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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
27/11/2017 |
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Data da última atualização: |
23/09/2019 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
OLIVEIRA, C. C. S.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da; BATISTA, R. I. T. P.; BALARO, M. F. A.; SARAIVA, H. F. R. de A.; ALFRADIQUE, V. A. P.; CÔRTES, L. R.; BRANDÃO, F. Z. |
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Afiliação: |
Carolina Cerqueira Sarmento Olivares, Universidade Federal Fluminense (UFF) - Niterói, RJ, Brasil; Joanna Maria Gonçalves Souza-Fabjan, UFF - Niterói, RJ, Brasil; Universidade do Grande Rio (Unigranrio) - Duque de Caxias, RJ, Brasil.; JEFERSON FERREIRA DA FONSECA, CNPC; Ribrio Ivan Tavares Pereira Batista, UFF - Niterói, RJ, Brasil; Mario Felipe Alvarez Balaro, UFF - Niterói, RJ, Brasil; Helena Fabiana Reis de Almeida Saraiva, UFF - Niterói, RJ, Brasil; Vivian Angélico Pereira Alfradique; Luana Rangel Côrtes, UFF - Niterói, RJ, Brasil; Felipe Zandonadi Brandão. |
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Título: |
Mini-Percoll processing of domestic ruminant frozen-thawed semen dispenses the use of heparin in capacitating medium. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Revista Brasileira de Reprodução Animal, Belo Horizonte, v. 41, n. 1, p. 498, jan./mar. 2017. |
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Idioma: |
Inglês |
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Notas: |
Edição dos anais do XXII Congresso Brasileiro de Reprodução Animal (CBRA), Santos, SP, Brasil, maio 2017. |
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Conteúdo: |
Sperm capacitation is a prerequisite for mammal successful fertilization. Although usually a capacitating substance such as heparin is used during sheep in vitro fertilization, evidences suggest that the cryopreservation process and Percoll technique could induce spontaneous capacitation. This study aimed to compare ovine, caprine and bovine frozen-thawed sperm after mini-Percoll processing on sperm parameters, receiving or not heparin supplementation. In conclusion, frozen-thawed ovine, caprine and bovine spermatozoa processed with mini-Percoll behave similarly regarding to capacitation status and does not require heparin supplementation during in vitro incubation to achieve capacitation. [Processamento pela técnica de mini-Percoll em sêmen congelado/descongelado de ruminantes domésticos dispensa o uso da heparina em meio capacitante]. |
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Palavras-Chave: |
Capacitação espermática. |
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Thesagro: |
Bovino; Caprino; Heparina; Ovino; Reprodução animal; Sêmen. |
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Thesaurus Nal: |
Cattle; Goats; Heparin; In vitro fertilization; Reproduction; Sheep; sperm capacitation; Spermatozoa. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/167573/1/cnpc-2017-Mini-Percoll.pdf
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Marc: |
LEADER 02128nam a2200397 a 4500
001 2080820
005 2019-09-23
008 2017 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, C. C. S.
245 $aMini-Percoll processing of domestic ruminant frozen-thawed semen dispenses the use of heparin in capacitating medium.$h[electronic resource]
260 $aRevista Brasileira de Reprodução Animal, Belo Horizonte, v. 41, n. 1, p. 498, jan./mar. 2017.$c2017
500 $aEdição dos anais do XXII Congresso Brasileiro de Reprodução Animal (CBRA), Santos, SP, Brasil, maio 2017.
520 $aSperm capacitation is a prerequisite for mammal successful fertilization. Although usually a capacitating substance such as heparin is used during sheep in vitro fertilization, evidences suggest that the cryopreservation process and Percoll technique could induce spontaneous capacitation. This study aimed to compare ovine, caprine and bovine frozen-thawed sperm after mini-Percoll processing on sperm parameters, receiving or not heparin supplementation. In conclusion, frozen-thawed ovine, caprine and bovine spermatozoa processed with mini-Percoll behave similarly regarding to capacitation status and does not require heparin supplementation during in vitro incubation to achieve capacitation. [Processamento pela técnica de mini-Percoll em sêmen congelado/descongelado de ruminantes domésticos dispensa o uso da heparina em meio capacitante].
650 $aCattle
650 $aGoats
650 $aHeparin
650 $aIn vitro fertilization
650 $aReproduction
650 $aSheep
650 $asperm capacitation
650 $aSpermatozoa
650 $aBovino
650 $aCaprino
650 $aHeparina
650 $aOvino
650 $aReprodução animal
650 $aSêmen
653 $aCapacitação espermática
700 1 $aSOUZA-FABJAN, J. M. G.
700 1 $aFONSECA, J. F. da
700 1 $aBATISTA, R. I. T. P.
700 1 $aBALARO, M. F. A.
700 1 $aSARAIVA, H. F. R. de A.
700 1 $aALFRADIQUE, V. A. P.
700 1 $aCÔRTES, L. R.
700 1 $aBRANDÃO, F. Z.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Biblioteca |
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Origem |
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Classificação |
Cutter |
Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Trigo. |
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Data corrente: |
03/01/2018 |
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Data da última atualização: |
09/08/2022 |
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Tipo da produção científica: |
Nota Técnica/Nota Científica |
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Circulação/Nível: |
A - 1 |
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Autoria: |
LIMA, J. O.; PEREIRA, J. F.; ARAÚJO, R. F. de; QUEIROZ, M. V. de. |
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Afiliação: |
JULIANA OLIVEIRA LIMA, UNIVERSIDADE FEDERAL DE VIÇOSA; JORGE FERNANDO PEREIRA, CNPGL; ELZA FERNANDES DE ARAÚJO, UNIVERSIDADE FEDERAL DE VIÇOSA; MARISA VIEIRA DE QUEIROZ, UNIVERSIDADE FEDERAL DE VIÇOSA. |
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Título: |
Pectin lyase overproduction by Penicillium griseoroseum mutants resistant to catabolite repression. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Brazilian Journal of Microbiology, São Paulo, v. 48, n. 3, p. 602-606, 2017. |
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DOI: |
https://doi.org/10.1016/j.bjm.2016.12.009 |
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Idioma: |
Inglês |
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Conteúdo: |
Expression of pectinolytic genes is regulated by catabolic repression limiting the productionof pectin lyase (PL) if the natural inducer, pectin, is missing from the growth medium. Here,we report the isolation of Penicillium griseoroseum mutants resistant to 2-deoxy-d-glucose(DG) that show resistance to catabolite repression and overproduce PL. Three spontaneousand nine UV-induced mutants were obtained. Some mutants produced sectors (segmentsmorphologically different) that were also studied. The mutants were analyzed for pectinasesproduction on pectinase-agar plates and five mutants and two sectors showing larger clear-ing zones than the wild type were selected for quantitative assay. Although PL productionhigher than the wild type has been found, phenotype instability was observed for most ofthe mutants and, after transfers to nonselective medium, the DG resistance was no longerpresent. Only mutants M03 and M04 were stable maintaining the DG-resistance phenotype.When growing for 120 h in liquid medium containing glucose with or without pectin, bothmutants showed higher PL production. In the presence of glucose as sole carbon source, themutant M03 produced 7.8-fold more PL than the wild type. Due its phenotypic stability andPL overproduction, the mutant M03 presents potential for industrial applications. |
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Palavras-Chave: |
Pectinolytic complex; Spontaneous mutant; Ultraviolet mutagenesis. |
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Thesagro: |
Microbiologia; Mutação. |
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Thesaurus NAL: |
Microbiology; Mutation. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1084275/1/Pectin-lyase-overproduction-by-Penicillium-griseoroseum-mutants.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/170232/1/ID44256-2017v48n4p602BrazJMicrobiol.pdf
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Marc: |
LEADER 02130naa a2200253 a 4500
001 2084275
005 2022-08-09
008 2017 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.bjm.2016.12.009$2DOI
100 1 $aLIMA, J. O.
245 $aPectin lyase overproduction by Penicillium griseoroseum mutants resistant to catabolite repression.$h[electronic resource]
260 $c2017
520 $aExpression of pectinolytic genes is regulated by catabolic repression limiting the productionof pectin lyase (PL) if the natural inducer, pectin, is missing from the growth medium. Here,we report the isolation of Penicillium griseoroseum mutants resistant to 2-deoxy-d-glucose(DG) that show resistance to catabolite repression and overproduce PL. Three spontaneousand nine UV-induced mutants were obtained. Some mutants produced sectors (segmentsmorphologically different) that were also studied. The mutants were analyzed for pectinasesproduction on pectinase-agar plates and five mutants and two sectors showing larger clear-ing zones than the wild type were selected for quantitative assay. Although PL productionhigher than the wild type has been found, phenotype instability was observed for most ofthe mutants and, after transfers to nonselective medium, the DG resistance was no longerpresent. Only mutants M03 and M04 were stable maintaining the DG-resistance phenotype.When growing for 120 h in liquid medium containing glucose with or without pectin, bothmutants showed higher PL production. In the presence of glucose as sole carbon source, themutant M03 produced 7.8-fold more PL than the wild type. Due its phenotypic stability andPL overproduction, the mutant M03 presents potential for industrial applications.
650 $aMicrobiology
650 $aMutation
650 $aMicrobiologia
650 $aMutação
653 $aPectinolytic complex
653 $aSpontaneous mutant
653 $aUltraviolet mutagenesis
700 1 $aPEREIRA, J. F.
700 1 $aARAÚJO, R. F. de
700 1 $aQUEIROZ, M. V. de
773 $tBrazilian Journal of Microbiology, São Paulo$gv. 48, n. 3, p. 602-606, 2017.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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