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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Gado de Corte; Embrapa Pecuária Sudeste. |
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Data corrente: |
06/11/2023 |
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Data da última atualização: |
06/11/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MORAES, A. da C. L.; MOLLINARI, M.; FERREIRA, R. C. U.; AONO, A.; LARA, L. A. de C.; PESSOA FILHO, M. A. C. de P.; BARRIOS, S. C. L.; GARCIA, A. A. F.; VALLE, C. B. do; SOUZA, A. P. de; VIGNA, B. B. Z. |
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Afiliação: |
ALINE DA COSTA LIMA MORAES, UNIVERSIDADE DE CAMPINAS; MARCELO MOLLINARI, NORTH CAROLINA STATE UNIVERSITY; REBECCA CAROLINE ULBRICHT FERREIRA, UNIVERSIDADE DE CAMPINAS; ALEXANDRE AONO, UNIVERSIDADE DE CAMPINAS; LETÍCIA APARECIDA DE CASTRO LARA, UNIVERSIDADE DE SÃO PAULO; MARCO AURÉLIO CALDAS DE PINHO PESSO, CPAC; SANZIO CARVALHO LIMA BARRIOS, CNPGC; ANTONIO AUGUSTO FRANCO GARCIA, UNIVERSIDADE DE SÃO PAULO; CACILDA BORGES DO VALLE, CNPGC; ANETE PEREIRA DE SOUZA, UNIVERSIDADE DE CAMPINAS; BIANCA BACCILI ZANOTTO VIGNA, CPPSE. |
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Título: |
Advances in genomic characterization of Urochloa humidicola: exploring polyploid inheritance and apomixis. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Theoretical and Applied Genetics, v. 136, n. 11, 2023. |
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Páginas: |
17 p. |
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DOI: |
https://doi.org/10.1007/s00122-023-04485-w |
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Idioma: |
Inglês |
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Conteúdo: |
Tropical forage grasses are an important food source for animal feeding, with Urochloa humidicola, also known as Koronivia grass, being one of the main pasture grasses for poorly drained soils in the tropics. However, genetic and genomic resources for this species are lacking due to its genomic complexity, including high heterozygosity, evidence of segmental allopolyploidy, and reproduction by apomixis. These complexities hinder the application of marker-assisted selection (MAS) in breeding programs. Here, we developed the highest-density linkage map currently available for the hexaploid tropical forage grass U. humidicola. This map was constructed using a biparental F1 population generated from a cross between the female parent H031 (CIAT 26146), the only known sexual genotype for the species, and the apomictic male parent H016 (BRS cv. Tupi). The linkage analysis included 4873 single nucleotide polymorphism (SNP) markers with allele dosage information. It allowed mapping of the ASGR locus and apospory phenotype to linkage group 3, in a region syntenic with chromosome 3 of Urochloa ruziziensis and chromosome 1 of Setaria italica. We also identified hexaploid haplotypes for all individuals, assessed the meiotic configuration, and estimated the level of preferential pairing in parents during the meiotic process, which revealed the autopolyploid origin of sexual H031 in contrast to apomictic H016, which presented allopolyploid behavior in preferential pairing analysis. These results provide new information regarding the genetic organization, mode of reproduction, and allopolyploid origin of U. humidicola, potential SNPs markers associated with apomixis for MAS and resources for research on polyploids and tropical forage grasses. MenosTropical forage grasses are an important food source for animal feeding, with Urochloa humidicola, also known as Koronivia grass, being one of the main pasture grasses for poorly drained soils in the tropics. However, genetic and genomic resources for this species are lacking due to its genomic complexity, including high heterozygosity, evidence of segmental allopolyploidy, and reproduction by apomixis. These complexities hinder the application of marker-assisted selection (MAS) in breeding programs. Here, we developed the highest-density linkage map currently available for the hexaploid tropical forage grass U. humidicola. This map was constructed using a biparental F1 population generated from a cross between the female parent H031 (CIAT 26146), the only known sexual genotype for the species, and the apomictic male parent H016 (BRS cv. Tupi). The linkage analysis included 4873 single nucleotide polymorphism (SNP) markers with allele dosage information. It allowed mapping of the ASGR locus and apospory phenotype to linkage group 3, in a region syntenic with chromosome 3 of Urochloa ruziziensis and chromosome 1 of Setaria italica. We also identified hexaploid haplotypes for all individuals, assessed the meiotic configuration, and estimated the level of preferential pairing in parents during the meiotic process, which revealed the autopolyploid origin of sexual H031 in contrast to apomictic H016, which presented allopolyploid behavior in preferential pairing analysis. These r... Mostrar Tudo |
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Thesaurus Nal: |
Animal feeding; Forage grasses; Plant breeding; Polyploidy; Urochloa humidicola. |
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Categoria do assunto: |
--
G Melhoramento Genético |
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Marc: |
LEADER 02743naa a2200325 a 4500
001 2157776
005 2023-11-06
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s00122-023-04485-w$2DOI
100 1 $aMORAES, A. da C. L.
245 $aAdvances in genomic characterization of Urochloa humidicola$bexploring polyploid inheritance and apomixis.$h[electronic resource]
260 $c2023
300 $a17 p.
520 $aTropical forage grasses are an important food source for animal feeding, with Urochloa humidicola, also known as Koronivia grass, being one of the main pasture grasses for poorly drained soils in the tropics. However, genetic and genomic resources for this species are lacking due to its genomic complexity, including high heterozygosity, evidence of segmental allopolyploidy, and reproduction by apomixis. These complexities hinder the application of marker-assisted selection (MAS) in breeding programs. Here, we developed the highest-density linkage map currently available for the hexaploid tropical forage grass U. humidicola. This map was constructed using a biparental F1 population generated from a cross between the female parent H031 (CIAT 26146), the only known sexual genotype for the species, and the apomictic male parent H016 (BRS cv. Tupi). The linkage analysis included 4873 single nucleotide polymorphism (SNP) markers with allele dosage information. It allowed mapping of the ASGR locus and apospory phenotype to linkage group 3, in a region syntenic with chromosome 3 of Urochloa ruziziensis and chromosome 1 of Setaria italica. We also identified hexaploid haplotypes for all individuals, assessed the meiotic configuration, and estimated the level of preferential pairing in parents during the meiotic process, which revealed the autopolyploid origin of sexual H031 in contrast to apomictic H016, which presented allopolyploid behavior in preferential pairing analysis. These results provide new information regarding the genetic organization, mode of reproduction, and allopolyploid origin of U. humidicola, potential SNPs markers associated with apomixis for MAS and resources for research on polyploids and tropical forage grasses.
650 $aAnimal feeding
650 $aForage grasses
650 $aPlant breeding
650 $aPolyploidy
650 $aUrochloa humidicola
700 1 $aMOLLINARI, M.
700 1 $aFERREIRA, R. C. U.
700 1 $aAONO, A.
700 1 $aLARA, L. A. de C.
700 1 $aPESSOA FILHO, M. A. C. de P.
700 1 $aBARRIOS, S. C. L.
700 1 $aGARCIA, A. A. F.
700 1 $aVALLE, C. B. do
700 1 $aSOUZA, A. P. de
700 1 $aVIGNA, B. B. Z.
773 $tTheoretical and Applied Genetics$gv. 136, n. 11, 2023.
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| 8. |  | VALLE, C. B. do. Brachiaria: Seleção vs. melhoramento. In: VALERIO, J.R.; MACEDO, M.C.M. Coletânea de seminários técnicos 1988/1991 (Resumos). Campo Grande, MS : EMBRAPA-CNPGC, 1994. p. 23 (EMBRAPA-CNPGC. Documentos, 55). CNPGC.| Biblioteca(s): Embrapa Gado de Corte. |
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