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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
27/12/2019 |
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Data da última atualização: |
27/12/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MATIAS, F. I.; VIDOTTI, M. S.; MEIRELES, K. G. X.; BARRIOS, S. C. L.; VALLE, C. B. do; CARLEY, C. A. S.; FRITSCHE-NETO, R. |
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Afiliação: |
Filipe Inácio Matias, Universidade de São Paulo - USP/Escola Superior de Agricultura "Luiz de Queiroz" - ESALQ/Departamento de Genética; Miriam Suzane Vidotti, Universidade de São Paulo - USP/Escola Superior de Agricultura "Luiz de Queiroz" - ESALQ/Departamento de Genética; KAREM GUIMARAES XAVIER MEIRELES, CNPGC; SANZIO CARVALHO LIMA BARRIOS, CNPGC; Cacilda Borges do Valle, Colaboradora da Embrapa Gado de Corte; Cari A. Schmitz Carley; Roberto Fritsche-Neto, Universidade de São Paulo - USP/Escola Superior de Agricultura "Luiz de Queiroz" - ESALQ/Departamento de GenéticaUniversidade de São Paulo - USP/Escola Superior de Agricultura "Luiz de Queiroz" - ESALQ/Departamento de Genética. |
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Título: |
Association Mapping Considering Allele Dosage: An Example of Forage Traits in an Interspecific Segmental Allotetraploid Urochloa spp. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Crop Science, v. 59, n. 5, p. 2062-2076, september-october, 2019. |
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Idioma: |
Inglês |
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Conteúdo: |
The breeding process in tropical segmental allopolyploid forage Urochloa is challenging due to the complex genetic control of the traits. Knowledge about genes associated with forage traits, expressed in the different cutting seasons, are extremely useful to support breeding programs and development of new cultivars. Thus, the aims of our study were (i) to identify genomic regions related to forage traits through genomewide association studies (GWAS), and (ii) to verify the influence of allele dosage on these results. A panel of 272 genotypes of Urochloa spp. [U. brizantha (Hoscht. ex A. Rich.) R. Webster ´ U. ruziziensis (Hoscht. ex A. Rich.) R. Webster] was evaluated in both the wet and dry seasons. The GWAS analyses were performed with 26,535 single nucleotide polymorphisms (SNPs) obtained by genotyping-by-sequencing (GBS) using diploid and tetraploid allele dosage configurations. Furthermore, we evaluated scenarios including additive, dominance, and epistatic effects. Seven candidate genomic regions associated with the main forage traits of Urochloa spp. were identified. The importance of the diploid and tetraploid molecular configuration in GWAS analyses for segmental allopolyploid species was demonstrated to identify the genomic behavior of important regions. Results demonstrated that it is possible to identify the same regions using both ploidy configurations; however, in some cases, the allele substitution effect can be biased mainly for regions with dominance and epistatic effects. Finally, this study contributes to the understanding of genetic control of tropical forage traits and genomics to accelerate the selection and reduce the cost to release new cultivars. MenosThe breeding process in tropical segmental allopolyploid forage Urochloa is challenging due to the complex genetic control of the traits. Knowledge about genes associated with forage traits, expressed in the different cutting seasons, are extremely useful to support breeding programs and development of new cultivars. Thus, the aims of our study were (i) to identify genomic regions related to forage traits through genomewide association studies (GWAS), and (ii) to verify the influence of allele dosage on these results. A panel of 272 genotypes of Urochloa spp. [U. brizantha (Hoscht. ex A. Rich.) R. Webster ´ U. ruziziensis (Hoscht. ex A. Rich.) R. Webster] was evaluated in both the wet and dry seasons. The GWAS analyses were performed with 26,535 single nucleotide polymorphisms (SNPs) obtained by genotyping-by-sequencing (GBS) using diploid and tetraploid allele dosage configurations. Furthermore, we evaluated scenarios including additive, dominance, and epistatic effects. Seven candidate genomic regions associated with the main forage traits of Urochloa spp. were identified. The importance of the diploid and tetraploid molecular configuration in GWAS analyses for segmental allopolyploid species was demonstrated to identify the genomic behavior of important regions. Results demonstrated that it is possible to identify the same regions using both ploidy configurations; however, in some cases, the allele substitution effect can be biased mainly for regions with dominance and ep... Mostrar Tudo |
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Palavras-Chave: |
Tropical regions. |
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Thesaurus Nal: |
Animal performance; Animal proteins; Cattle feeding; Forage; Pastures; Urochloa. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/207880/1/Association-mapping-considering-Allele-dosage.pdf
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Marc: |
LEADER 02549naa a2200277 a 4500
001 2117774
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008 2019 bl uuuu u00u1 u #d
100 1 $aMATIAS, F. I.
245 $aAssociation Mapping Considering Allele Dosage$bAn Example of Forage Traits in an Interspecific Segmental Allotetraploid Urochloa spp.$h[electronic resource]
260 $c2019
520 $aThe breeding process in tropical segmental allopolyploid forage Urochloa is challenging due to the complex genetic control of the traits. Knowledge about genes associated with forage traits, expressed in the different cutting seasons, are extremely useful to support breeding programs and development of new cultivars. Thus, the aims of our study were (i) to identify genomic regions related to forage traits through genomewide association studies (GWAS), and (ii) to verify the influence of allele dosage on these results. A panel of 272 genotypes of Urochloa spp. [U. brizantha (Hoscht. ex A. Rich.) R. Webster ´ U. ruziziensis (Hoscht. ex A. Rich.) R. Webster] was evaluated in both the wet and dry seasons. The GWAS analyses were performed with 26,535 single nucleotide polymorphisms (SNPs) obtained by genotyping-by-sequencing (GBS) using diploid and tetraploid allele dosage configurations. Furthermore, we evaluated scenarios including additive, dominance, and epistatic effects. Seven candidate genomic regions associated with the main forage traits of Urochloa spp. were identified. The importance of the diploid and tetraploid molecular configuration in GWAS analyses for segmental allopolyploid species was demonstrated to identify the genomic behavior of important regions. Results demonstrated that it is possible to identify the same regions using both ploidy configurations; however, in some cases, the allele substitution effect can be biased mainly for regions with dominance and epistatic effects. Finally, this study contributes to the understanding of genetic control of tropical forage traits and genomics to accelerate the selection and reduce the cost to release new cultivars.
650 $aAnimal performance
650 $aAnimal proteins
650 $aCattle feeding
650 $aForage
650 $aPastures
650 $aUrochloa
653 $aTropical regions
700 1 $aVIDOTTI, M. S.
700 1 $aMEIRELES, K. G. X.
700 1 $aBARRIOS, S. C. L.
700 1 $aVALLE, C. B. do
700 1 $aCARLEY, C. A. S.
700 1 $aFRITSCHE-NETO, R.
773 $tCrop Science$gv. 59, n. 5, p. 2062-2076, september-october, 2019.
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Embrapa Gado de Corte (CNPGC) |
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| 1. |  | MATIAS, F. I.; VIDOTTI, M. S.; MEIRELES, K. G. X.; BARRIOS, S. C. L.; VALLE, C. B. do; CARLEY, C. A. S.; FRITSCHE-NETO, R. Association Mapping Considering Allele Dosage: An Example of Forage Traits in an Interspecific Segmental Allotetraploid Urochloa spp. Crop Science, v. 59, n. 5, p. 2062-2076, september-october, 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Gado de Corte. |
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