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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
10/02/2017 |
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Data da última atualização: |
30/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PAULA, C. M. P. de; SOUZA SOBRINHO, F. de; TECHIO, V. H. |
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Afiliação: |
Cristina M. P. de Paula, UFLA; FAUSTO DE SOUZA SOBRINHO, CNPGL; Vania H. Techio, UFLA. |
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Título: |
Chromosomal distribution of H3K4me2, H3K9me2 and 5-methylcytosine: variations associated with polyploidy and hybridization in Brachiaria (Poaceae). |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Plant Cell Reports, v. 35, n. 6, p. 1359-1369, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract Histone post-translational modifications and DNA methylation are epigenetic processes that are involved in structural and functional organization of the genome. This study compared the chromosomal distribution of modified histones and 5-methylcytosine (5-mCyt) in species and interspecific hybrids of Brachiaria with different ploidy levels and reproduction modes. The relation between H3K9me2 and 5-mCyt was observed in the nucleolus organizer region, centromeric central domain and pericentromeric region. H3K4me2 was detected in euchromatic domains, mainly in the terminal chromosomal regions. Comparison of chromosomal distribution among species and hybrids showed greater variation of chromosomal types for the H3K9me2 in B. decumbens (tetraploid and apomictic species) and the 963 hybrid, while, for the H3K4me2, the variation was higher in B. brizantha and B. decumbens (tetraploid and apomictic species) and 963 hybrid. The chromosome distribution of 5-mCyt was similar between B. brizantha and B. decumbens, which differ from the distribution observed in B. ruziziensis (diploid and sexual species). Significant alterations in DNA methylation were observed in the artificially tetraploidized B. ruziziensis and in the interspecific hybrids, possibly as result of hybridization and polyploidization processes. The monitoring of histone modifications and DNA methylation allowed categorizing nuclear and chromosomal distribution of these epigenetic marks, thus contributing to the knowledge of composition and structure of the genome/epigenome of Brachiaria species and hybrids. These data can be useful for speciation and genome evolution studies in genus Brachiaria, and represent important markers to explore relationships between genomes. MenosAbstract Histone post-translational modifications and DNA methylation are epigenetic processes that are involved in structural and functional organization of the genome. This study compared the chromosomal distribution of modified histones and 5-methylcytosine (5-mCyt) in species and interspecific hybrids of Brachiaria with different ploidy levels and reproduction modes. The relation between H3K9me2 and 5-mCyt was observed in the nucleolus organizer region, centromeric central domain and pericentromeric region. H3K4me2 was detected in euchromatic domains, mainly in the terminal chromosomal regions. Comparison of chromosomal distribution among species and hybrids showed greater variation of chromosomal types for the H3K9me2 in B. decumbens (tetraploid and apomictic species) and the 963 hybrid, while, for the H3K4me2, the variation was higher in B. brizantha and B. decumbens (tetraploid and apomictic species) and 963 hybrid. The chromosome distribution of 5-mCyt was similar between B. brizantha and B. decumbens, which differ from the distribution observed in B. ruziziensis (diploid and sexual species). Significant alterations in DNA methylation were observed in the artificially tetraploidized B. ruziziensis and in the interspecific hybrids, possibly as result of hybridization and polyploidization processes. The monitoring of histone modifications and DNA methylation allowed categorizing nuclear and chromosomal distribution of these epigenetic marks, thus contributing to the kn... Mostrar Tudo |
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Palavras-Chave: |
Epigenetics marks; Histone methylation; Interspecific hybrids. |
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Thesaurus Nal: |
DNA methylation; Urochloa. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02442naa a2200205 a 4500
001 2063496
005 2023-01-30
008 2016 bl uuuu u00u1 u #d
100 1 $aPAULA, C. M. P. de
245 $aChromosomal distribution of H3K4me2, H3K9me2 and 5-methylcytosine$bvariations associated with polyploidy and hybridization in Brachiaria (Poaceae).$h[electronic resource]
260 $c2016
520 $aAbstract Histone post-translational modifications and DNA methylation are epigenetic processes that are involved in structural and functional organization of the genome. This study compared the chromosomal distribution of modified histones and 5-methylcytosine (5-mCyt) in species and interspecific hybrids of Brachiaria with different ploidy levels and reproduction modes. The relation between H3K9me2 and 5-mCyt was observed in the nucleolus organizer region, centromeric central domain and pericentromeric region. H3K4me2 was detected in euchromatic domains, mainly in the terminal chromosomal regions. Comparison of chromosomal distribution among species and hybrids showed greater variation of chromosomal types for the H3K9me2 in B. decumbens (tetraploid and apomictic species) and the 963 hybrid, while, for the H3K4me2, the variation was higher in B. brizantha and B. decumbens (tetraploid and apomictic species) and 963 hybrid. The chromosome distribution of 5-mCyt was similar between B. brizantha and B. decumbens, which differ from the distribution observed in B. ruziziensis (diploid and sexual species). Significant alterations in DNA methylation were observed in the artificially tetraploidized B. ruziziensis and in the interspecific hybrids, possibly as result of hybridization and polyploidization processes. The monitoring of histone modifications and DNA methylation allowed categorizing nuclear and chromosomal distribution of these epigenetic marks, thus contributing to the knowledge of composition and structure of the genome/epigenome of Brachiaria species and hybrids. These data can be useful for speciation and genome evolution studies in genus Brachiaria, and represent important markers to explore relationships between genomes.
650 $aDNA methylation
650 $aUrochloa
653 $aEpigenetics marks
653 $aHistone methylation
653 $aInterspecific hybrids
700 1 $aSOUZA SOBRINHO, F. de
700 1 $aTECHIO, V. H.
773 $tPlant Cell Reports$gv. 35, n. 6, p. 1359-1369, 2016.
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| 1. |  | PEREIRA, T.; ALVAREZ, J. M.; SSANTOS, S. A.; AGUUILAR, M. R.; DESBIEZ, A.; GARCIA, J. B. Morfometria dos estômatos de quatro espécies de gramíneas temperadas no Pantanal. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PANTANAL, 1.; SEMANA DE BIOLOGIA, 7., 2007, Corumbá. Resumos...Corumbá: Embrapa Pantanal, 2007. (Embrapa Pantanal. Documentos, 89). 1 p.| Tipo: Resumo em Anais de Congresso |
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