Rhizoctonia solani AG-1 IA infects both rice and signalgrass in the Colombian Llanos

Detalhes bibliográficos
Autor(a) principal: Ramos-Molina, Lina Maria
Data de Publicação: 2016
Outros Autores: Chavarro-Mesa, Edisson, Pereira, Danilo Augusto dos Santos, Silva-Herrera, María del Rosario, Ceresini, Paulo Cezar
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Tropical (Online)
Texto Completo: https://revistas.ufg.br/pat/article/view/38696
Resumo: Foliar blight and death of signalgrass (Urochloa spp.) pastures are caused by the Rhizoctonia solani fungus. This study aimed at determining which pathogens from the Rhizoctonia species complex are associated with leaf and sheath blight in Urochloa and rice, in the Colombian Llanos. Sympatric areas of Urochloa pastures adjacent to rice cropping areas were sampled using a linear transect system. The pathogens were identified using morphological traits, molecular detection based on specific primers and sequencing of the ITS-5.8S rDNA region. R. solani AG-1 IA predominated as the pathogen associated with foliar blight in all samples from U. brizantha cv. ‘Toledo’ and hybrid Urochloa cv. ‘Mulato’. Besides R. solani AG-1 IA (18 % of the samples), Rhizoctonia oryzae-sativae (71 %) and Sclerotium hydrophilum (11 %) were also detected. In the cross-pathogenicity test, the R. solani AG-1 IA fungus was the most aggressive to Urochloa, while R. oryzae-sativae produced very mild infection symptoms. This is the first report of R. oryzae-sativae and S. hydrophilum associated with the complex of rice sheath blight diseases in Colombia.
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spelling Rhizoctonia solani AG-1 IA infects both rice and signalgrass in the Colombian LlanosRhizoctonia solani AG-1 IA infecta arroz e braquiária nos Llanos ColombianosUrochloa spp.Rhizoctonia oryzae-sativaeSclerotium hydrophilum.Urochloa spp.Rhizoctonia oryzae-sativaeSclerotium hydrophilum.Foliar blight and death of signalgrass (Urochloa spp.) pastures are caused by the Rhizoctonia solani fungus. This study aimed at determining which pathogens from the Rhizoctonia species complex are associated with leaf and sheath blight in Urochloa and rice, in the Colombian Llanos. Sympatric areas of Urochloa pastures adjacent to rice cropping areas were sampled using a linear transect system. The pathogens were identified using morphological traits, molecular detection based on specific primers and sequencing of the ITS-5.8S rDNA region. R. solani AG-1 IA predominated as the pathogen associated with foliar blight in all samples from U. brizantha cv. ‘Toledo’ and hybrid Urochloa cv. ‘Mulato’. Besides R. solani AG-1 IA (18 % of the samples), Rhizoctonia oryzae-sativae (71 %) and Sclerotium hydrophilum (11 %) were also detected. In the cross-pathogenicity test, the R. solani AG-1 IA fungus was the most aggressive to Urochloa, while R. oryzae-sativae produced very mild infection symptoms. This is the first report of R. oryzae-sativae and S. hydrophilum associated with the complex of rice sheath blight diseases in Colombia.A queima da folha e morte de pastagens do gênero Urochloa são causadas pelo fungo Rhizoctonia solani. Objetivou-se determinar que patógenos do complexo de espécies do gênero Rhizoctonia estão associados à queima da folha e bainha em Urochloa e arroz, nos Llanos Colombianos. Utilizando-se o sistema de transcetos lineares, foram amostradas áreas de pastagens de Urochloa simpátricas, adjacentes às de arroz. A identificação dos patógenos foi efetuada por caracterização morfológica, detecção molecular baseada em iniciadores específicos e sequenciamento da região ITS-5,8S do rDNA. R. solani AG-1 IA predominou como patógeno associado à queima da folha em todas as amostras de U. brizantha cv. ‘Toledo’ e híbrido Urochloa cv. ‘Mulato’. Além de R. solani AG-1 IA (18 % das amostras), R. oryzae-sativae (71 %) e Sclerotium hydrophilum (11 %) também foram detectados. No teste de patogenicidade, o fungo R. solani AG-1 IA foi o mais agressivo a Urochloa, enquanto R. oryzae-sativae ocasionou sintomas muito leves de infecção. Este é o primeiro relato de que os fungos R. oryzae-sativae e S. hydrophilum estão associados ao complexo de doenças da bainha do arroz, na Colômbia.Escola de Agronomia - Universidade Federal de Goiás2016-04-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/38696Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 46, n. 1, Jan./Mar. 2016; 65-71Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 46, n. 1, jan./mar. 2016; 65-71Pesquisa Agropecuária Tropical; v. 46, n. 1, jan./mar. 2016; 65-711983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/38696/20832Ramos-Molina, Lina MariaChavarro-Mesa, EdissonPereira, Danilo Augusto dos SantosSilva-Herrera, María del RosarioCeresini, Paulo Cezarinfo:eu-repo/semantics/openAccess2020-07-13T17:47:59Zoai:ojs.revistas.ufg.br:article/38696Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:11.145053Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true
dc.title.none.fl_str_mv Rhizoctonia solani AG-1 IA infects both rice and signalgrass in the Colombian Llanos
Rhizoctonia solani AG-1 IA infecta arroz e braquiária nos Llanos Colombianos
title Rhizoctonia solani AG-1 IA infects both rice and signalgrass in the Colombian Llanos
spellingShingle Rhizoctonia solani AG-1 IA infects both rice and signalgrass in the Colombian Llanos
Ramos-Molina, Lina Maria
Urochloa spp.
Rhizoctonia oryzae-sativae
Sclerotium hydrophilum.
Urochloa spp.
Rhizoctonia oryzae-sativae
Sclerotium hydrophilum.
title_short Rhizoctonia solani AG-1 IA infects both rice and signalgrass in the Colombian Llanos
title_full Rhizoctonia solani AG-1 IA infects both rice and signalgrass in the Colombian Llanos
title_fullStr Rhizoctonia solani AG-1 IA infects both rice and signalgrass in the Colombian Llanos
title_full_unstemmed Rhizoctonia solani AG-1 IA infects both rice and signalgrass in the Colombian Llanos
title_sort Rhizoctonia solani AG-1 IA infects both rice and signalgrass in the Colombian Llanos
author Ramos-Molina, Lina Maria
author_facet Ramos-Molina, Lina Maria
Chavarro-Mesa, Edisson
Pereira, Danilo Augusto dos Santos
Silva-Herrera, María del Rosario
Ceresini, Paulo Cezar
author_role author
author2 Chavarro-Mesa, Edisson
Pereira, Danilo Augusto dos Santos
Silva-Herrera, María del Rosario
Ceresini, Paulo Cezar
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Ramos-Molina, Lina Maria
Chavarro-Mesa, Edisson
Pereira, Danilo Augusto dos Santos
Silva-Herrera, María del Rosario
Ceresini, Paulo Cezar
dc.subject.por.fl_str_mv Urochloa spp.
Rhizoctonia oryzae-sativae
Sclerotium hydrophilum.
Urochloa spp.
Rhizoctonia oryzae-sativae
Sclerotium hydrophilum.
topic Urochloa spp.
Rhizoctonia oryzae-sativae
Sclerotium hydrophilum.
Urochloa spp.
Rhizoctonia oryzae-sativae
Sclerotium hydrophilum.
description Foliar blight and death of signalgrass (Urochloa spp.) pastures are caused by the Rhizoctonia solani fungus. This study aimed at determining which pathogens from the Rhizoctonia species complex are associated with leaf and sheath blight in Urochloa and rice, in the Colombian Llanos. Sympatric areas of Urochloa pastures adjacent to rice cropping areas were sampled using a linear transect system. The pathogens were identified using morphological traits, molecular detection based on specific primers and sequencing of the ITS-5.8S rDNA region. R. solani AG-1 IA predominated as the pathogen associated with foliar blight in all samples from U. brizantha cv. ‘Toledo’ and hybrid Urochloa cv. ‘Mulato’. Besides R. solani AG-1 IA (18 % of the samples), Rhizoctonia oryzae-sativae (71 %) and Sclerotium hydrophilum (11 %) were also detected. In the cross-pathogenicity test, the R. solani AG-1 IA fungus was the most aggressive to Urochloa, while R. oryzae-sativae produced very mild infection symptoms. This is the first report of R. oryzae-sativae and S. hydrophilum associated with the complex of rice sheath blight diseases in Colombia.
publishDate 2016
dc.date.none.fl_str_mv 2016-04-12
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Avaliado por pares
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufg.br/pat/article/view/38696
url https://revistas.ufg.br/pat/article/view/38696
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revistas.ufg.br/pat/article/view/38696/20832
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
dc.source.none.fl_str_mv Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 46, n. 1, Jan./Mar. 2016; 65-71
Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 46, n. 1, jan./mar. 2016; 65-71
Pesquisa Agropecuária Tropical; v. 46, n. 1, jan./mar. 2016; 65-71
1983-4063
reponame:Pesquisa Agropecuária Tropical (Online)
instname:Universidade Federal de Goiás (UFG)
instacron:UFG
instname_str Universidade Federal de Goiás (UFG)
instacron_str UFG
institution UFG
reponame_str Pesquisa Agropecuária Tropical (Online)
collection Pesquisa Agropecuária Tropical (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)
repository.mail.fl_str_mv aseleguini.pat@gmail.com||mgoes@agro.ufg.br
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