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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Corte. |
Data corrente: |
20/10/2009 |
Data da última atualização: |
29/01/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
GRISOLIA, A. B.; D´ANGELO, G. T.; PORTO NETO, L. R.; SIQUEIRA, F.; GARCIA, J. F. |
Afiliação: |
A. B. GRISOLIA, UNIVERSIDADE ESTADUAL PAULISTA/ UFGD; G. T. D´ANGELO, UNIVERSIDADE ESTADUAL PAULISTA; L. R. PORTO NETO, UNIVERSIDADE ESTADUAL PAULISTA; FABIANE SIQUEIRA, CNPGC; J. F. GARCIA, UNIVERSIDADE ESTADUAL PAULISTA. |
Título: |
Myostatin (GDF8) single nucleotide polymorphisms in Nellore cattle. |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
Genetics and Molecular Research, Ribeirão Preto, v. 8, n. 3, p. 822-830, 2009. |
Idioma: |
Inglês |
Conteúdo: |
The myostatin gene, also known as GDF8 (growth differentiation factor 8), is located on bovine chromosome 2 (BTA2); it has three exons and two introns. Myostatin is specifically expressed during embryonic development and in adult skeletal muscle, functioning as a negative regulatory protein. Several cattle breeds (Piedmontese, Belgian Blue and Blond?Aquitaine, and others) show polymorphisms in this gene; these polymorphisms are directly related to the double muscling phenotype. We looked for polymorphisms in the Nellore cattle myostatin gene and compared them with those known for taurine breeds. Seven regions, covering the three exons of this gene, were amplified by polymerase chain reaction and sequenced, including the untranslated region. DNA from 30 adult Nellore animals was collected; DNA sequencing revealed three, seven and four polymorphisms in exons 1, 2 and 3, respectively. We found previously reported polymorphisms, as well as several new ones; for instance, 37 polymorphisms were found in the untranslated region segment, and in introns 1 and 2 there were one and three polymorphisms, respectively. The high degree of allelic heterogeneity in the myostatin gene could be related to its high mutation rate; it also could be the result of a long history of artificial selection for meat production, which has probably favored such modifications and maintained them in cattle populations. These polymorphisms identified in Nellore cattle could be useful for breeding programs. |
Palavras-Chave: |
Bovino de Corte; DNA sequencing; Nelore. |
Thesagro: |
Carne; DNA; Melhoramento genético animal. |
Thesaurus Nal: |
Animal breeding; Double muscling; Nucleotides. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/171774/1/Myostatin-GDF8-single-nucleotide.pdf
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Marc: |
LEADER 02284naa a2200277 a 4500 001 1572633 005 2018-01-29 008 2009 bl uuuu u00u1 u #d 100 1 $aGRISOLIA, A. B. 245 $aMyostatin (GDF8) single nucleotide polymorphisms in Nellore cattle.$h[electronic resource] 260 $c2009 520 $aThe myostatin gene, also known as GDF8 (growth differentiation factor 8), is located on bovine chromosome 2 (BTA2); it has three exons and two introns. Myostatin is specifically expressed during embryonic development and in adult skeletal muscle, functioning as a negative regulatory protein. Several cattle breeds (Piedmontese, Belgian Blue and Blond?Aquitaine, and others) show polymorphisms in this gene; these polymorphisms are directly related to the double muscling phenotype. We looked for polymorphisms in the Nellore cattle myostatin gene and compared them with those known for taurine breeds. Seven regions, covering the three exons of this gene, were amplified by polymerase chain reaction and sequenced, including the untranslated region. DNA from 30 adult Nellore animals was collected; DNA sequencing revealed three, seven and four polymorphisms in exons 1, 2 and 3, respectively. We found previously reported polymorphisms, as well as several new ones; for instance, 37 polymorphisms were found in the untranslated region segment, and in introns 1 and 2 there were one and three polymorphisms, respectively. The high degree of allelic heterogeneity in the myostatin gene could be related to its high mutation rate; it also could be the result of a long history of artificial selection for meat production, which has probably favored such modifications and maintained them in cattle populations. These polymorphisms identified in Nellore cattle could be useful for breeding programs. 650 $aAnimal breeding 650 $aDouble muscling 650 $aNucleotides 650 $aCarne 650 $aDNA 650 $aMelhoramento genético animal 653 $aBovino de Corte 653 $aDNA sequencing 653 $aNelore 700 1 $aD´ANGELO, G. T. 700 1 $aPORTO NETO, L. R. 700 1 $aSIQUEIRA, F. 700 1 $aGARCIA, J. F. 773 $tGenetics and Molecular Research, Ribeirão Preto$gv. 8, n. 3, p. 822-830, 2009.
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Embrapa Gado de Corte (CNPGC) |
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Registro Completo
Biblioteca(s): |
Embrapa Pantanal. |
Data corrente: |
27/09/2019 |
Data da última atualização: |
18/11/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
Lo, E. L.; McGLUE, M. M.; SILVA, A.; BERGIER, I.; YEAGER, K. M.; MACEDO, H. DE.; SWALLOMA, M.; ASSINE, M. L. |
Afiliação: |
Edward L. Lo, University of Kentucky; Michael M. McGlue, University of Kentucky; AGUINALDO SILVA, UFMS; IVAN BERGIER TAVARES DE LIMA, CPAP; KEVIN M. YEAGER, University of Kentucky; HUDSON DE AZEVEDO MACEDO, UEM; MAREDITH SWALLOMA, University of Kentucky; MARIO L. ASSINE, UNESP. |
Título: |
Fluvio-lacustrine sedimentary processes and landforms on the distal Paraguay fluvial megafan (Brazil). |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Geomorphology, v. 342, p. 163-175, 2019. |
DOI: |
10.1016/j.geomorph.2019.06.001 |
Idioma: |
Inglês |
Conteúdo: |
Tropical fluvio-lacustrine depositional processes along the toe of the Paraguay fluvialmegafanwere investigated with a focus on Lake Uberaba (LU), the largest lake in the Pantanalwetlands. A limnogeological analysis of LUwas conducted using remote sensing imagery, lake water chemistry, sedimentological and radiochemical data from lake floor samples and short cores. Echo-sounding revealed that LU is deepest (Zmax = ~3.5 m) near its southern shoreline and outlet; the lake is hydrologically open throughout the year and is characterized by a dilute Ca+2-Na+-HCO3 − chemistry. Key environmental controls on sedimentation in LU include inflowing transverse and axial rivers and water level changes, which influence the composition, mixing, accumulation, and the organization of facies. Structureless brown sandy silts with relatively low organic carbon (TOCmean = ~1.7 wt %) and low to moderate biogenic silica (BiSimean = ~1.9 wt%) comprise most offshore lake floor sediments, whereas northern lake margin sediments consist of peaty silts and sandy silts whose origins are linked to inflowing Paraguay megafan distributary channels. Sediment core stratigraphy revealed that extant lacustrine deposits are underlain by oxidized clayey silts and sands, suggesting recent subaerial exposure of the basin floor. Sedimentary datasets conclusively suggest that LU is a shallow overfilled lake basin that is strongly influenced as a depositional system by its persistently open hydrology, shoreline channel density, and absence of margin coincident topography. This study provides newinsights on lacustrine landformdevelopment in distal megafan settings, which is important for improving our understanding of fluvial landscapes. MenosTropical fluvio-lacustrine depositional processes along the toe of the Paraguay fluvialmegafanwere investigated with a focus on Lake Uberaba (LU), the largest lake in the Pantanalwetlands. A limnogeological analysis of LUwas conducted using remote sensing imagery, lake water chemistry, sedimentological and radiochemical data from lake floor samples and short cores. Echo-sounding revealed that LU is deepest (Zmax = ~3.5 m) near its southern shoreline and outlet; the lake is hydrologically open throughout the year and is characterized by a dilute Ca+2-Na+-HCO3 − chemistry. Key environmental controls on sedimentation in LU include inflowing transverse and axial rivers and water level changes, which influence the composition, mixing, accumulation, and the organization of facies. Structureless brown sandy silts with relatively low organic carbon (TOCmean = ~1.7 wt %) and low to moderate biogenic silica (BiSimean = ~1.9 wt%) comprise most offshore lake floor sediments, whereas northern lake margin sediments consist of peaty silts and sandy silts whose origins are linked to inflowing Paraguay megafan distributary channels. Sediment core stratigraphy revealed that extant lacustrine deposits are underlain by oxidized clayey silts and sands, suggesting recent subaerial exposure of the basin floor. Sedimentary datasets conclusively suggest that LU is a shallow overfilled lake basin that is strongly influenced as a depositional system by its persistently open hydrology, shoreline ... Mostrar Tudo |
Palavras-Chave: |
Distributive fluvial system. |
Thesagro: |
Lago; Sedimento. |
Thesaurus NAL: |
Fluvial soils; Lakes; Wetlands. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02537naa a2200289 a 4500 001 2112531 005 2019-11-18 008 2019 bl uuuu u00u1 u #d 024 7 $a10.1016/j.geomorph.2019.06.001$2DOI 100 1 $aLo, E. L. 245 $aFluvio-lacustrine sedimentary processes and landforms on the distal Paraguay fluvial megafan (Brazil).$h[electronic resource] 260 $c2019 520 $aTropical fluvio-lacustrine depositional processes along the toe of the Paraguay fluvialmegafanwere investigated with a focus on Lake Uberaba (LU), the largest lake in the Pantanalwetlands. A limnogeological analysis of LUwas conducted using remote sensing imagery, lake water chemistry, sedimentological and radiochemical data from lake floor samples and short cores. Echo-sounding revealed that LU is deepest (Zmax = ~3.5 m) near its southern shoreline and outlet; the lake is hydrologically open throughout the year and is characterized by a dilute Ca+2-Na+-HCO3 − chemistry. Key environmental controls on sedimentation in LU include inflowing transverse and axial rivers and water level changes, which influence the composition, mixing, accumulation, and the organization of facies. Structureless brown sandy silts with relatively low organic carbon (TOCmean = ~1.7 wt %) and low to moderate biogenic silica (BiSimean = ~1.9 wt%) comprise most offshore lake floor sediments, whereas northern lake margin sediments consist of peaty silts and sandy silts whose origins are linked to inflowing Paraguay megafan distributary channels. Sediment core stratigraphy revealed that extant lacustrine deposits are underlain by oxidized clayey silts and sands, suggesting recent subaerial exposure of the basin floor. Sedimentary datasets conclusively suggest that LU is a shallow overfilled lake basin that is strongly influenced as a depositional system by its persistently open hydrology, shoreline channel density, and absence of margin coincident topography. This study provides newinsights on lacustrine landformdevelopment in distal megafan settings, which is important for improving our understanding of fluvial landscapes. 650 $aFluvial soils 650 $aLakes 650 $aWetlands 650 $aLago 650 $aSedimento 653 $aDistributive fluvial system 700 1 $aMcGLUE, M. M. 700 1 $aSILVA, A. 700 1 $aBERGIER, I. 700 1 $aYEAGER, K. M. 700 1 $aMACEDO, H. DE. 700 1 $aSWALLOMA, M. 700 1 $aASSINE, M. L. 773 $tGeomorphology$gv. 342, p. 163-175, 2019.
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