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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
15/01/2013 |
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Data da última atualização: |
04/03/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RIBEIRO, R. A.; ROGEL, M. A.; LÓPEZ-LÓPEZ, A.; ORMEÑO-ORRILLO, E.; BARCELLOS, F. G.; MARTÍNEZ, J.; THOMPSON, F. L.; MARTÍNEZ-ROMERO, E.; HUNGRIA, M. |
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Afiliação: |
RENAN AUGUSTO RIBEIRO, CNPSO; MARCO A. ROGEL, UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO - CUERNAVANA - MORELOS; ALINE LÓPEZ-LÓPEZ, UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO - CUERNAVACA - MORELOS; ERNESTO ORMEÑO-ORRILLO; FERNANDO GOMES BARCELLOS, UNIPAR; JULIO MARTÍNEZ, UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO - CUERNAVANA - MORELOS; FABIANO LOPES THOMPSON, UFRJ- CENTER OF HEALTH SCIENCES; ESPERANZA MARTÍNEZ-ROMERO, UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO - CUERNAVANA - MORELOS; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Reclassification of Rhizobium tropical type A strains as Rhizobium leucaenae sp. nov. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
International Journal of Systematic and Evolutionary Microbiology, Reading, v. 62 , Pt. 5, p. 1179-1184, 2012. |
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DOI: |
10.1099 |
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Idioma: |
Português |
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Conteúdo: |
Rhizobium tropici is a well-studied legume symbiont characterized by high genetic stability of the symbiotic plasmid and tolerance to tropical environmental stresses such as high temperature and low soil pH. However, high phenetic and genetic variabilities among R. tropici strains have been largely reported, with two subgroups, designated type A and B, already defined within the species. A polyphasic study comprising multilocus sequence analysis, phenotypic and genotypic characterizations, including DNA?DNA hybridization, strongly supported the reclassification of R. tropici type A strains as a novel species. Type A strains formed a well-differentiated clade that grouped with R. tropici, Rhizobium multihospitium, Rhizobium miluonense, Rhizobium lusitanum and Rhizobium rhizogenes in the phylogenies of the 16S rRNA, recA, gltA, rpoA, glnII and rpoB genes. Several phenotypic traits differentiated type A strains from all related taxa. The novel species, for which the name Rhizobium leucaenae sp. nov. is proposed, is a broad host range rhizobium being able to establish effective root-nodule symbioses with Leucaena leucocephala, Leucaena esculenta, common beans (Phaseolus vulgaris) and Gliricidia sepium. Strain CFN 299 T (5USDA 9039 T 5LMG 9517 T 5CECT 4844 T 5JCM 21088 T 5IAM 14230 5SEMIA 4083 T 5CENA 183 T 5UMR1026 T 5CNPSo 141 T ) is designated the type strain of Rhizobium leucaenae sp. nov. |
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Thesagro: |
Soja. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02163naa a2200241 a 4500
001 1945213
005 2016-03-04
008 2012 bl uuuu u00u1 u #d
024 7 $a10.1099$2DOI
100 1 $aRIBEIRO, R. A.
245 $aReclassification of Rhizobium tropical type A strains as Rhizobium leucaenae sp. nov.$h[electronic resource]
260 $c2012
520 $aRhizobium tropici is a well-studied legume symbiont characterized by high genetic stability of the symbiotic plasmid and tolerance to tropical environmental stresses such as high temperature and low soil pH. However, high phenetic and genetic variabilities among R. tropici strains have been largely reported, with two subgroups, designated type A and B, already defined within the species. A polyphasic study comprising multilocus sequence analysis, phenotypic and genotypic characterizations, including DNA?DNA hybridization, strongly supported the reclassification of R. tropici type A strains as a novel species. Type A strains formed a well-differentiated clade that grouped with R. tropici, Rhizobium multihospitium, Rhizobium miluonense, Rhizobium lusitanum and Rhizobium rhizogenes in the phylogenies of the 16S rRNA, recA, gltA, rpoA, glnII and rpoB genes. Several phenotypic traits differentiated type A strains from all related taxa. The novel species, for which the name Rhizobium leucaenae sp. nov. is proposed, is a broad host range rhizobium being able to establish effective root-nodule symbioses with Leucaena leucocephala, Leucaena esculenta, common beans (Phaseolus vulgaris) and Gliricidia sepium. Strain CFN 299 T (5USDA 9039 T 5LMG 9517 T 5CECT 4844 T 5JCM 21088 T 5IAM 14230 5SEMIA 4083 T 5CENA 183 T 5UMR1026 T 5CNPSo 141 T ) is designated the type strain of Rhizobium leucaenae sp. nov.
650 $aSoja
700 1 $aROGEL, M. A.
700 1 $aLÓPEZ-LÓPEZ, A.
700 1 $aORMEÑO-ORRILLO, E.
700 1 $aBARCELLOS, F. G.
700 1 $aMARTÍNEZ, J.
700 1 $aTHOMPSON, F. L.
700 1 $aMARTÍNEZ-ROMERO, E.
700 1 $aHUNGRIA, M.
773 $tInternational Journal of Systematic and Evolutionary Microbiology, Reading$gv. 62 , Pt. 5, p. 1179-1184, 2012.
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Embrapa Soja (CNPSO) |
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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: |
21/08/2006 |
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Data da última atualização: |
28/04/2022 |
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Autoria: |
PHILLIPS, O. L.; BAKER, T. R.; ARROYO, L.; HIGUCHI, N.; KILLEEN, T. J.; LAURENCE, W. F.; LEWIS, S. L.; LLOYD, J.; MALHI, Y.; MONTEAGUDO, A.; NEILL, D. A.; VARGAS, P. N.; SILVA, J. N. M.; TERBORGH, J.; MARTÍNEZ, R. V.; ALEXIADES, M.; ALMEIDA, S.; BROWN, S.; CHAVES, J.; COMISKEY, J. A.; CZIMCZIK, C. I.; DI FIORE, A.; ERWIN, T.; KUEBLER, C.; LAURANCE, S. G.; NASCIMENTO, H. E. M.; OLIVIER, J.; PALACIOS, W.; PATIÑO, S.; PITMAN, N. C. A.; QUESADA, C. A.; SALDIAS, M.; LEZAMA, A. T.; VINCETI, B. |
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Afiliação: |
JOSÉ NATALINO MACEDO SILVA, CPATU. |
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Título: |
Pattern and process in Amazon tree turnover, 1976-2001. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Philippine Transactions of Royal Society of London. B, v. 359, n. 1443, p. 381-407, 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
Previous work has shown that tree turnover, tree biomass and large liana densities have increased in mature tropical forest plots in the late twentieth century. These results point to a concerted shift in forest ecological processes that may already be having significant impacts on terrestrial carbon stocks, fluxes and biodiversity. However, the findings have proved controversial, partly because a rather limited number of permanent plots have been monitored for rather short periods. The aim of this paper is to characterize regional-scale patterns of 'tree turnover' (the rate with which trees die and recruit into a population) by using improved datasets now available for Amazonia that span the past 25 years. Specifically, we assess whether concerted changes in turnover are occurring, and if so whether they are general throughout the Amazon or restricted to one region or environmental zone. In addition, we ask whether they are driven by changes in recruitment, mortality or both. We find that: (i) trees 10 cm or more in diameter recruit and die twice as fast on the richer soils of southern and western Amazonia than on the poorer soils of eastern and central Amazonia; (ii) turnover rates have increased throughout Amazonia over the past two decades; (iii) mortality and recruitment rates have both increased significantly in every region and environmental zone, with the exception of mortality in eastern Amazonia; (iv) recruitment rates have consistently exceeded mortality rates; (v) absolute increases in recruitment and mortality rates are greatest in western Amazonian sites; and (vi) mortality appears to be lagging recruitment at regional scales. These spatial patterns and temporal trends are not caused by obvious artefacts in the data or the analyses. The trends cannot be directly driven by a mortality driver (such as increased drought or fragmentation-related death) because the biomass in these forests has simultaneously increased. Our findings therefore indicate that long-acting and widespread environmental changes are stimulating the growth and productivity of Amazon forests. MenosPrevious work has shown that tree turnover, tree biomass and large liana densities have increased in mature tropical forest plots in the late twentieth century. These results point to a concerted shift in forest ecological processes that may already be having significant impacts on terrestrial carbon stocks, fluxes and biodiversity. However, the findings have proved controversial, partly because a rather limited number of permanent plots have been monitored for rather short periods. The aim of this paper is to characterize regional-scale patterns of 'tree turnover' (the rate with which trees die and recruit into a population) by using improved datasets now available for Amazonia that span the past 25 years. Specifically, we assess whether concerted changes in turnover are occurring, and if so whether they are general throughout the Amazon or restricted to one region or environmental zone. In addition, we ask whether they are driven by changes in recruitment, mortality or both. We find that: (i) trees 10 cm or more in diameter recruit and die twice as fast on the richer soils of southern and western Amazonia than on the poorer soils of eastern and central Amazonia; (ii) turnover rates have increased throughout Amazonia over the past two decades; (iii) mortality and recruitment rates have both increased significantly in every region and environmental zone, with the exception of mortality in eastern Amazonia; (iv) recruitment rates have consistently exceeded mortality rates; (v... Mostrar Tudo |
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Palavras-Chave: |
Brasil. |
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Thesagro: |
Desenvolvimento Florestal; Produção Florestal. |
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Thesaurus NAL: |
Amazonia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03604naa a2200565 a 4500
001 1408524
005 2022-04-28
008 2004 bl uuuu u00u1 u #d
100 1 $aPHILLIPS, O. L.
245 $aPattern and process in Amazon tree turnover, 1976-2001.$h[electronic resource]
260 $c2004
520 $aPrevious work has shown that tree turnover, tree biomass and large liana densities have increased in mature tropical forest plots in the late twentieth century. These results point to a concerted shift in forest ecological processes that may already be having significant impacts on terrestrial carbon stocks, fluxes and biodiversity. However, the findings have proved controversial, partly because a rather limited number of permanent plots have been monitored for rather short periods. The aim of this paper is to characterize regional-scale patterns of 'tree turnover' (the rate with which trees die and recruit into a population) by using improved datasets now available for Amazonia that span the past 25 years. Specifically, we assess whether concerted changes in turnover are occurring, and if so whether they are general throughout the Amazon or restricted to one region or environmental zone. In addition, we ask whether they are driven by changes in recruitment, mortality or both. We find that: (i) trees 10 cm or more in diameter recruit and die twice as fast on the richer soils of southern and western Amazonia than on the poorer soils of eastern and central Amazonia; (ii) turnover rates have increased throughout Amazonia over the past two decades; (iii) mortality and recruitment rates have both increased significantly in every region and environmental zone, with the exception of mortality in eastern Amazonia; (iv) recruitment rates have consistently exceeded mortality rates; (v) absolute increases in recruitment and mortality rates are greatest in western Amazonian sites; and (vi) mortality appears to be lagging recruitment at regional scales. These spatial patterns and temporal trends are not caused by obvious artefacts in the data or the analyses. The trends cannot be directly driven by a mortality driver (such as increased drought or fragmentation-related death) because the biomass in these forests has simultaneously increased. Our findings therefore indicate that long-acting and widespread environmental changes are stimulating the growth and productivity of Amazon forests.
650 $aAmazonia
650 $aDesenvolvimento Florestal
650 $aProdução Florestal
653 $aBrasil
700 1 $aBAKER, T. R.
700 1 $aARROYO, L.
700 1 $aHIGUCHI, N.
700 1 $aKILLEEN, T. J.
700 1 $aLAURENCE, W. F.
700 1 $aLEWIS, S. L.
700 1 $aLLOYD, J.
700 1 $aMALHI, Y.
700 1 $aMONTEAGUDO, A.
700 1 $aNEILL, D. A.
700 1 $aVARGAS, P. N.
700 1 $aSILVA, J. N. M.
700 1 $aTERBORGH, J.
700 1 $aMARTÍNEZ, R. V.
700 1 $aALEXIADES, M.
700 1 $aALMEIDA, S.
700 1 $aBROWN, S.
700 1 $aCHAVES, J.
700 1 $aCOMISKEY, J. A.
700 1 $aCZIMCZIK, C. I.
700 1 $aDI FIORE, A.
700 1 $aERWIN, T.
700 1 $aKUEBLER, C.
700 1 $aLAURANCE, S. G.
700 1 $aNASCIMENTO, H. E. M.
700 1 $aOLIVIER, J.
700 1 $aPALACIOS, W.
700 1 $aPATIÑO, S.
700 1 $aPITMAN, N. C. A.
700 1 $aQUESADA, C. A.
700 1 $aSALDIAS, M.
700 1 $aLEZAMA, A. T.
700 1 $aVINCETI, B.
773 $tPhilippine Transactions of Royal Society of London. B$gv. 359, n. 1443, p. 381-407, 2004.
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