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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
24/08/2018 |
Data da última atualização: |
20/11/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SOUZA, L. M. de; SANTOS, L. H. B. dos; ROSA, J. R. B. F.; SILVA, C. C. da; MANTELLO, C. C.; CONSON, A. R. O.; SCALOPPI JUNIOR, E. J.; FIALHO, J. de F.; MORAES, M. L. T. de; GONÇALVES, P. de S.; MARGARIDO, G. R. A.; GARCIA, A. A. F.; LE GUEN, V.; SOUZA, A. P. de. |
Afiliação: |
LIVIA M. DE SOUZA, UNICAMP; LUCIANO H. B. DOS SANTOS, UNICAMP; JOÃO R. B. F. ROSA, USP/ESALQ; CARLA C. DA SILVA, UNICAMP; CAMILA C. MANTELLO, UNICAMP; ANDRE R. O. CONSON, UNICAMP; ERIVALDO J. SCALOPPI JUNIOR, IAC; JOSEFINO DE FREITAS FIALHO, CPAC; MARIO LUIZ T. DE MORAES, UNESP; PAULO DE S. GONÇALVES, IAC; GABRIEL R. A. MARGARIDO, USP/ESALQ; ANTONIO A. F. GARCIA, USP/ESALQ; VINCENT LE GUEN, CIRAD; ANETE P. DE SOUZA, UNICAMP. |
Título: |
Linkage disequilibrium and population structure in wild and cultivated populations of rubber tree (Hevea brasiliensis). |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Frontiers in Plant Science, v. 9, article 815, 03 July 2018. |
DOI: |
https://doi.org/10.3389/fpls.2018.00815 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Among rubber tree species, which belong to the Hevea genus of the Euphorbiaceae family, Hevea brasiliensis (Willd. ex Adr.de Juss.) Muell. Arg. is the main commercial source of natural rubber production worldwide. Knowledge of the population structure and linkage disequilibrium (LD) of this species is essential for the efficient organization and exploitation of genetic resources. Here, we obtained single-nucleotide polymorphisms (SNPs) using a genotyping-by-sequencing (GBS) approach and then employed the SNPs for the following objectives: (i) to identify the positions of SNPs on a genetic map of a segregating mapping population, (ii) to evaluate the population structure of a germplasm collection, and (iii) to detect patterns of LD decay among chromosomes for future genetic association studies in rubber tree. A total of 626 genotypes, including both germplasm accessions (368) and individuals from a genetic mapping population (254), were genotyped. A total of 77,660 and 21,283 SNPs were detected by GBS in the germplasm and mapping populations, respectively. The mapping population, which was previously mapped, was constructed with 1,062 markers, among which only 576 SNPs came from GBS, reducing the average interval between two adjacent markers to 4.4 cM. SNPs from GBS genotyping were used for the analysis of genetic structure and LD estimation in the germplasm accessions. Two groups, which largely corresponded to the cultivated and wild populations, were detected using STRUCTURE and via principal coordinate analysis. LD analysis, also using the mapped SNPs, revealed that non-random associations varied along chromosomes, with regions of high LD interspersed with regions of low LD. Considering the length of the genetic map (4,693 cM) and the mean LD (0.49 for cultivated and 0.02 for wild populations), a large number of evenly spaced SNPs would be needed to perform genome-wide association studies in rubber tree, and the wilder the genotypes used, the more difficult the mapping saturation. MenosAbstract: Among rubber tree species, which belong to the Hevea genus of the Euphorbiaceae family, Hevea brasiliensis (Willd. ex Adr.de Juss.) Muell. Arg. is the main commercial source of natural rubber production worldwide. Knowledge of the population structure and linkage disequilibrium (LD) of this species is essential for the efficient organization and exploitation of genetic resources. Here, we obtained single-nucleotide polymorphisms (SNPs) using a genotyping-by-sequencing (GBS) approach and then employed the SNPs for the following objectives: (i) to identify the positions of SNPs on a genetic map of a segregating mapping population, (ii) to evaluate the population structure of a germplasm collection, and (iii) to detect patterns of LD decay among chromosomes for future genetic association studies in rubber tree. A total of 626 genotypes, including both germplasm accessions (368) and individuals from a genetic mapping population (254), were genotyped. A total of 77,660 and 21,283 SNPs were detected by GBS in the germplasm and mapping populations, respectively. The mapping population, which was previously mapped, was constructed with 1,062 markers, among which only 576 SNPs came from GBS, reducing the average interval between two adjacent markers to 4.4 cM. SNPs from GBS genotyping were used for the analysis of genetic structure and LD estimation in the germplasm accessions. Two groups, which largely corresponded to the cultivated and wild populations, were detected usin... Mostrar Tudo |
Thesagro: |
Comportamento de Variedade; Hevea Brasiliensis; População de Planta; Seringueira; Variação Genética. |
Categoria do assunto: |
G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/181926/1/DL-Hevea-brasiliensis-Livia-public-Frontiers-3.07.2018apagar.pdf
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Marc: |
LEADER 03139naa a2200349 a 4500 001 2094508 005 2018-11-20 008 2018 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.3389/fpls.2018.00815$2DOI 100 1 $aSOUZA, L. M. de 245 $aLinkage disequilibrium and population structure in wild and cultivated populations of rubber tree (Hevea brasiliensis).$h[electronic resource] 260 $c2018 520 $aAbstract: Among rubber tree species, which belong to the Hevea genus of the Euphorbiaceae family, Hevea brasiliensis (Willd. ex Adr.de Juss.) Muell. Arg. is the main commercial source of natural rubber production worldwide. Knowledge of the population structure and linkage disequilibrium (LD) of this species is essential for the efficient organization and exploitation of genetic resources. Here, we obtained single-nucleotide polymorphisms (SNPs) using a genotyping-by-sequencing (GBS) approach and then employed the SNPs for the following objectives: (i) to identify the positions of SNPs on a genetic map of a segregating mapping population, (ii) to evaluate the population structure of a germplasm collection, and (iii) to detect patterns of LD decay among chromosomes for future genetic association studies in rubber tree. A total of 626 genotypes, including both germplasm accessions (368) and individuals from a genetic mapping population (254), were genotyped. A total of 77,660 and 21,283 SNPs were detected by GBS in the germplasm and mapping populations, respectively. The mapping population, which was previously mapped, was constructed with 1,062 markers, among which only 576 SNPs came from GBS, reducing the average interval between two adjacent markers to 4.4 cM. SNPs from GBS genotyping were used for the analysis of genetic structure and LD estimation in the germplasm accessions. Two groups, which largely corresponded to the cultivated and wild populations, were detected using STRUCTURE and via principal coordinate analysis. LD analysis, also using the mapped SNPs, revealed that non-random associations varied along chromosomes, with regions of high LD interspersed with regions of low LD. Considering the length of the genetic map (4,693 cM) and the mean LD (0.49 for cultivated and 0.02 for wild populations), a large number of evenly spaced SNPs would be needed to perform genome-wide association studies in rubber tree, and the wilder the genotypes used, the more difficult the mapping saturation. 650 $aComportamento de Variedade 650 $aHevea Brasiliensis 650 $aPopulação de Planta 650 $aSeringueira 650 $aVariação Genética 700 1 $aSANTOS, L. H. B. dos 700 1 $aROSA, J. R. B. F. 700 1 $aSILVA, C. C. da 700 1 $aMANTELLO, C. C. 700 1 $aCONSON, A. R. O. 700 1 $aSCALOPPI JUNIOR, E. J. 700 1 $aFIALHO, J. de F. 700 1 $aMORAES, M. L. T. de 700 1 $aGONÇALVES, P. de S. 700 1 $aMARGARIDO, G. R. A. 700 1 $aGARCIA, A. A. F. 700 1 $aLE GUEN, V. 700 1 $aSOUZA, A. P. de 773 $tFrontiers in Plant Science$gv. 9, article 815, 03 July 2018.
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Registro Completo
Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
26/11/2005 |
Data da última atualização: |
23/08/2007 |
Autoria: |
EMBRAPA. Centro Nacional de Pesquisa de Algodão (Campina Grande,PB). |
Título: |
III Plano Diretor da Embrapa Algodão - 2004- 2007. |
Ano de publicação: |
2005 |
Fonte/Imprenta: |
Campina Grande, 2005. |
Páginas: |
61p. |
Idioma: |
Português |
Conteúdo: |
Introdução; Visão do futuro; Análise do ambiente esterno; Missão, visão, valores e foco de atuação; Objetivos estratégicos e metas; Diretrizes estratégicas e metas; Projetos estruturantes. |
Palavras-Chave: |
Embrapa Algodão - III Plano Diretor; Instituição; Plano diretor. |
Thesagro: |
Algodão; Pesquisa. |
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LEADER 00711nam a2200181 a 4500 001 1274172 005 2007-08-23 008 2005 bl uuuu 00u1 u #d 100 1 $aEMBRAPA. Centro Nacional de Pesquisa de Algodão (Campina Grande,PB) 245 $aIII Plano Diretor da Embrapa Algodão - 2004- 2007. 260 $aCampina Grande$c2005 300 $a61p. 520 $aIntrodução; Visão do futuro; Análise do ambiente esterno; Missão, visão, valores e foco de atuação; Objetivos estratégicos e metas; Diretrizes estratégicas e metas; Projetos estruturantes. 650 $aAlgodão 650 $aPesquisa 653 $aEmbrapa Algodão - III Plano Diretor 653 $aInstituição 653 $aPlano diretor
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