In vivo sensitivity of Phakopsora pachyrhizi to DMI and QoI fungicides
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Summa phytopathologica (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-54052015000100021 |
Resumo: | In in vivoexperiments the sensitivity of 18 isolates of Phakopsora pachyrhizifrom several regions of Brazil to IDM fungicides (cyproconazole, epoxiconazole and tebuconazole and an IQE (pyraclostrobin) were evaluated. The assessments were based on leaflet uredia density. Inhibitory concentration (IC50) and sensitivity reduction factor were determined for all fungicide x strain interactions. Tebuconazole sensitivity reduction was detected for most fungus isolates. In contrast, there was no fungicide shift in sensitivity of the fungus to pyraclostrobin. We conclude that the control failure of soybean rust found in some farms is due to the reduced sensitivity of the fungus to the IDM fungicide and that it remains sensitive to pyraclostrobin. |
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In vivo sensitivity of Phakopsora pachyrhizi to DMI and QoI fungicidesSoybean rustfungitoxicityresistancetriazol and strobilurin fungicidesIn in vivoexperiments the sensitivity of 18 isolates of Phakopsora pachyrhizifrom several regions of Brazil to IDM fungicides (cyproconazole, epoxiconazole and tebuconazole and an IQE (pyraclostrobin) were evaluated. The assessments were based on leaflet uredia density. Inhibitory concentration (IC50) and sensitivity reduction factor were determined for all fungicide x strain interactions. Tebuconazole sensitivity reduction was detected for most fungus isolates. In contrast, there was no fungicide shift in sensitivity of the fungus to pyraclostrobin. We conclude that the control failure of soybean rust found in some farms is due to the reduced sensitivity of the fungus to the IDM fungicide and that it remains sensitive to pyraclostrobin.Grupo Paulista de Fitopatologia2015-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-54052015000100021Summa Phytopathologica v.41 n.1 2015reponame:Summa phytopathologica (Online)instname:Grupo Paulista de Fitopatologiainstacron:GPF10.1590/0100-5405/1975info:eu-repo/semantics/openAccessReis,Erlei MeloDeuner,ElaineZanatta,Mateuseng2015-10-07T00:00:00Zoai:scielo:S0100-54052015000100021Revistahttp://www.scielo.br/sphttps://old.scielo.br/oai/scielo-oai.phpsumma@fca.unesp.br1980-54540100-5405opendoar:2015-10-07T00:00Summa phytopathologica (Online) - Grupo Paulista de Fitopatologiafalse |
dc.title.none.fl_str_mv |
In vivo sensitivity of Phakopsora pachyrhizi to DMI and QoI fungicides |
title |
In vivo sensitivity of Phakopsora pachyrhizi to DMI and QoI fungicides |
spellingShingle |
In vivo sensitivity of Phakopsora pachyrhizi to DMI and QoI fungicides Reis,Erlei Melo Soybean rust fungitoxicity resistance triazol and strobilurin fungicides |
title_short |
In vivo sensitivity of Phakopsora pachyrhizi to DMI and QoI fungicides |
title_full |
In vivo sensitivity of Phakopsora pachyrhizi to DMI and QoI fungicides |
title_fullStr |
In vivo sensitivity of Phakopsora pachyrhizi to DMI and QoI fungicides |
title_full_unstemmed |
In vivo sensitivity of Phakopsora pachyrhizi to DMI and QoI fungicides |
title_sort |
In vivo sensitivity of Phakopsora pachyrhizi to DMI and QoI fungicides |
author |
Reis,Erlei Melo |
author_facet |
Reis,Erlei Melo Deuner,Elaine Zanatta,Mateus |
author_role |
author |
author2 |
Deuner,Elaine Zanatta,Mateus |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Reis,Erlei Melo Deuner,Elaine Zanatta,Mateus |
dc.subject.por.fl_str_mv |
Soybean rust fungitoxicity resistance triazol and strobilurin fungicides |
topic |
Soybean rust fungitoxicity resistance triazol and strobilurin fungicides |
description |
In in vivoexperiments the sensitivity of 18 isolates of Phakopsora pachyrhizifrom several regions of Brazil to IDM fungicides (cyproconazole, epoxiconazole and tebuconazole and an IQE (pyraclostrobin) were evaluated. The assessments were based on leaflet uredia density. Inhibitory concentration (IC50) and sensitivity reduction factor were determined for all fungicide x strain interactions. Tebuconazole sensitivity reduction was detected for most fungus isolates. In contrast, there was no fungicide shift in sensitivity of the fungus to pyraclostrobin. We conclude that the control failure of soybean rust found in some farms is due to the reduced sensitivity of the fungus to the IDM fungicide and that it remains sensitive to pyraclostrobin. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-54052015000100021 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-54052015000100021 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0100-5405/1975 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Grupo Paulista de Fitopatologia |
publisher.none.fl_str_mv |
Grupo Paulista de Fitopatologia |
dc.source.none.fl_str_mv |
Summa Phytopathologica v.41 n.1 2015 reponame:Summa phytopathologica (Online) instname:Grupo Paulista de Fitopatologia instacron:GPF |
instname_str |
Grupo Paulista de Fitopatologia |
instacron_str |
GPF |
institution |
GPF |
reponame_str |
Summa phytopathologica (Online) |
collection |
Summa phytopathologica (Online) |
repository.name.fl_str_mv |
Summa phytopathologica (Online) - Grupo Paulista de Fitopatologia |
repository.mail.fl_str_mv |
summa@fca.unesp.br |
_version_ |
1754193418031988736 |