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 | Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
07/04/2021 |
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Data da última atualização: |
07/04/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SADER, M.; VAIO, M.; SANTOS, L. A. C.; DORNELAS, M. C.; VIEIRA, M. L. C.; MELO, N. F. de; PEDROSA-HARAND, A. |
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Afiliação: |
MARIELA SADER; MAGDALENA VAIO; LUIZ AUGUSTO CAUZ SANTOS; MARCELO CARNIER DORNELAS; MARIA LUCIA CARNEIRO VIEIRA; NATONIEL FRANKLIN DE MELO, CPATSA; ANDREA PEDROSA-HARAND. |
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Título: |
Large vs small genomes in Passifora: the infuence of the mobilome and the satellitome. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Planta, v. 253, n. 4, 2021. |
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DOI: |
https://doi.org/10.1007/s00425-021-03598-0 |
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Idioma: |
Inglês |
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Conteúdo: |
Repetitive sequences are ubiquitous and fast-evolving elements responsible for size variation and large-scale organization of plant genomes. Within Passifora genus, a tenfold variation in genome size, not attributed to polyploidy, is known. Here, we applied a combined in silico and cytological approach to study the organization and diversifcation of repetitive elements in three species of this genus representing its known range in genome size variation. Sequences were classifed in terms of type and repetitiveness and the most abundant were mapped to chromosomes. We identifed long terminal repeat (LTR) retrotransposons as the most abundant elements in the three genomes, showing a considerable variation among species. Satellite DNAs (satDNAs) were less representative, but highly diverse between subgenera. Our results clearly confrm that the largest genome species (Passifora quadrangularis) presents a higher accumulation of repetitive DNA sequences, specially Angela and Tekay elements, making up most of its genome. Passifora cincinnata, with intermediate genome and from the same subgenus, showed similarity with P. quadrangularis regarding the families of repetitive DNA sequences, but in diferent proportions. On the other hand, Passifora organensis, the smallest genome, from a diferent subgenus, presented greater diversity and the highest proportion of satDNA. Altogether, our data indicates that while large genomes evolved by an accumulation of retrotransposons, the smallest genome known for the genus has evolved by diversifcation of diferent repeat types, particularly satDNAs. MenosRepetitive sequences are ubiquitous and fast-evolving elements responsible for size variation and large-scale organization of plant genomes. Within Passifora genus, a tenfold variation in genome size, not attributed to polyploidy, is known. Here, we applied a combined in silico and cytological approach to study the organization and diversifcation of repetitive elements in three species of this genus representing its known range in genome size variation. Sequences were classifed in terms of type and repetitiveness and the most abundant were mapped to chromosomes. We identifed long terminal repeat (LTR) retrotransposons as the most abundant elements in the three genomes, showing a considerable variation among species. Satellite DNAs (satDNAs) were less representative, but highly diverse between subgenera. Our results clearly confrm that the largest genome species (Passifora quadrangularis) presents a higher accumulation of repetitive DNA sequences, specially Angela and Tekay elements, making up most of its genome. Passifora cincinnata, with intermediate genome and from the same subgenus, showed similarity with P. quadrangularis regarding the families of repetitive DNA sequences, but in diferent proportions. On the other hand, Passifora organensis, the smallest genome, from a diferent subgenus, presented greater diversity and the highest proportion of satDNA. Altogether, our data indicates that while large genomes evolved by an accumulation of retrotransposons, the smallest gen... Mostrar Tudo |
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Palavras-Chave: |
Escumação do genma; Evolução cromossmica; SatDNA. |
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Thesagro: |
Genoma; Maracujá; Passiflora Edulis. |
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Thesaurus Nal: |
Passion fruits; Retrotransposons. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
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Registro original: |
Embrapa Semiárido (CPATSA) |
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| 1. |  | FREITAS, E. R.; SAKOMURA, N. K.; EZEQUIEL, J. M. B.; NEME, R.; MENDONÇA, M. de O. Energia metabolizável de alimentos na formulação de ração para frangos de corte. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 41, n. 1, p. 107-115, jan. 2006 Título em inglês: Metabolizable energy of feeds on diet formulation for broilers.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 2. | | SABINO, H. F. N.; SAKOMURA, N. K.; NEME, R.; FREITAS, E. R. Níveis protéicos na ração de frangos de corte na fase de crescimento. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 39, n. 5, p. 407-412, maio 2004 Título em inglês: Dietary protein levels on the growing broiler diets.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 3. | | FREITAS, E. R.; SAKOMURA, N. K.; NEME, R.; SANTOS, A. L. dos. Valor energético do óleo ácido de soja para aves. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 40, n. 3, p. 241-246, mar. 2005 Título em inglês: Energetic value of soybean acid oil in poultry nutrition.| Biblioteca(s): Embrapa Unidades Centrais. |
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