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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
16/12/2019 |
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Data da última atualização: |
06/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CHIAVEGATTO, R. B.; CHAVES, A. L. A.; ROCHA, L. C.; BENITES, F. R. G.; PERUZZI, L.; TECHIO, V. H. |
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Afiliação: |
RAQUEL BEZERRA CHIAVEGATTO, UFLA; Ana Luisa Arantes Chaves, UFLA; Laiane Corsini Rocha, UFLA; FLAVIO RODRIGO GANDOLFI BENITES, CNPGL; Lorenzo Peruzzi, Pisa University, Pisa, Italy; Vânia Helena Techio, UFLA. |
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Título: |
Heterochromatin Bands and rDNA Sites Evolution in Polyploidization Events in Cynodon Rich. (Poaceae). |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Plant Molecular Biology Reporter, v. 37, n. 5-6, p. 477-487, 2019. |
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DOI: |
https://doi.org/10.1007/s11105-019-01173-2 |
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Idioma: |
Inglês |
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Conteúdo: |
Cynodon is a genus with a wide distribution in tropical and subtropical areas. Ploidy levels in Cynodon range from diploid to hexaploid; hence, polyploidy is the most important driver of chromosome numbervariation in this genus. After polyploidization, structural rearrangements such as deletions, insertion, or duplications of DNA sequences frequently occur, allowingvariation of chromosome morphology, size, and number. These events might result in a wide diversity of karyotypes, contributing to reproductive isolation, and consequently to speciation. In this study, we investigate the karyotype variation of Cynodon based on comparative cytogenetic analyses. We conducted chromosome counts, DNA quantification, CMA/DAPI double staining, and FISH mapping of 5S and 35S rDNA sites. Cytomolecular data were analyzed in a phylogenetic framework, in order to trace the evolutionary history of the karyotype variation considering polyploidy events in this group. Our results indicate that the most recent common ancestor of Cynodon had two 35S and 5S rDNA sites,two CMA bands,nine DAPI+ bands on the long arm, five DAPI+ bands on the short arm, and three DAPI+ bands in the pericentromeric region. During polyploidization events, therewere losses and gains of heterochromatic sequences mainly on the short arms and centromeric regions. |
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Palavras-Chave: |
Chromossome evolution; Forage grass; Karyotype variation; Ploidy level. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02102naa a2200241 a 4500
001 2116967
005 2024-02-06
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s11105-019-01173-2$2DOI
100 1 $aCHIAVEGATTO, R. B.
245 $aHeterochromatin Bands and rDNA Sites Evolution in Polyploidization Events in Cynodon Rich. (Poaceae).$h[electronic resource]
260 $c2019
520 $aCynodon is a genus with a wide distribution in tropical and subtropical areas. Ploidy levels in Cynodon range from diploid to hexaploid; hence, polyploidy is the most important driver of chromosome numbervariation in this genus. After polyploidization, structural rearrangements such as deletions, insertion, or duplications of DNA sequences frequently occur, allowingvariation of chromosome morphology, size, and number. These events might result in a wide diversity of karyotypes, contributing to reproductive isolation, and consequently to speciation. In this study, we investigate the karyotype variation of Cynodon based on comparative cytogenetic analyses. We conducted chromosome counts, DNA quantification, CMA/DAPI double staining, and FISH mapping of 5S and 35S rDNA sites. Cytomolecular data were analyzed in a phylogenetic framework, in order to trace the evolutionary history of the karyotype variation considering polyploidy events in this group. Our results indicate that the most recent common ancestor of Cynodon had two 35S and 5S rDNA sites,two CMA bands,nine DAPI+ bands on the long arm, five DAPI+ bands on the short arm, and three DAPI+ bands in the pericentromeric region. During polyploidization events, therewere losses and gains of heterochromatic sequences mainly on the short arms and centromeric regions.
653 $aChromossome evolution
653 $aForage grass
653 $aKaryotype variation
653 $aPloidy level
700 1 $aCHAVES, A. L. A.
700 1 $aROCHA, L. C.
700 1 $aBENITES, F. R. G.
700 1 $aPERUZZI, L.
700 1 $aTECHIO, V. H.
773 $tPlant Molecular Biology Reporter$gv. 37, n. 5-6, p. 477-487, 2019.
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| 10. |  | BRIGHENTI, A. M.; SOUZA SOBRINHO, F. de; BENITES, F. R. G.; ROCHA, W. S. D. da. Tolerância diferencial e seletividade de herbicidas em forragerias de gênero Cynodon. In: CONGRESSO NORDESTINO DE PRODUÇÃO ANIMAL, 13., 2018, João Pessoa, PE. Anais... João Pessoa, PE: SNPA, 2018.| Tipo: Artigo em Anais de Congresso |
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| 13. | | SILVA, G.; NEVES, L.; OLIVEIRA, F.; BENITES, F. R. G.; SOUZA SOBRINHO, F. de. Forage yield and the leaf-stem relationship in diploid and tetraploid clones of B. ruziziensis in the end of the dry season. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 53., 2016, Gramado. Zootecnia: otimizando recursos e potencialidades: anais. Brasília, DF: Sociedade Brasileira de Zootecnia, 2016.| Tipo: Resumo em Anais de Congresso |
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