| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
|
Data corrente: |
12/05/2020 |
|
Data da última atualização: |
02/06/2020 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
BRITO, F. S. D.; SANTOS, J. R. P.; AZEVEDO, V. C. R.; PEIXOUTO, Y. S.; OLIVEIRA, S. A. S. de; FERREIRA, C. F.; HADDAD, F.; AMORIM, E. P.; FRAAIJE, B.; MILLER, R. N. G. |
|
Afiliação: |
FABIANE S. D. BRITO; JANSEN R. P. SANTOS; VÂNIA C. R. AZEVEDO; YSLAI S. PEIXOUTO; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF; CLAUDIA FORTES FERREIRA, CNPMF; FERNANDO HADDAD, CNPMF; EDSON PERITO AMORIM, CNPMF; BART FRAAIJE; ROBERT N. G. MILLER. |
|
Título: |
Genetic Diversity and Azole fungicide sensitivity in pseudocercospora musae field populations in Brazil. |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Frontiers in Microbiology, v, 11, n.99, 2020. |
|
ISSN: |
1664-302X |
|
DOI: |
10.3389/fmicb.2020.00099 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Pseudocercospora musae, causal agent of Sigatoka leaf spot, or yellow Sigatoka disease, is considered a major pathogen of banana (Musa spp.). Widely disseminated in Brazil, this study explored the genetic diversity in field populations of the pathogen from production areas in the Distrito Federal and the States of Bahia, Minas Gerais, and Rio Grande do Norte. Resistance to demethylation inhibitor (DMI) fungicides was also examined. For 162 isolates from 10 banana growing regions, analysis of mating type idiomorph frequency was conducted, together with estimation of genetic diversity at 15 microsatellite loci. A total of 149 haplotypes were identified across the examined populations, with an average genetic diversity of 4.06. In general, populations displayed 1:1 proportions of idiomorphs MAT1-1 and MAT1-2, providing evidence for sexual recombination. Multilocus linkage disequilibrium also indicated asexual reproduction contributing to the genetic structure of certain populations. AMOVA revealed that 86.3% of the genetic differentiation of the pathogen occurred among isolates within populations. Discriminant Analysis of Principal Components (DAPC) identified six most probable genetic groups, with no population structure associated with geographic origin or collection site. Although genetic similarity was observed among certain populations from different states, data revealed increasing genetic differentiation with increasing geographic distance, as validated by Mantel?s test (r = 0.19, P < 0.001). On the basis of DMI fungicide sensitivity testing and CYP51 gene sequence polymorphism, isolates from the Distrito Federal separated into two main groups, one with generally higher EC50 values against eight DMI fungicides. A clear phenotype-to-genotype relationship was observed for isolates carrying the CYP51 alteration Y461N. Conventionally adopted fungicides for control of Sigatoka leaf spot are likely to be overcome by combined sexual and asexual reproduction mechanisms in P. musae driving genetic variability. Continued analysis of pathogen genetic diversity and monitoring of DMI sensitivity profiles of Brazilian field populations is essential for the development of integrated control strategies based on host resistance breeding and rational design of fungicide regimes. MenosPseudocercospora musae, causal agent of Sigatoka leaf spot, or yellow Sigatoka disease, is considered a major pathogen of banana (Musa spp.). Widely disseminated in Brazil, this study explored the genetic diversity in field populations of the pathogen from production areas in the Distrito Federal and the States of Bahia, Minas Gerais, and Rio Grande do Norte. Resistance to demethylation inhibitor (DMI) fungicides was also examined. For 162 isolates from 10 banana growing regions, analysis of mating type idiomorph frequency was conducted, together with estimation of genetic diversity at 15 microsatellite loci. A total of 149 haplotypes were identified across the examined populations, with an average genetic diversity of 4.06. In general, populations displayed 1:1 proportions of idiomorphs MAT1-1 and MAT1-2, providing evidence for sexual recombination. Multilocus linkage disequilibrium also indicated asexual reproduction contributing to the genetic structure of certain populations. AMOVA revealed that 86.3% of the genetic differentiation of the pathogen occurred among isolates within populations. Discriminant Analysis of Principal Components (DAPC) identified six most probable genetic groups, with no population structure associated with geographic origin or collection site. Although genetic similarity was observed among certain populations from different states, data revealed increasing genetic differentiation with increasing geographic distance, as validated by Mantel?s test ... Mostrar Tudo |
|
Thesagro: |
Banana; Sigatoka Negra. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 03118naa a2200277 a 4500
001 2122242
005 2020-06-02
008 2020 bl uuuu u00u1 u #d
022 $a1664-302X
024 7 $a10.3389/fmicb.2020.00099$2DOI
100 1 $aBRITO, F. S. D.
245 $aGenetic Diversity and Azole fungicide sensitivity in pseudocercospora musae field populations in Brazil.$h[electronic resource]
260 $c2020
520 $aPseudocercospora musae, causal agent of Sigatoka leaf spot, or yellow Sigatoka disease, is considered a major pathogen of banana (Musa spp.). Widely disseminated in Brazil, this study explored the genetic diversity in field populations of the pathogen from production areas in the Distrito Federal and the States of Bahia, Minas Gerais, and Rio Grande do Norte. Resistance to demethylation inhibitor (DMI) fungicides was also examined. For 162 isolates from 10 banana growing regions, analysis of mating type idiomorph frequency was conducted, together with estimation of genetic diversity at 15 microsatellite loci. A total of 149 haplotypes were identified across the examined populations, with an average genetic diversity of 4.06. In general, populations displayed 1:1 proportions of idiomorphs MAT1-1 and MAT1-2, providing evidence for sexual recombination. Multilocus linkage disequilibrium also indicated asexual reproduction contributing to the genetic structure of certain populations. AMOVA revealed that 86.3% of the genetic differentiation of the pathogen occurred among isolates within populations. Discriminant Analysis of Principal Components (DAPC) identified six most probable genetic groups, with no population structure associated with geographic origin or collection site. Although genetic similarity was observed among certain populations from different states, data revealed increasing genetic differentiation with increasing geographic distance, as validated by Mantel?s test (r = 0.19, P < 0.001). On the basis of DMI fungicide sensitivity testing and CYP51 gene sequence polymorphism, isolates from the Distrito Federal separated into two main groups, one with generally higher EC50 values against eight DMI fungicides. A clear phenotype-to-genotype relationship was observed for isolates carrying the CYP51 alteration Y461N. Conventionally adopted fungicides for control of Sigatoka leaf spot are likely to be overcome by combined sexual and asexual reproduction mechanisms in P. musae driving genetic variability. Continued analysis of pathogen genetic diversity and monitoring of DMI sensitivity profiles of Brazilian field populations is essential for the development of integrated control strategies based on host resistance breeding and rational design of fungicide regimes.
650 $aBanana
650 $aSigatoka Negra
700 1 $aSANTOS, J. R. P.
700 1 $aAZEVEDO, V. C. R.
700 1 $aPEIXOUTO, Y. S.
700 1 $aOLIVEIRA, S. A. S. de
700 1 $aFERREIRA, C. F.
700 1 $aHADDAD, F.
700 1 $aAMORIM, E. P.
700 1 $aFRAAIJE, B.
700 1 $aMILLER, R. N. G.
773 $tFrontiers in Microbiology, v, 11$gn.99, 2020.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Trigo. |
|
Data corrente: |
21/01/2022 |
|
Data da última atualização: |
25/01/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
B - 2 |
|
Autoria: |
STEMPKOWSKI, L. A.; MAR, T. B.; PEREIRA, F. S.; SANTOS, A. K. A.; VALENTE, J. B.; LAU, D.; CASA, R. T.; SILVA, F. N. da. |
|
Afiliação: |
LUCAS ANTONIO STEMPKOWSKI, UFV; TALITA BERNARDON MAR; FERNANDO SARTORI PEREIRA, UDESC/Lages; ANA KAROLINY ALVES SANTOS, UDESC/Lages; JULIANA BORBA VALENTE, UDESC/Lages; DOUGLAS LAU, CNPT; RICARDO TREZZI CASA, UDESC/Lages; FÁBIO NASCIMENTO DA SILVA, UDESC/Lages. |
|
Título: |
Viroses em trigo no Brasil: uma visão histórica. |
|
Ano de publicação: |
2022 |
|
Fonte/Imprenta: |
Revisão Anual de Patologia de Plantas, v. 28, p. 102-135, 2022. |
|
DOI: |
10.31976/0104-038321v280005 |
|
Idioma: |
Português |
|
Conteúdo: |
Abstract: Wheat was introduced in Brazil with the arrival of European settlers. For a long time, it was cultivated on a smaller scale until, in the 1960s-1970s, changes in the economic-technological situation resulted in a significant increase in the cultivated area. During this period, there was also an increase in the importance of several phytosanitary problems. The 1960s-1970s mark the first scientific records describing viruses as pathogens of this culture in the country. The history of knowledge about viruses in wheat in Brazil has as important elements: (i) changes in the production systems and in the agricultural landscape; (ii) new technologies and tools for the study of viruses; and (iii) introductions of viruses and their vectors in the national territory. Resumo: O trigo foi introduzido no Brasil com a chegada dos colonizadores europeus. Por muito tempo, foi cultivado em menor escala, até que nos anos 1960-1970 mudanças na conjuntura econômica-tecnológica resultaram em um significativo aumento de sua área cultivada. Nesse período também houve um aumento da importância de vários problemas fitossanitários. As décadas de 1960-1970 marcam os primeiros registros científicos de descrição de vírus como patógenos dessa cultura no país. A história do conhecimento sobre viroses que infectam trigo no Brasil tem como elementos importantes: (i) as mudanças nos sistemas de produção e da paisagem agrícola; (ii) as novas tecnologias e ferramentas para estudo de vírus; e (iii) as introduções de vírus e seus vetores em território nacional. MenosAbstract: Wheat was introduced in Brazil with the arrival of European settlers. For a long time, it was cultivated on a smaller scale until, in the 1960s-1970s, changes in the economic-technological situation resulted in a significant increase in the cultivated area. During this period, there was also an increase in the importance of several phytosanitary problems. The 1960s-1970s mark the first scientific records describing viruses as pathogens of this culture in the country. The history of knowledge about viruses in wheat in Brazil has as important elements: (i) changes in the production systems and in the agricultural landscape; (ii) new technologies and tools for the study of viruses; and (iii) introductions of viruses and their vectors in the national territory. Resumo: O trigo foi introduzido no Brasil com a chegada dos colonizadores europeus. Por muito tempo, foi cultivado em menor escala, até que nos anos 1960-1970 mudanças na conjuntura econômica-tecnológica resultaram em um significativo aumento de sua área cultivada. Nesse período também houve um aumento da importância de vários problemas fitossanitários. As décadas de 1960-1970 marcam os primeiros registros científicos de descrição de vírus como patógenos dessa cultura no país. A história do conhecimento sobre viroses que infectam trigo no Brasil tem como elementos importantes: (i) as mudanças nos sistemas de produção e da paisagem agrícola; (ii) as novas tecnologias e ferramentas para estudo de vírus; e (iii) as... Mostrar Tudo |
|
Palavras-Chave: |
Beny-viridae; Brazilian wheat spike virus; Vírus da espiga de trigo brasileiro; Vírus do anão amarelo da cevada; Wheat stripe mosaic virus. |
|
Thesagro: |
Mosaico; Trigo; Vírus. |
|
Thesaurus NAL: |
Barley yellow dwarf virus; Luteoviridae; Potyviridae; Tenuivirus; Wheat streak mosaic virus. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/230443/1/RAPP-Viroses.pdf
|
|
Marc: |
LEADER 02662naa a2200373 a 4500
001 2139245
005 2022-01-25
008 2022 bl uuuu u00u1 u #d
024 7 $a10.31976/0104-038321v280005$2DOI
100 1 $aSTEMPKOWSKI, L. A.
245 $aViroses em trigo no Brasil$buma visão histórica.$h[electronic resource]
260 $c2022
520 $aAbstract: Wheat was introduced in Brazil with the arrival of European settlers. For a long time, it was cultivated on a smaller scale until, in the 1960s-1970s, changes in the economic-technological situation resulted in a significant increase in the cultivated area. During this period, there was also an increase in the importance of several phytosanitary problems. The 1960s-1970s mark the first scientific records describing viruses as pathogens of this culture in the country. The history of knowledge about viruses in wheat in Brazil has as important elements: (i) changes in the production systems and in the agricultural landscape; (ii) new technologies and tools for the study of viruses; and (iii) introductions of viruses and their vectors in the national territory. Resumo: O trigo foi introduzido no Brasil com a chegada dos colonizadores europeus. Por muito tempo, foi cultivado em menor escala, até que nos anos 1960-1970 mudanças na conjuntura econômica-tecnológica resultaram em um significativo aumento de sua área cultivada. Nesse período também houve um aumento da importância de vários problemas fitossanitários. As décadas de 1960-1970 marcam os primeiros registros científicos de descrição de vírus como patógenos dessa cultura no país. A história do conhecimento sobre viroses que infectam trigo no Brasil tem como elementos importantes: (i) as mudanças nos sistemas de produção e da paisagem agrícola; (ii) as novas tecnologias e ferramentas para estudo de vírus; e (iii) as introduções de vírus e seus vetores em território nacional.
650 $aBarley yellow dwarf virus
650 $aLuteoviridae
650 $aPotyviridae
650 $aTenuivirus
650 $aWheat streak mosaic virus
650 $aMosaico
650 $aTrigo
650 $aVírus
653 $aBeny-viridae
653 $aBrazilian wheat spike virus
653 $aVírus da espiga de trigo brasileiro
653 $aVírus do anão amarelo da cevada
653 $aWheat stripe mosaic virus
700 1 $aMAR, T. B.
700 1 $aPEREIRA, F. S.
700 1 $aSANTOS, A. K. A.
700 1 $aVALENTE, J. B.
700 1 $aLAU, D.
700 1 $aCASA, R. T.
700 1 $aSILVA, F. N. da
773 $tRevisão Anual de Patologia de Plantas$gv. 28, p. 102-135, 2022.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Trigo (CNPT) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
