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| Dorigan, Adriano Francis; Carvalho, Giselle de; Poloni, Nadia Maria; Negrisoli, Matheus Mereb; Maciel, João Leodato Nunes; Ceresini, Paulo Cezar. |
| Triazole fungicides have not been effective for managing the wheat blast disease in Brazil. A broad analysis across six geographical populations of Pyricularia graminis-tritici in central-southern Brazil indicated a high level of resistance to triazole fungicides. Since P. graminis-tritici is also associated with others poaceous species, here, we analyzed whether triazole-resistant isolates of the blast pathogen could be recovered from other poaceous hosts that are invasive of sprayed wheat fields. In addition to P. graminis-tritici (Pygt), we also evaluated the levels of sensitivity of three other grass-associated blast pathogens, which included P. grisea (Pg), P. pennisetigena (Pp), and P. urashimae (Pu). Resistance to the triazole fungicides... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Blast disease; CYP51A gene; Sterol demethylation inhibitor (DMI) fungicides; Epoxiconazole; Tebuconazole; Resistência a fungicidas na agricultura / Fungicide resistance in agriculture. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39332 |
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| Cumagun, Christian Joseph Rili; McDonald, Bruce Alan; Arakawa, Masao; Castroagudín, Vanina Lilian; Sebbenn, Alexandre Magno; Ceresini, Paulo Cezar. |
| Sheath blight, caused by the fungal pathogen Rhizoctonia solani AG-1 IA is one of the most important rice diseases worldwide. The objetives of this study was to determine the predominant reproductive system and the genetic structure of 18 rice-infecting populations of R. solani sampled from China, Japan and the Philippines, the most important rice production countries in Asia. Knowledge about the population genetic structure of the pathogen in Asia is useful in identifying sources of infection and formulating sustainable management strategies for rice sheath blight. From a total of 717 isolates, 423 unique multilocus genotypes were detected based on nine microsatellite loci. The three country populations of R. solani AG-1 IA exhibited a mixed reproductive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thanatephorus cucumeris; Microsatellite genotyping; Reproductive system; Gene flow; Migration.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42457 |
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| Dorigan, Adriano Francis; Carvalho, Giselle de; Poloni, Nadia Maria; Negrisoli, Matheus Mereb; Maciel, João Leodato Nunes; Ceresini, Paulo Cezar. |
| Triazole fungicides have not been effective for managing the wheat blast disease in Brazil. A broad analysis across six geographical populations of Pyricularia graminis-tritici in central-southern Brazil indicated a high level of resistance to triazole fungicides. Since P. graminis-tritici is also associated with others poaceous species, here, we analyzed whether triazole-resistant isolates of the blast pathogen could be recovered from other poaceous hosts that are invasive of sprayed wheat fields. In addition to P. graminis-tritici (Pygt), we also evaluated the levels of sensitivity of three other grass-associated blast pathogens, which included P. grisea (Pg), P. pennisetigena (Pp), and P. urashimae (Pu). Resistance to the triazole fungicides... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.02.01-0 blast disease; CYP51A gene; Sterol demethylation inhibitor (DMI) fungicides; Epoxiconazole; Tebuconazole Resistência a fungicidas na agricultura / Fungicide resistance in agriculture. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39332 |
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