Prevention and Detection of Fungicide Resistance Development in Rhizoctonia zeae from Soybean and Corn in Nebraska
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1094/PHP-11-20-0100-SYN http://hdl.handle.net/11449/223371 |
Resumo: | Thegoalofthisresearch was to advance the foundational knowledge required to quantify and mitigate fungicide resistance in Rhizoctonia zeae, the seedling disease pathogen ofsoybean and corn. In vitro sensitivity to azoxystrobin, fludioxonil, sedaxane, and/or prothioconazole was determined for 91 R. zeae isolates obtained mostly from soybean and corn fields in Nebraska. Isolates were sensitive to flu-dioxonil, sedaxane, and prothioconazole (EC50 <3 µg/ml) and had a positively skewed EC50 distribution. Isolates were not sensitive to azoxystrobin in vitro (EC50 > 100 µg/ml) or in planta. Application of azoxystrobin did not significantly decrease disease severity or improve total dry weight of the soybean plants (P > 0.05). The risk of resistance developmentin R. zeae was estimated by characterizing its population structure. Eighty-one R. zeae isolates were genotyped using six microsatellite markers. Results showed that the population has a mixed mode of reproduction and is structured according to geographic region, suggesting limited dispersal. These population characteristics suggest that R. zeae has an intermediate risk of resistance development. Overall, this research establishedthecurrent status of fungicide sensitivity in R. zeae in Nebraska and estimated its risk of resistance development, which can inform fungicide resistance management for R. zeae. |
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Prevention and Detection of Fungicide Resistance Development in Rhizoctonia zeae from Soybean and Corn in NebraskaAzoxystrobinFludioxonilFungicide resistance managementFungicide sensitivityGlycine maxPopulation structureProthioconazoleRisk of resistance developmentSedaxaneZea maysThegoalofthisresearch was to advance the foundational knowledge required to quantify and mitigate fungicide resistance in Rhizoctonia zeae, the seedling disease pathogen ofsoybean and corn. In vitro sensitivity to azoxystrobin, fludioxonil, sedaxane, and/or prothioconazole was determined for 91 R. zeae isolates obtained mostly from soybean and corn fields in Nebraska. Isolates were sensitive to flu-dioxonil, sedaxane, and prothioconazole (EC50 <3 µg/ml) and had a positively skewed EC50 distribution. Isolates were not sensitive to azoxystrobin in vitro (EC50 > 100 µg/ml) or in planta. Application of azoxystrobin did not significantly decrease disease severity or improve total dry weight of the soybean plants (P > 0.05). The risk of resistance developmentin R. zeae was estimated by characterizing its population structure. Eighty-one R. zeae isolates were genotyped using six microsatellite markers. Results showed that the population has a mixed mode of reproduction and is structured according to geographic region, suggesting limited dispersal. These population characteristics suggest that R. zeae has an intermediate risk of resistance development. Overall, this research establishedthecurrent status of fungicide sensitivity in R. zeae in Nebraska and estimated its risk of resistance development, which can inform fungicide resistance management for R. zeae.Department of Plant Pathology University of NebraskaWest Central Research and Extension Center University of NebraskaDepartment of Entomology and Plant Pathology University of TennesseeDepartment of Plant Protection Sao Paulo State UniversityDepartment of Plant and Earth Science University of WisconsinDepartment of Plant Pathology University of KentuckyDepartment of Plant Protection Sao Paulo State UniversityUniversity of NebraskaUniversity of TennesseeUniversidade Estadual Paulista (UNESP)University of WisconsinUniversity of KentuckyGambhir, NikitaKodati, SrikanthHuff, MatthewSilva, Flavio [UNESP]Ajayi-Oyetunde, OlutoyosiStaton, MargaretBradley, CarlAdesemoye, Anthony O.Everhart, Sydney E.2022-04-28T19:50:14Z2022-04-28T19:50:14Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article465-469http://dx.doi.org/10.1094/PHP-11-20-0100-SYNPlant Health Progress, v. 22, n. 4, p. 465-469, 2021.1535-1025http://hdl.handle.net/11449/22337110.1094/PHP-11-20-0100-SYN2-s2.0-85123802690Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPlant Health Progressinfo:eu-repo/semantics/openAccess2022-04-28T19:50:14Zoai:repositorio.unesp.br:11449/223371Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:48:30.391380Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Prevention and Detection of Fungicide Resistance Development in Rhizoctonia zeae from Soybean and Corn in Nebraska |
title |
Prevention and Detection of Fungicide Resistance Development in Rhizoctonia zeae from Soybean and Corn in Nebraska |
spellingShingle |
Prevention and Detection of Fungicide Resistance Development in Rhizoctonia zeae from Soybean and Corn in Nebraska Gambhir, Nikita Azoxystrobin Fludioxonil Fungicide resistance management Fungicide sensitivity Glycine max Population structure Prothioconazole Risk of resistance development Sedaxane Zea mays |
title_short |
Prevention and Detection of Fungicide Resistance Development in Rhizoctonia zeae from Soybean and Corn in Nebraska |
title_full |
Prevention and Detection of Fungicide Resistance Development in Rhizoctonia zeae from Soybean and Corn in Nebraska |
title_fullStr |
Prevention and Detection of Fungicide Resistance Development in Rhizoctonia zeae from Soybean and Corn in Nebraska |
title_full_unstemmed |
Prevention and Detection of Fungicide Resistance Development in Rhizoctonia zeae from Soybean and Corn in Nebraska |
title_sort |
Prevention and Detection of Fungicide Resistance Development in Rhizoctonia zeae from Soybean and Corn in Nebraska |
author |
Gambhir, Nikita |
author_facet |
Gambhir, Nikita Kodati, Srikanth Huff, Matthew Silva, Flavio [UNESP] Ajayi-Oyetunde, Olutoyosi Staton, Margaret Bradley, Carl Adesemoye, Anthony O. Everhart, Sydney E. |
author_role |
author |
author2 |
Kodati, Srikanth Huff, Matthew Silva, Flavio [UNESP] Ajayi-Oyetunde, Olutoyosi Staton, Margaret Bradley, Carl Adesemoye, Anthony O. Everhart, Sydney E. |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
University of Nebraska University of Tennessee Universidade Estadual Paulista (UNESP) University of Wisconsin University of Kentucky |
dc.contributor.author.fl_str_mv |
Gambhir, Nikita Kodati, Srikanth Huff, Matthew Silva, Flavio [UNESP] Ajayi-Oyetunde, Olutoyosi Staton, Margaret Bradley, Carl Adesemoye, Anthony O. Everhart, Sydney E. |
dc.subject.por.fl_str_mv |
Azoxystrobin Fludioxonil Fungicide resistance management Fungicide sensitivity Glycine max Population structure Prothioconazole Risk of resistance development Sedaxane Zea mays |
topic |
Azoxystrobin Fludioxonil Fungicide resistance management Fungicide sensitivity Glycine max Population structure Prothioconazole Risk of resistance development Sedaxane Zea mays |
description |
Thegoalofthisresearch was to advance the foundational knowledge required to quantify and mitigate fungicide resistance in Rhizoctonia zeae, the seedling disease pathogen ofsoybean and corn. In vitro sensitivity to azoxystrobin, fludioxonil, sedaxane, and/or prothioconazole was determined for 91 R. zeae isolates obtained mostly from soybean and corn fields in Nebraska. Isolates were sensitive to flu-dioxonil, sedaxane, and prothioconazole (EC50 <3 µg/ml) and had a positively skewed EC50 distribution. Isolates were not sensitive to azoxystrobin in vitro (EC50 > 100 µg/ml) or in planta. Application of azoxystrobin did not significantly decrease disease severity or improve total dry weight of the soybean plants (P > 0.05). The risk of resistance developmentin R. zeae was estimated by characterizing its population structure. Eighty-one R. zeae isolates were genotyped using six microsatellite markers. Results showed that the population has a mixed mode of reproduction and is structured according to geographic region, suggesting limited dispersal. These population characteristics suggest that R. zeae has an intermediate risk of resistance development. Overall, this research establishedthecurrent status of fungicide sensitivity in R. zeae in Nebraska and estimated its risk of resistance development, which can inform fungicide resistance management for R. zeae. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 2022-04-28T19:50:14Z 2022-04-28T19:50:14Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1094/PHP-11-20-0100-SYN Plant Health Progress, v. 22, n. 4, p. 465-469, 2021. 1535-1025 http://hdl.handle.net/11449/223371 10.1094/PHP-11-20-0100-SYN 2-s2.0-85123802690 |
url |
http://dx.doi.org/10.1094/PHP-11-20-0100-SYN http://hdl.handle.net/11449/223371 |
identifier_str_mv |
Plant Health Progress, v. 22, n. 4, p. 465-469, 2021. 1535-1025 10.1094/PHP-11-20-0100-SYN 2-s2.0-85123802690 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Plant Health Progress |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
465-469 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129463892836352 |