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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
28/10/2015 |
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Data da última atualização: |
18/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CABRAL, P. G. C.; MACIEL-ZAMBOLIM, E.; OLIVEIRA, S. A. S. de; CAIXETA, E. T.; ZAMBOLIM, L. |
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Afiliação: |
P. G. C. CABRAL, UFV; E. MACIEL-ZAMBOLIM, UFV; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF; EVELINE TEIXEIRA CAIXETA, SAPC; L. ZAMBOLIM, UFV. |
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Título: |
Genetic diversity and structure of Hemileia vastatrix populations on Coffea spp. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Plant Pathology, 2015. |
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ISSN: |
1365-3059 |
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DOI: |
10.1111/ppa.12411 |
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Idioma: |
Português |
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Conteúdo: |
Coffee leaf rust is the most limiting disease for coffee cultivation in Brazil. Despite its importance, relatively little is known about the genetic diversity of Hemileia vastatrix, the rust causal agent. In this work, the DNA from 112 monopustule isolates from different geographic locations and coffee genotypes were analysed by amplified fragment length polymorphisms (AFLP). The objectives were to assess the influence of the host and geographic origin on the diversity and population differentiation in H. vastatrix. The fungal population showed a low level of genotypic diversity. Gene diversity (h) was 0027 and the hypothesis of random mating in the total population was rejected, but evidence for recombination was found for two subpopulations (São Paulo and Parana). The analysis of molecular variance revealed that 90% of the genetic distribution of the pathogen occurs among isolates within the subpopulation (states or host of origin). There was no correlation between geographic and genetic distance (r = 0024, P = 074), which together with the high number of migrants and the low degree of differentiation in populations of H. vastatrix, is consistent with the fact that the inoculum is probably easily dispersed by wind over long distances, allowing dispersal of the pathogen among coffee growing areas in Brazil. Therefore, it is difficult to predict the durability of resistant sources to coffee rust. The recommendation for the breeding programmes is thus to incorporate multigenic resistance as a control strategy. MenosCoffee leaf rust is the most limiting disease for coffee cultivation in Brazil. Despite its importance, relatively little is known about the genetic diversity of Hemileia vastatrix, the rust causal agent. In this work, the DNA from 112 monopustule isolates from different geographic locations and coffee genotypes were analysed by amplified fragment length polymorphisms (AFLP). The objectives were to assess the influence of the host and geographic origin on the diversity and population differentiation in H. vastatrix. The fungal population showed a low level of genotypic diversity. Gene diversity (h) was 0027 and the hypothesis of random mating in the total population was rejected, but evidence for recombination was found for two subpopulations (São Paulo and Parana). The analysis of molecular variance revealed that 90% of the genetic distribution of the pathogen occurs among isolates within the subpopulation (states or host of origin). There was no correlation between geographic and genetic distance (r = 0024, P = 074), which together with the high number of migrants and the low degree of differentiation in populations of H. vastatrix, is consistent with the fact that the inoculum is probably easily dispersed by wind over long distances, allowing dispersal of the pathogen among coffee growing areas in Brazil. Therefore, it is difficult to predict the durability of resistant sources to coffee rust. The recommendation for the breeding programmes is thus to incorporate multigeni... Mostrar Tudo |
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Thesagro: |
Café; Variação genética. |
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Thesaurus Nal: |
Coffea. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02168naa a2200229 a 4500
001 2027450
005 2023-05-18
008 2015 bl uuuu u00u1 u #d
022 $a1365-3059
024 7 $a10.1111/ppa.12411$2DOI
100 1 $aCABRAL, P. G. C.
245 $aGenetic diversity and structure of Hemileia vastatrix populations on Coffea spp.$h[electronic resource]
260 $c2015
520 $aCoffee leaf rust is the most limiting disease for coffee cultivation in Brazil. Despite its importance, relatively little is known about the genetic diversity of Hemileia vastatrix, the rust causal agent. In this work, the DNA from 112 monopustule isolates from different geographic locations and coffee genotypes were analysed by amplified fragment length polymorphisms (AFLP). The objectives were to assess the influence of the host and geographic origin on the diversity and population differentiation in H. vastatrix. The fungal population showed a low level of genotypic diversity. Gene diversity (h) was 0027 and the hypothesis of random mating in the total population was rejected, but evidence for recombination was found for two subpopulations (São Paulo and Parana). The analysis of molecular variance revealed that 90% of the genetic distribution of the pathogen occurs among isolates within the subpopulation (states or host of origin). There was no correlation between geographic and genetic distance (r = 0024, P = 074), which together with the high number of migrants and the low degree of differentiation in populations of H. vastatrix, is consistent with the fact that the inoculum is probably easily dispersed by wind over long distances, allowing dispersal of the pathogen among coffee growing areas in Brazil. Therefore, it is difficult to predict the durability of resistant sources to coffee rust. The recommendation for the breeding programmes is thus to incorporate multigenic resistance as a control strategy.
650 $aCoffea
650 $aCafé
650 $aVariação genética
700 1 $aMACIEL-ZAMBOLIM, E.
700 1 $aOLIVEIRA, S. A. S. de
700 1 $aCAIXETA, E. T.
700 1 $aZAMBOLIM, L.
773 $tPlant Pathology, 2015.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
25/11/2020 |
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Data da última atualização: |
25/11/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
ALENCAR, N. M. M.; CAZARIN, C. B. B.; CORREA, L. C.; MAROSTICA JUNIOR, M. R.; SILVA, D. J.; BIASOTO, A. C. T.; BEHRENSA, J. H. |
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Afiliação: |
Natália Manzatti Machado Alencar; Cinthia Baú Betim Cazarin; LUIZ CLAUDIO CORREA, CPATSA; Mário Roberto Maróstica Junior; DAVI JOSE SILVA, CPATSA; ALINE TELLES BIASOTO MARQUES, CPATSA; Jorge Herman Behrensa. |
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Título: |
The use of oak chips during the fermentation process: effects on phenolic compounds profile and antioxidant activity in Syrah young wines. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Journal of Food Bioactives, v. 10, p. 70-76, 2020. |
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DOI: |
10.31665/JFB.2020.10229 |
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Idioma: |
Inglês |
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Conteúdo: |
The use of oak chips is an alternative method to the traditional barrels in winemaking in order to improve the aged quality of the red wines. This study investigated the influence of adding of oak chips during the fermentation process on phenolic compounds profile and antioxidant activity. The American (Quercus alba) and/or French (Quercus petreae) oak chips were added (4 g L?1 doses) in the alcoholic fermentation and malolactic fermentation or malolactic fermentation alone. Results indicated that Syrah tropical wines presented higher levels (?265 mg L?1) of phenolic compounds compared to wines fermented with oak chips (223?254 mg L?1). Twenty-five phenolics were identified among the wine samples, with gallic (70.67 mg L?1) and malvidin-3-O-glucoside (68.30 mg L?1) as the main compounds. However, the wine with French oak chip added during malolactic fermentation showed a higher antioxidant activity, when using ORAC assay. This study offers a practical application of oak chips in winemaking process as an alternative to produce high quality young red wines with low cost to the wineries in places of oak barrels. |
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Palavras-Chave: |
Compostos bioativos; Ensaios antioxidantes in vitro; HPLC-DAD-FD; Vinho tinto tropical. |
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Thesagro: |
Uva; Vinho. |
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Thesaurus NAL: |
Grapes. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/218190/1/The-use-of-oak-chips-during-the-fermentation-process-2020.pdf
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Marc: |
LEADER 02022naa a2200289 a 4500
001 2127020
005 2020-11-25
008 2020 bl uuuu u00u1 u #d
024 7 $a10.31665/JFB.2020.10229$2DOI
100 1 $aALENCAR, N. M. M.
245 $aThe use of oak chips during the fermentation process$beffects on phenolic compounds profile and antioxidant activity in Syrah young wines.$h[electronic resource]
260 $c2020
520 $aThe use of oak chips is an alternative method to the traditional barrels in winemaking in order to improve the aged quality of the red wines. This study investigated the influence of adding of oak chips during the fermentation process on phenolic compounds profile and antioxidant activity. The American (Quercus alba) and/or French (Quercus petreae) oak chips were added (4 g L?1 doses) in the alcoholic fermentation and malolactic fermentation or malolactic fermentation alone. Results indicated that Syrah tropical wines presented higher levels (?265 mg L?1) of phenolic compounds compared to wines fermented with oak chips (223?254 mg L?1). Twenty-five phenolics were identified among the wine samples, with gallic (70.67 mg L?1) and malvidin-3-O-glucoside (68.30 mg L?1) as the main compounds. However, the wine with French oak chip added during malolactic fermentation showed a higher antioxidant activity, when using ORAC assay. This study offers a practical application of oak chips in winemaking process as an alternative to produce high quality young red wines with low cost to the wineries in places of oak barrels.
650 $aGrapes
650 $aUva
650 $aVinho
653 $aCompostos bioativos
653 $aEnsaios antioxidantes in vitro
653 $aHPLC-DAD-FD
653 $aVinho tinto tropical
700 1 $aCAZARIN, C. B. B.
700 1 $aCORREA, L. C.
700 1 $aMAROSTICA JUNIOR, M. R.
700 1 $aSILVA, D. J.
700 1 $aBIASOTO, A. C. T.
700 1 $aBEHRENSA, J. H.
773 $tJournal of Food Bioactives$gv. 10, p. 70-76, 2020.
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Embrapa Semiárido (CPATSA) |
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