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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
26/05/2003 |
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Data da última atualização: |
26/05/2003 |
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Autoria: |
VANZELA, A. L. L.; RUAS, C. F.; OLIVEIRA, M. F.; RUAS, P. M. |
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Título: |
Characterization of diploid, tetraploid and hexaploid Helianthus species by chromosome banding and FISH with 45S rDNA probe. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Genetica, The Hague, v. 114, n. 2, p. 105-111, 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
Comparative karyotype analyses of five diploid, two tetraploid, and three hexaploid species of Helianthus were performed using Feulgen staining, Giemsa C and CMA3 (C-CMA) staining, and FISH with 45S rDNA probe. The karyotypes are composed by a basic number of x=17 with a predominance of meta- and submetacentric chromosome types. A polyploid series is associated with the basic number. Giemsa C- and C-CMA banding revealed terminal or interstitial heterochromatin according to the species, suggesting the existence of a mechanism that may be acting in the dispersion of heterochromatic segments in Helianthus. The nucleolar organizer regions were located at terminal chromosome positions by FISH with 45S rDNA probe. Diploid species presented four, six, and eight rDNA sites, tetraploid species showed eight sites and hexaploid species presented 12 rDNA sites. Karyomorphological differences include variation in number, size and chromosome morphology, suggesting that rearrangements!
involving small heterochromatic and rDNA segments played a major role in karyotype evolution. |
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Categoria do assunto: |
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Marc: |
LEADER 01572naa a2200157 a 4500
001 1453404
005 2003-05-26
008 2002 bl --- 0-- u #d
100 1 $aVANZELA, A. L. L.
245 $aCharacterization of diploid, tetraploid and hexaploid Helianthus species by chromosome banding and FISH with 45S rDNA probe.
260 $c2002
520 $aComparative karyotype analyses of five diploid, two tetraploid, and three hexaploid species of Helianthus were performed using Feulgen staining, Giemsa C and CMA3 (C-CMA) staining, and FISH with 45S rDNA probe. The karyotypes are composed by a basic number of x=17 with a predominance of meta- and submetacentric chromosome types. A polyploid series is associated with the basic number. Giemsa C- and C-CMA banding revealed terminal or interstitial heterochromatin according to the species, suggesting the existence of a mechanism that may be acting in the dispersion of heterochromatic segments in Helianthus. The nucleolar organizer regions were located at terminal chromosome positions by FISH with 45S rDNA probe. Diploid species presented four, six, and eight rDNA sites, tetraploid species showed eight sites and hexaploid species presented 12 rDNA sites. Karyomorphological differences include variation in number, size and chromosome morphology, suggesting that rearrangements! involving small heterochromatic and rDNA segments played a major role in karyotype evolution.
700 1 $aRUAS, C. F.
700 1 $aOLIVEIRA, M. F.
700 1 $aRUAS, P. M.
773 $tGenetica, The Hague$gv. 114, n. 2, p. 105-111, 2002.
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Registro original: |
Embrapa Soja (CNPSO) |
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| Registros recuperados : 7 | |
| 1. |  | VANZELA, A. L. L.; RUAS, C. F.; OLIVEIRA, M. F.; RUAS, P. M. Characterization of diploid, tetraploid and hexaploid Helianthus species by chromosome banding and FISH with 45S rDNA probe. Genetica, The Hague, v. 114, n. 2, p. 105-111, 2002.| Biblioteca(s): Embrapa Soja. |
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| 4. | | CINTRA, L. A.; SOUZA, T. B. de; PARTEKA, L. M.; BARRETO, L. M.; PEREIRA, L. F. P.; GAETA, M. L.; GUYOT, R.; VANZELA, A. L. L. An 82 bp tandem repeat family typical of 3' non-coding end of Gypsy/TAT LTR retrotransposons is conserved in Coffea spp. pericentromeres. Genome, v.65, n. 3, p. 137-181, 2021. Date of Electronic Publication: 2021 Nov 02.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Café. |
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| 5. | | SILVA, C. R. M. da; LOPES, F. R.; CARARETO, C. M. A.; VANZELA, A. L. L.; DOMINGUES, D. S.; PEREIRA, L. F. P. Distribuição de elementos transponíveis em cromossomos de coffea arabica In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 7., 2011, Araxá. Anais... Brasília, DF: Embrapa Café, 2011.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
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| 6. | | BABA, V. Y.; POWEL, A. F.; PEREIRA, L. F. P.; VANZELA, A. L. L.; GIACOMIN, R. M.; STRICKLER, S. R.; MUELLER, L. A.; RODRIGUES, R.; GONÇALVES, L. S. A. Capsidiol-related genes are highly expressed in response to Colletotrichum scovillei during Capsicum annuum fruit development stages. Scientific Reports, v. 10, 12048, 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Café. |
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| 7. | | LOPES, F. R.; JJINGO, D.; SILVA C. R. M. da; ANDRADE, A. C.; MARRACCINI, P.; TEIXEIRA, J. B.; CARAZZOLLE, M. F.; PEREIRA, G. A. G.; PEREIRA, L. F. P.; VANZELA, A. L. L.; WANG, L.; JORDAN, I. K.; CARARETO, C. M. A. Transcriptional activity, chromosomal distribution and expression effects of transposable elements in Coffea genomes. Plos One, v, 8, n. 11, e78931, 2013.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| Registros recuperados : 7 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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