aZUMÁRRAGA, M. J.
700 1 $aMATIAS, C.
700 1 $aGAGO, G.
700 1 $aBLANCO, F. C.
700 1 $aNISHIBEF, C.
700 1 $aALMEIDA, N. F.
700 1 $aARAUJO, F. R.
700 1 $aBIGI, F.
773 $tVeterinary Microbiology$gv. 239, 2019.
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