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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
20/01/2017 |
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Data da última atualização: |
25/01/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VASCONCELOS, L. M.; BRITO, A. C.; CARMO, C. D.; OLIVEIRA, E. J. de. |
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Afiliação: |
L. M. VASCONCELOS, UFRB; A. C. BRITO; C. D. CARMO, UFRB; EDER JORGE DE OLIVEIRA, CNPMF. |
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Título: |
Polymorphism of starch pathway genes in cassava. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 15, n.4,[2016?]. |
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Idioma: |
Inglês |
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Conteúdo: |
The distribution and frequency of single nucleotide polymorphisms (SNPs) can help to understand changes associated with characteristics of interest. We aimed to evaluate nucleotide diversity in six genes involved in starch biosynthesis in cassava using a panel of 96 unrelated accessions. The genes were sequenced, aligned, and used to obtain values for nucleotide diversity (?), segregating sites (?), Tajima?s D test, and neighbor-joining (NJ) clustering. On average, one SNP per 147 and 171 bp was identified in exon and intron regions, respectively. Thirteen heterozygous loci were found. Three of seven SNPs in the exon region resulted in non-synonymous replacement or four synonymous substitutions. However, no associations were noted between SNPs and root dry-matter content. The parameter ? ranged from 0.0001 (granule bound starch synthase I) to 0.0033 (?-amylase), averaging 0.0011, while ? ranged from 0.00014 (starch branching enzyme) to 0.00584 (starch synthase I), averaging 0.002353. The diversity value was typically double that of the ?. Results of the D test did not suggest any evidence of deviance of neutrality in these genes. Among the evaluated accession, 82/96 were clustered using the NJ method but without a clear separation of the root dry-matter content, root pulp coloration, and classification of the cyanogenic compound content. High variation in genes of the starch biosynthetic pathway can be used to identify associations with the functional properties of starch for the use of polymorphisms for selection purposes. MenosThe distribution and frequency of single nucleotide polymorphisms (SNPs) can help to understand changes associated with characteristics of interest. We aimed to evaluate nucleotide diversity in six genes involved in starch biosynthesis in cassava using a panel of 96 unrelated accessions. The genes were sequenced, aligned, and used to obtain values for nucleotide diversity (?), segregating sites (?), Tajima?s D test, and neighbor-joining (NJ) clustering. On average, one SNP per 147 and 171 bp was identified in exon and intron regions, respectively. Thirteen heterozygous loci were found. Three of seven SNPs in the exon region resulted in non-synonymous replacement or four synonymous substitutions. However, no associations were noted between SNPs and root dry-matter content. The parameter ? ranged from 0.0001 (granule bound starch synthase I) to 0.0033 (?-amylase), averaging 0.0011, while ? ranged from 0.00014 (starch branching enzyme) to 0.00584 (starch synthase I), averaging 0.002353. The diversity value was typically double that of the ?. Results of the D test did not suggest any evidence of deviance of neutrality in these genes. Among the evaluated accession, 82/96 were clustered using the NJ method but without a clear separation of the root dry-matter content, root pulp coloration, and classification of the cyanogenic compound content. High variation in genes of the starch biosynthetic pathway can be used to identify associations with the functional properties of starch fo... Mostrar Tudo |
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Thesagro: |
Mandioca. |
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Thesaurus Nal: |
Cassava. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02043naa a2200181 a 4500
001 2061438
005 2017-01-25
008 2016 bl uuuu u00u1 u #d
100 1 $aVASCONCELOS, L. M.
245 $aPolymorphism of starch pathway genes in cassava.$h[electronic resource]
260 $c2016
520 $aThe distribution and frequency of single nucleotide polymorphisms (SNPs) can help to understand changes associated with characteristics of interest. We aimed to evaluate nucleotide diversity in six genes involved in starch biosynthesis in cassava using a panel of 96 unrelated accessions. The genes were sequenced, aligned, and used to obtain values for nucleotide diversity (?), segregating sites (?), Tajima?s D test, and neighbor-joining (NJ) clustering. On average, one SNP per 147 and 171 bp was identified in exon and intron regions, respectively. Thirteen heterozygous loci were found. Three of seven SNPs in the exon region resulted in non-synonymous replacement or four synonymous substitutions. However, no associations were noted between SNPs and root dry-matter content. The parameter ? ranged from 0.0001 (granule bound starch synthase I) to 0.0033 (?-amylase), averaging 0.0011, while ? ranged from 0.00014 (starch branching enzyme) to 0.00584 (starch synthase I), averaging 0.002353. The diversity value was typically double that of the ?. Results of the D test did not suggest any evidence of deviance of neutrality in these genes. Among the evaluated accession, 82/96 were clustered using the NJ method but without a clear separation of the root dry-matter content, root pulp coloration, and classification of the cyanogenic compound content. High variation in genes of the starch biosynthetic pathway can be used to identify associations with the functional properties of starch for the use of polymorphisms for selection purposes.
650 $aCassava
650 $aMandioca
700 1 $aBRITO, A. C.
700 1 $aCARMO, C. D.
700 1 $aOLIVEIRA, E. J. de
773 $tGenetics and Molecular Research$gv. 15, n.4,[2016?].
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
18/10/1994 |
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Data da última atualização: |
16/01/2014 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
SILVA, V. V. da; RAMOS, G. M. |
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Afiliação: |
VALDERI VIEIRA DA SILVA, EMBRAPA-UEPAE de Teresina; GONÇALO MOREIRA RAMOS, EMBRAPA-UEPAE de Teresina. |
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Título: |
Importância e distribuição espacial da pecuária bovina no Piauí. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Teresina: EMBRAPA-UEPAE de Teresina, 1987. |
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Páginas: |
19p. |
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Série: |
(EMBRAPA-UEPAE de Teresina. Documentos, 7). |
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Idioma: |
Português |
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Conteúdo: |
O Piauí foi o último Estado do Nordeste a ser colonizado. O processo de colonização e povoamento se deu do interior para o litoral, através da expansão da pecuária. Dessa forma, o trabalho aqui apresentados analisa os aspectos históricos, desenvolvimento, evolução e distribuição espacial da pecuária bovina no Piauí. A expectativa de que os subsídios reunidos neste documento contribuam para orientar as instituições que atua nesse subsetor da economia, inclusive a pesquisa agropecuária, e para o estabelecimento de políticas governamentais ajustadas as reais necessidades da pecuária bovina nas diversas Microrregiões Homogêneas (MRH) do Estado. |
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Palavras-Chave: |
Agropecuaria; Bovine; Bovinos; Brasil; Distribuicao; Distribuicao espacial; Economic importance; Espacial distribution; Importancia economica; Piaui. |
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Thesagro: |
Bovino; Pesquisa. |
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Thesaurus NAL: |
Brazil. |
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Categoria do assunto: |
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L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/95392/1/DOC70001.pdf
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Marc: |
LEADER 01466nam a2200301 a 4500
001 1054308
005 2014-01-16
008 1987 bl uuuu u0uu1 u #d
100 1 $aSILVA, V. V. da
245 $aImportância e distribuição espacial da pecuária bovina no Piauí.
260 $aTeresina: EMBRAPA-UEPAE de Teresina$c1987
300 $a19p.
490 $a(EMBRAPA-UEPAE de Teresina. Documentos, 7).
520 $aO Piauí foi o último Estado do Nordeste a ser colonizado. O processo de colonização e povoamento se deu do interior para o litoral, através da expansão da pecuária. Dessa forma, o trabalho aqui apresentados analisa os aspectos históricos, desenvolvimento, evolução e distribuição espacial da pecuária bovina no Piauí. A expectativa de que os subsídios reunidos neste documento contribuam para orientar as instituições que atua nesse subsetor da economia, inclusive a pesquisa agropecuária, e para o estabelecimento de políticas governamentais ajustadas as reais necessidades da pecuária bovina nas diversas Microrregiões Homogêneas (MRH) do Estado.
650 $aBrazil
650 $aBovino
650 $aPesquisa
653 $aAgropecuaria
653 $aBovine
653 $aBovinos
653 $aBrasil
653 $aDistribuicao
653 $aDistribuicao espacial
653 $aEconomic importance
653 $aEspacial distribution
653 $aImportancia economica
653 $aPiaui
700 1 $aRAMOS, G. M.
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