Resistance to QoI fungicides Is widespread in brazilian populations of the wheat blast pathogen magnaporthe oryzae

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dc.contributor.authorCastroagudin, Vanina L. [UNESP]
dc.contributor.authorCeresini, Paulo C. [UNESP]
dc.contributor.authorOliveira, Samanta C. de [UNESP]
dc.contributor.authorReges, Juliana T. A. [UNESP]
dc.contributor.authorMaciel, Joao L. N.
dc.contributor.authorBonato, Ana L. V.
dc.contributor.authorDorigan, Adriano F. [UNESP]
dc.contributor.authorMcDonald, Bruce A.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionSwiss Fed Inst Technol
dc.date.accessioned2015-10-21T13:08:34Z
dc.date.available2015-10-21T13:08:34Z
dc.date.issued2015-03-01
dc.description.abstractWheat blast, caused by Magnaporthe oryzae, is an important disease across central and southern Brazil. Control has relied mainly on strobilurin fungicides (quinone-outside inhibitors [Qols]). Here, we report the widespread distribution of Qol resistance in M. oryzae populations sampled from wheat fields and poaceous hosts across central and southern Brazil and the evolution of the cytochrome b (cyt b) gene. Sequence analysis of the cyt b gene distinguished nine haplotypes, with four haplotypes carrying the G143A mutation associated with Qol resistance and two haplotypes shared between isolates sampled from wheat and other poaceous hosts. The frequency of the G143A mutation in the wheat-infecting population increased from 36% in 2005 to 90% in 2012. The G143A mutation was found in many different nuclear genetic backgrounds of M. oryzae. Our findings indicate an urgent need to reexamine the use of strobilurins to manage fungal wheat diseases in Brazil.en
dc.description.affiliationUNESP Univ Sao Paulo State, Ilha Solteira, SP, Brazil
dc.description.affiliationEmpresa Brasileira Pesquisa Agr EMBRAPA Trigo Whe, Passo Fundo, RS, Brazil
dc.description.affiliationSwiss Fed Inst Technol, Inst Integrat Biol, Zurich, Switzerland
dc.description.affiliationUnespUNESP Univ Sao Paulo State, Departamento de Fitossanidade, Engenharia Rural e Solos, Ilha Solteira, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipEMBRAPA/Monsanto research grant (Macroprogram II)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2013/10655-4
dc.description.sponsorshipIdCNPq: Pq-2 308394/2009-7
dc.description.sponsorshipIdCNPq: Pq-2 307361/2012-8
dc.description.sponsorshipIdCNPq: 504073/2011-7
dc.description.sponsorshipIdCNPq: 454543/2013-1
dc.description.sponsorshipIdFAPESP: 2013/03116-0
dc.description.sponsorshipIdCNPq: 150490/2013-5
dc.format.extent284-294
dc.identifierhttp://apsjournals.apsnet.org/doi/10.1094/PHYTO-06-14-0184-R
dc.identifier.citationPhytopathology, v. 105, n. 3, p. 284-294, 2015.
dc.identifier.doi10.1094/PHYTO-06-14-0184-R
dc.identifier.issn0031-949X
dc.identifier.lattes2536146103735785
dc.identifier.urihttp://hdl.handle.net/11449/128268
dc.identifier.wosWOS:000349874100001
dc.language.isoeng
dc.publisherAmer Phytopathological Soc
dc.relation.ispartofPhytopathology
dc.relation.ispartofjcr3.036
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleResistance to QoI fungicides Is widespread in brazilian populations of the wheat blast pathogen magnaporthe oryzaeen
dc.typeArtigo
dcterms.rightsHolderAmer Phytopathological Soc
unesp.author.lattes2536146103735785
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt

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Artigos - Fitossanidade, Engenharia Rural e Solos - FEIS