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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
21/09/2018 |
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Data da última atualização: |
03/01/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SEIJO, J. G.; KOVALSKY, E. I.; CHALUP, L. M. I.; SAMOLUK, S. S.; FAVERO, A. P.; ROBLEDO, G. A. |
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Afiliação: |
José Guillermo Seijo, IBONE; Evelin Ivana Kovalsky, IBONE; Laura María Isabel Chalup, IBONE; Sergio Sebastián Samoluk, IBONE; ALESSANDRA PEREIRA FAVERO, CPPSE; Germán Ariel Robledo, IBONE. |
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Título: |
Karyotype Stability and Genome-Specific Nucleolar Dominance in Peanut, Its Wild 4´Ancestor, and a Synthetic AABB Polyploid. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Crop Science, v. 58, p. 1671-1683, 2018. |
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DOI: |
10.2135/cropsci2018.02.0088 |
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Idioma: |
Inglês |
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Conteúdo: |
Allopolyploidy is a significant evolutionary process involved in the origin of many crops, including peanut (Arachis hypogaea L.). The process usually results in a series of chromosome, genomic and epigenetic rearrangements in the derived polyploids. Here, we examined the chromosomal consequences undergone by AABB tetraploids of Arachis after the genome merger. For that objective, different chromosome markers and DNA contents were compared among peanut, its wild tetraploid ancestor, and the diploid genome donors A. duranensis Krapov. & W.C. Gregory (AA, female) and A. ipaënsis Krapov. & W.C. Gregory (BB, male). The analysis also included an artificially synthesized allotetraploid using A. ipaënsis as a female [(A. ipaënsis´ A. duranensis)4´]. The karyotypes in the natural (originated ?10,000 yr ago) and newly synthesized allopolyploids have largely maintained the patterns of heterochromatin and ribosomal RNA loci detected in the diploid progenitors. Intergenomic translocations were not evident using genome in situ hybridization, and the DNA contents of the allotetraploids corresponded to the expected sum of those observed in their parental species. The analysis of ribosomal DNA loci and their association with nucleolar organizing regions revealed a rapid establishment of nucleolar dominance in favor of the A genome. The large macrostructural stability of karyotype observed here after polyploidization has not been frequently cited for polyploid crop plants. This stability is significant for peanut breeding, since it suggests that effective introgression of wild useful alleles into cultivated peanut may potentially occur in most of the extension of the A and B chromosome complements. MenosAllopolyploidy is a significant evolutionary process involved in the origin of many crops, including peanut (Arachis hypogaea L.). The process usually results in a series of chromosome, genomic and epigenetic rearrangements in the derived polyploids. Here, we examined the chromosomal consequences undergone by AABB tetraploids of Arachis after the genome merger. For that objective, different chromosome markers and DNA contents were compared among peanut, its wild tetraploid ancestor, and the diploid genome donors A. duranensis Krapov. & W.C. Gregory (AA, female) and A. ipaënsis Krapov. & W.C. Gregory (BB, male). The analysis also included an artificially synthesized allotetraploid using A. ipaënsis as a female [(A. ipaënsis´ A. duranensis)4´]. The karyotypes in the natural (originated ?10,000 yr ago) and newly synthesized allopolyploids have largely maintained the patterns of heterochromatin and ribosomal RNA loci detected in the diploid progenitors. Intergenomic translocations were not evident using genome in situ hybridization, and the DNA contents of the allotetraploids corresponded to the expected sum of those observed in their parental species. The analysis of ribosomal DNA loci and their association with nucleolar organizing regions revealed a rapid establishment of nucleolar dominance in favor of the A genome. The large macrostructural stability of karyotype observed here after polyploidization has not been frequently cited for polyploid crop plants. This stability is ... Mostrar Tudo |
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Thesagro: |
Amendoim; Cariótipo. |
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Thesaurus Nal: |
Peanuts. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02407naa a2200229 a 4500
001 2096107
005 2019-01-03
008 2018 bl uuuu u00u1 u #d
024 7 $a10.2135/cropsci2018.02.0088$2DOI
100 1 $aSEIJO, J. G.
245 $aKaryotype Stability and Genome-Specific Nucleolar Dominance in Peanut, Its Wild 4´Ancestor, and a Synthetic AABB Polyploid.$h[electronic resource]
260 $c2018
520 $aAllopolyploidy is a significant evolutionary process involved in the origin of many crops, including peanut (Arachis hypogaea L.). The process usually results in a series of chromosome, genomic and epigenetic rearrangements in the derived polyploids. Here, we examined the chromosomal consequences undergone by AABB tetraploids of Arachis after the genome merger. For that objective, different chromosome markers and DNA contents were compared among peanut, its wild tetraploid ancestor, and the diploid genome donors A. duranensis Krapov. & W.C. Gregory (AA, female) and A. ipaënsis Krapov. & W.C. Gregory (BB, male). The analysis also included an artificially synthesized allotetraploid using A. ipaënsis as a female [(A. ipaënsis´ A. duranensis)4´]. The karyotypes in the natural (originated ?10,000 yr ago) and newly synthesized allopolyploids have largely maintained the patterns of heterochromatin and ribosomal RNA loci detected in the diploid progenitors. Intergenomic translocations were not evident using genome in situ hybridization, and the DNA contents of the allotetraploids corresponded to the expected sum of those observed in their parental species. The analysis of ribosomal DNA loci and their association with nucleolar organizing regions revealed a rapid establishment of nucleolar dominance in favor of the A genome. The large macrostructural stability of karyotype observed here after polyploidization has not been frequently cited for polyploid crop plants. This stability is significant for peanut breeding, since it suggests that effective introgression of wild useful alleles into cultivated peanut may potentially occur in most of the extension of the A and B chromosome complements.
650 $aPeanuts
650 $aAmendoim
650 $aCariótipo
700 1 $aKOVALSKY, E. I.
700 1 $aCHALUP, L. M. I.
700 1 $aSAMOLUK, S. S.
700 1 $aFAVERO, A. P.
700 1 $aROBLEDO, G. A.
773 $tCrop Science$gv. 58, p. 1671-1683, 2018.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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| Registros recuperados : 3 | |
| 1. |  | CELESTE, S. M.; ORTIZ, A. M.; ROBLEDO, G. A.; VALLS, J. F. M.; LAVIA, G. I. Genomic characterisation of Arachis porphyrocalyx (Valls & C.E. Simpson, 2005) (Leguminosae): multiple origin of Arachis species with x = 9. Comparative Cytogenetics, v.11, n. 1, p.29-43, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 2. | | ORTIZ, A. M.; ROBLEDO, G.; SEIJO, G.; VALLS, J. F. M.; LAVIA, G. I. Cytogenetic evidences on the evolutionary relationships between the tetraploids of the section Rhizomatosae and related diploid species (Arachis, Leguminosae). Journal of Plant Research, v. 130, n. 5, p 791-807, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 3. | | SEIJO, J. G.; KOVALSKY, E. I.; CHALUP, L. M. I.; SAMOLUK, S. S.; FAVERO, A. P.; ROBLEDO, G. A. Karyotype Stability and Genome-Specific Nucleolar Dominance in Peanut, Its Wild 4´Ancestor, and a Synthetic AABB Polyploid. Crop Science, v. 58, p. 1671-1683, 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| Registros recuperados : 3 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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