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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
24/01/2020 |
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Data da última atualização: |
24/01/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUZA, I. R. P. de; GUILHEN, J. H. S.; ANDRADE, C. de L. T. de; PINTO, M. de O.; LANA, U. G. de P.; PASTINA, M. M. |
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Afiliação: |
ISABEL REGINA PRAZERES DE SOUZA, CNPMS; JOSÉ HENRIQUE SOLER GUILHEN, Universidade Federal do Espírito Santo; CAMILO DE LELIS TEIXEIRA DE ANDRADE, CNPMS; MARCOS DE OLIVEIRA PINTO, CNPMS; UBIRACI GOMES DE PAULA LANA, CNPMS; MARIA MARTA PASTINA, CNPMS. |
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Título: |
Major effect qtl on chromosome 3 conferring maize resistance to Sugarcane mosaic virus. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Revista Brasileira de Milho e Sorgo, v. 18, n. 3, p. 322-339, 2019. |
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Idioma: |
Inglês |
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Conteúdo: |
The Sugarcane mosaic virus (SCMV), a maize pathogen epidemic worldwide, is the causal agent of common mosaic, one of the most important viral diseases in Brazil. In this study, we mapped and characterized quantitative trait loci (QTL) conferring resistance to SCMV in a maize population consisting of 127 F2:3 families from the cross between two Brazilian maize inbred lines, L18 (resistant) × L19 (susceptible). Field trials were carried out in two years to evaluate the F2:3 families according to a resistance score after artificial inoculation. QTLs were detected via composite interval mapping, using a linkage map based on 82 SSRs, 3 CAPS and 296 SNPs. The heritability ranged from 73.68 to 95.16% and SCMV resistance QTLs were consistently identified on chromosomes 1 and 3, showing minor and major effects, respectively. The major QTL on chromosome 3 explained a large proportion of the genetic variance, being 50 and 70% in year 1 and 2, respectively, while the minor QTL on chromosome 1 explained 11 and 8% in year 1 and 2, respectively. The SNP marker co-localized with the major QTL peak on chromosome 3 and its right flanking marker are positioned inside the predicted gene GRMZM2G122443 encoding a glucosidase II, and the left flanking marker inside the GRMZM2G140537 that encodes a protein tyrosine kinase. Moreover, within this QTL region there are also the GRMZM2G160902 and GRMZM2G122481 predicted genes, encoding a bZIP transcription factor and a cytochrome C oxidase, respectively. The colocalization with this major effect QTL suggests a putative involvement of these candidate genes with maize responses to SCMV resistance, but further functional studies are required for such validation. Our results provide resistance source and genomic target for marker-assisted breeding aiming the development of maize resistant cultivars to SCMV. MenosThe Sugarcane mosaic virus (SCMV), a maize pathogen epidemic worldwide, is the causal agent of common mosaic, one of the most important viral diseases in Brazil. In this study, we mapped and characterized quantitative trait loci (QTL) conferring resistance to SCMV in a maize population consisting of 127 F2:3 families from the cross between two Brazilian maize inbred lines, L18 (resistant) × L19 (susceptible). Field trials were carried out in two years to evaluate the F2:3 families according to a resistance score after artificial inoculation. QTLs were detected via composite interval mapping, using a linkage map based on 82 SSRs, 3 CAPS and 296 SNPs. The heritability ranged from 73.68 to 95.16% and SCMV resistance QTLs were consistently identified on chromosomes 1 and 3, showing minor and major effects, respectively. The major QTL on chromosome 3 explained a large proportion of the genetic variance, being 50 and 70% in year 1 and 2, respectively, while the minor QTL on chromosome 1 explained 11 and 8% in year 1 and 2, respectively. The SNP marker co-localized with the major QTL peak on chromosome 3 and its right flanking marker are positioned inside the predicted gene GRMZM2G122443 encoding a glucosidase II, and the left flanking marker inside the GRMZM2G140537 that encodes a protein tyrosine kinase. Moreover, within this QTL region there are also the GRMZM2G160902 and GRMZM2G122481 predicted genes, encoding a bZIP transcription factor and a cytochrome C oxidase, respectively... Mostrar Tudo |
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Thesagro: |
Gene; Linhagem; Marcador Genético; Zea Mays. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/209549/1/Major-effect.pdf
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Marc: |
LEADER 02540naa a2200229 a 4500
001 2119299
005 2020-01-24
008 2019 bl uuuu u00u1 u #d
100 1 $aSOUZA, I. R. P. de
245 $aMajor effect qtl on chromosome 3 conferring maize resistance to Sugarcane mosaic virus.$h[electronic resource]
260 $c2019
520 $aThe Sugarcane mosaic virus (SCMV), a maize pathogen epidemic worldwide, is the causal agent of common mosaic, one of the most important viral diseases in Brazil. In this study, we mapped and characterized quantitative trait loci (QTL) conferring resistance to SCMV in a maize population consisting of 127 F2:3 families from the cross between two Brazilian maize inbred lines, L18 (resistant) × L19 (susceptible). Field trials were carried out in two years to evaluate the F2:3 families according to a resistance score after artificial inoculation. QTLs were detected via composite interval mapping, using a linkage map based on 82 SSRs, 3 CAPS and 296 SNPs. The heritability ranged from 73.68 to 95.16% and SCMV resistance QTLs were consistently identified on chromosomes 1 and 3, showing minor and major effects, respectively. The major QTL on chromosome 3 explained a large proportion of the genetic variance, being 50 and 70% in year 1 and 2, respectively, while the minor QTL on chromosome 1 explained 11 and 8% in year 1 and 2, respectively. The SNP marker co-localized with the major QTL peak on chromosome 3 and its right flanking marker are positioned inside the predicted gene GRMZM2G122443 encoding a glucosidase II, and the left flanking marker inside the GRMZM2G140537 that encodes a protein tyrosine kinase. Moreover, within this QTL region there are also the GRMZM2G160902 and GRMZM2G122481 predicted genes, encoding a bZIP transcription factor and a cytochrome C oxidase, respectively. The colocalization with this major effect QTL suggests a putative involvement of these candidate genes with maize responses to SCMV resistance, but further functional studies are required for such validation. Our results provide resistance source and genomic target for marker-assisted breeding aiming the development of maize resistant cultivars to SCMV.
650 $aGene
650 $aLinhagem
650 $aMarcador Genético
650 $aZea Mays
700 1 $aGUILHEN, J. H. S.
700 1 $aANDRADE, C. de L. T. de
700 1 $aPINTO, M. de O.
700 1 $aLANA, U. G. de P.
700 1 $aPASTINA, M. M.
773 $tRevista Brasileira de Milho e Sorgo$gv. 18, n. 3, p. 322-339, 2019.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
15/05/2003 |
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Data da última atualização: |
22/05/2006 |
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Autoria: |
LANTMANN, A. F.; CASTRO, C. de; SFREDO, G. J.; BORKERT, C. M. |
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Título: |
Produtividade e análise de alternativas para a nutrição da soja em latossolo roxo distrófico sob semeadura direta. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
In: HOFFMANN-CAMPO, C. B.; SARAIVA, O. F. (Org.). Resultados de pesquisa da Embrapa Soja - 2001: solos. Londrina: Embrapa Soja, 2002. |
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Páginas: |
p. 12-15. |
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Série: |
(Embrapa Soja. Documentos, 196). |
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Idioma: |
Português |
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Thesagro: |
Fertilidade do Solo; Nutrição Vegetal; Pratica Cultural; Soja. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00751naa a2200217 a 4500
001 1463754
005 2006-05-22
008 2002 bl uuuu u00u1 u #d
100 1 $aLANTMANN, A. F.
245 $aProdutividade e análise de alternativas para a nutrição da soja em latossolo roxo distrófico sob semeadura direta.
260 $c2002
300 $ap. 12-15.
490 $a(Embrapa Soja. Documentos, 196).
650 $aFertilidade do Solo
650 $aNutrição Vegetal
650 $aPratica Cultural
650 $aSoja
700 1 $aCASTRO, C. de
700 1 $aSFREDO, G. J.
700 1 $aBORKERT, C. M.
773 $tIn: HOFFMANN-CAMPO, C. B.; SARAIVA, O. F. (Org.). Resultados de pesquisa da Embrapa Soja - 2001: solos. Londrina: Embrapa Soja, 2002.
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