| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Semiárido. |
|
Data corrente: |
22/06/2020 |
|
Data da última atualização: |
22/06/2020 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
BARROS, B. G. de F.; FREITAS, A. D. S. de; TABOSA, J. N.; LYRA, M. do C. C. P. de; MERGULHÃO, A. C. do E. S.; SILVA, A. F. da; OLIVEIRA, W. da S.; FERNANDES JUNIOR, P. I.; SAMPAIO, E. V. de S. B. |
|
Afiliação: |
Benaia Gonçalves de Franca Barros; Ana Dolores Santiago de Freitas; Jose Nildo Tabosa; Maria do Carmo Catanho Pereira de Lyra; Adalia Cavalcanti do Espirito Santo Mergulhão; Aleksandro Ferreira da Silva; Wagner da Silva Oliveira; PAULO IVAN FERNANDES JUNIOR, CPATSA; Everardo Valadares de Sá Barretto Sampaio. |
|
Título: |
Biological nitrogen fixation in field-grown sorghum under different edaphoclimatic conditions is confirmed by N isotopic signatures. |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Nutrient Cycling in Agroecosystems, v. 117, p. 93-101, 2020. |
|
DOI: |
https://doi.org/10.1007/s10705-020-10051-3 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The association between sorghum and N2-fixing bacteria has been assessed only under limited conditions. We investigated biological nitrogen fixation (BNF) in situ in fifteen sorghum genotypes with dry or succulent culm types under five edaphoclimatic conditions. One randomized block experiment was established in each of five locations, from the humid to the semiarid regions of Pernambuco state, Brazil. BNF was estimated using the 15N natural abundance method by comparing the average d15N value of each sorghum genotype with those of the reference species. High levels of productivity, up to 22 Mg shoot biomass ha-1 in the 3-month cycle, were obtained where rainfall was high, and up to 5 Mg ha-1 was obtained under low rainfall. The nitrogen contents showed a similar pattern as biomass production, and the genotypes with the highest productivity accumulated from 200 to 300 kg N ha-1. BNF ranged from 55 to 78% of plant N in one location and from 36 to 56% in another location, but BNF did not occur in the other three locations. Although the factors that blocked effective symbiosis were not determined, symbiosis was not influenced by P or K availability. The proportion of N2 fixation was similar in the grainproducing, dry culm genotypes and in the sugar-rich, succulent culm genotypes. The sorghum genotypes fixed N2, reaching up to 218 kg ha-1 N, without inoculation with diazotrophs. Therefore, sorghum has a high potential to fix atmospheric N2, but the factors that block N2 fixation must be identified for crop management planning. MenosThe association between sorghum and N2-fixing bacteria has been assessed only under limited conditions. We investigated biological nitrogen fixation (BNF) in situ in fifteen sorghum genotypes with dry or succulent culm types under five edaphoclimatic conditions. One randomized block experiment was established in each of five locations, from the humid to the semiarid regions of Pernambuco state, Brazil. BNF was estimated using the 15N natural abundance method by comparing the average d15N value of each sorghum genotype with those of the reference species. High levels of productivity, up to 22 Mg shoot biomass ha-1 in the 3-month cycle, were obtained where rainfall was high, and up to 5 Mg ha-1 was obtained under low rainfall. The nitrogen contents showed a similar pattern as biomass production, and the genotypes with the highest productivity accumulated from 200 to 300 kg N ha-1. BNF ranged from 55 to 78% of plant N in one location and from 36 to 56% in another location, but BNF did not occur in the other three locations. Although the factors that blocked effective symbiosis were not determined, symbiosis was not influenced by P or K availability. The proportion of N2 fixation was similar in the grainproducing, dry culm genotypes and in the sugar-rich, succulent culm genotypes. The sorghum genotypes fixed N2, reaching up to 218 kg ha-1 N, without inoculation with diazotrophs. Therefore, sorghum has a high potential to fix atmospheric N2, but the factors that block N2 fixation... Mostrar Tudo |
|
Palavras-Chave: |
Fixação biológica de nitrogênio; Técnica de abundância natural. |
|
Thesagro: |
Bactéria; Fixação de Nitrogênio; Nitrogênio; Sorgo. |
|
Thesaurus Nal: |
Biological control; Grain sorghum; Sorghum bicolor subsp. bicolor. |
|
Categoria do assunto: |
G Melhoramento Genético |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/214133/1/Biological-nitrogen-fixation-2020.pdf
|
|
Marc: |
LEADER 02683naa a2200337 a 4500
001 2123405
005 2020-06-22
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10705-020-10051-3$2DOI
100 1 $aBARROS, B. G. de F.
245 $aBiological nitrogen fixation in field-grown sorghum under different edaphoclimatic conditions is confirmed by N isotopic signatures.$h[electronic resource]
260 $c2020
520 $aThe association between sorghum and N2-fixing bacteria has been assessed only under limited conditions. We investigated biological nitrogen fixation (BNF) in situ in fifteen sorghum genotypes with dry or succulent culm types under five edaphoclimatic conditions. One randomized block experiment was established in each of five locations, from the humid to the semiarid regions of Pernambuco state, Brazil. BNF was estimated using the 15N natural abundance method by comparing the average d15N value of each sorghum genotype with those of the reference species. High levels of productivity, up to 22 Mg shoot biomass ha-1 in the 3-month cycle, were obtained where rainfall was high, and up to 5 Mg ha-1 was obtained under low rainfall. The nitrogen contents showed a similar pattern as biomass production, and the genotypes with the highest productivity accumulated from 200 to 300 kg N ha-1. BNF ranged from 55 to 78% of plant N in one location and from 36 to 56% in another location, but BNF did not occur in the other three locations. Although the factors that blocked effective symbiosis were not determined, symbiosis was not influenced by P or K availability. The proportion of N2 fixation was similar in the grainproducing, dry culm genotypes and in the sugar-rich, succulent culm genotypes. The sorghum genotypes fixed N2, reaching up to 218 kg ha-1 N, without inoculation with diazotrophs. Therefore, sorghum has a high potential to fix atmospheric N2, but the factors that block N2 fixation must be identified for crop management planning.
650 $aBiological control
650 $aGrain sorghum
650 $aSorghum bicolor subsp. bicolor
650 $aBactéria
650 $aFixação de Nitrogênio
650 $aNitrogênio
650 $aSorgo
653 $aFixação biológica de nitrogênio
653 $aTécnica de abundância natural
700 1 $aFREITAS, A. D. S. de
700 1 $aTABOSA, J. N.
700 1 $aLYRA, M. do C. C. P. de
700 1 $aMERGULHÃO, A. C. do E. S.
700 1 $aSILVA, A. F. da
700 1 $aOLIVEIRA, W. da S.
700 1 $aFERNANDES JUNIOR, P. I.
700 1 $aSAMPAIO, E. V. de S. B.
773 $tNutrient Cycling in Agroecosystems$gv. 117, p. 93-101, 2020.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Semiárido (CPATSA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Unidades Centrais. |
|
Data corrente: |
06/12/2016 |
|
Data da última atualização: |
06/12/2016 |
|
Autoria: |
ALMEIDA, D. S.; SANTOS, A. C. dos; SILVA, C. L. R. da; ORIÁ, A. P.; OLIVEIRA, A. V. D.; LIBÓRIO, F. A.; ATHANAZIO, D. A.; PINNA, M. H. |
|
Afiliação: |
DANIELA S. ALMEIDA, UFBA/Fundação Oswaldo Cruz; ANDRÉIA C. DOS SANTOS, Cenro de Pesquisa Gonçalo Moniz/Fundação Oswaldo Cruz; CAROLINE LUANE R. DA SILVA, Centro de Pesquisa Gonçalo Momiz/Fundação Oswaldo Cruz/Escola Baiana de Medicina e Saúde Pública; ARIANNE P. ORIÁ, UFBA; ALBERTO VINICIUS D. OLIVEIRA, Parque Zoobotânico Getúlio Vargas; FERNANDA A. LIBÓRIO, CETAS; DANIEL A. ATHANAZIO, Centro de Pesquisa Gonçalo Moniz/Fudação Owaldo Cruz/UFBA; MELISSA H. PINNA, UFBA. |
|
Título: |
Evidence of leptospiral exposure in neotropical primates recued from illegal trade and a Zoo in Bahia, Brazil. |
|
Ano de publicação: |
2016 |
|
Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, Brasília, DF, v. 39, n. 9, p. 864-868, set. 2016. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Few studies have compared the seroprevalence of antileptospiral agglutinins with the demonstration of urinary shedding of leptospires or evidence of active infection in the bloodstreams of non-human primates. The study population consists of 58 animals, including d 42 monkeys from the Zoological Park of Salvador (Parque Zoobotânico Getúlio Vargas), Bahia, Brazil. The study also evaluated 16 primates (Cebus sp.) rescued from illegal trade that were housed in the Wildlife Rehabilitation Center of Salvador (CETAS), Bahia, Brazil. The seroprevalence of antileptospiral antibodies was low (2%) in the animals from the Zoo. A higher rate (31%) was observed among the animals that were rescued from illegal trade in the state of Bahia. Even if all the blood and urine samples were negative for leptospiral DNA fragments, the high frequency of serological evidence of exposure suggests a potential risk of leptospirosis transmission when keeping these animals as pets. |
|
Palavras-Chave: |
Primata. |
|
Thesagro: |
Leptospirose. |
|
Thesaurus NAL: |
Leptospira; Leptospirosis; Primates. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/151314/1/Evidence-of-leptospiral-expossure.pdf
|
|
Marc: |
LEADER 01749naa a2200265 a 4500
001 2058047
005 2016-12-06
008 2016 bl uuuu u00u1 u #d
100 1 $aALMEIDA, D. S.
245 $aEvidence of leptospiral exposure in neotropical primates recued from illegal trade and a Zoo in Bahia, Brazil.
260 $c2016
520 $aFew studies have compared the seroprevalence of antileptospiral agglutinins with the demonstration of urinary shedding of leptospires or evidence of active infection in the bloodstreams of non-human primates. The study population consists of 58 animals, including d 42 monkeys from the Zoological Park of Salvador (Parque Zoobotânico Getúlio Vargas), Bahia, Brazil. The study also evaluated 16 primates (Cebus sp.) rescued from illegal trade that were housed in the Wildlife Rehabilitation Center of Salvador (CETAS), Bahia, Brazil. The seroprevalence of antileptospiral antibodies was low (2%) in the animals from the Zoo. A higher rate (31%) was observed among the animals that were rescued from illegal trade in the state of Bahia. Even if all the blood and urine samples were negative for leptospiral DNA fragments, the high frequency of serological evidence of exposure suggests a potential risk of leptospirosis transmission when keeping these animals as pets.
650 $aLeptospira
650 $aLeptospirosis
650 $aPrimates
650 $aLeptospirose
653 $aPrimata
700 1 $aSANTOS, A. C. dos
700 1 $aSILVA, C. L. R. da
700 1 $aORIÁ, A. P.
700 1 $aOLIVEIRA, A. V. D.
700 1 $aLIBÓRIO, F. A.
700 1 $aATHANAZIO, D. A.
700 1 $aPINNA, M. H.
773 $tPesquisa Veterinária Brasileira, Brasília, DF$gv. 39, n. 9, p. 864-868, set. 2016.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
