Sensibilidade de stenocarpella macrospora a fungicidas
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.seer.ufu.br/index.php/biosciencejournal/article/view/15022 http://hdl.handle.net/11449/75893 |
Resumo: | The application of fungicides in the aerial organs is control strategy to macrospora spot caused by fungus Stenocarpella macrospora. The objective of this study was to determine the sensitivity of S. macrospora to fungicides by inhibition of mycelial growth (MG) and conidial germination (CG). It was eval uated 12 fungicides belonging to the chemical groups of the benzimidazoles, triazoles and strobilurins, six concentrations and two isolates of the fungus (SC and MT). The fungicides were diluted in sterile distilled water and added to the culture medium of potato dextrose agar (mycelium) and water-agar (spore) after sterilization. The percentage of inhibition of MC and CG was calculed in comparison with control, estimating of 50% inhibitory concentration (IC50). The fungicides tested were effective in inhibiting the MC. The IC50 was less than 1 ppm for all fungicides. There was no difference between isolates. The inhibition of CG had higher fungitoxicity strobilurins, and the IC50 was between 0.0035 and 0.03 ppm, and the isolated SC showed the higher sensitivity to the fungicides. The IC50 values obtained for fungicides and specific S. macrospora will be useful in monitoring the sensitivity of the fungus, especially in regions with intense demand for fungicides in corn. |
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Sensibilidade de stenocarpella macrospora a fungicidasSensibility of stenocarpella macrospora to fungicideDiplodiaFungitoxicityMacrospora spotZea maysThe application of fungicides in the aerial organs is control strategy to macrospora spot caused by fungus Stenocarpella macrospora. The objective of this study was to determine the sensitivity of S. macrospora to fungicides by inhibition of mycelial growth (MG) and conidial germination (CG). It was eval uated 12 fungicides belonging to the chemical groups of the benzimidazoles, triazoles and strobilurins, six concentrations and two isolates of the fungus (SC and MT). The fungicides were diluted in sterile distilled water and added to the culture medium of potato dextrose agar (mycelium) and water-agar (spore) after sterilization. The percentage of inhibition of MC and CG was calculed in comparison with control, estimating of 50% inhibitory concentration (IC50). The fungicides tested were effective in inhibiting the MC. The IC50 was less than 1 ppm for all fungicides. There was no difference between isolates. The inhibition of CG had higher fungitoxicity strobilurins, and the IC50 was between 0.0035 and 0.03 ppm, and the isolated SC showed the higher sensitivity to the fungicides. The IC50 values obtained for fungicides and specific S. macrospora will be useful in monitoring the sensitivity of the fungus, especially in regions with intense demand for fungicides in corn.A aplicação de fungicidas nos órgãos aéreos é estratégia de controle para mancha-de-macrospora causada pelo fungo Stenocarpella macrospora. O objetivo do trabalho foi determinar a sensibilidade de S. macrospora a fungicidas pela inibição do crescimento do micélio (CM) e germinação de conídios (GC). Foram avaliados 12 fungicidas pertencentes aos grupos químicos dos benzimidazóis, estrobilurinas e triazóis, seis concentrações e dois isolados do fungo (SC e MT). Os fungicidas foram diluídos em água destilada e esterilizada e adicionados ao meio de cultura de batata-dextrose-ágar (micélio) e ágar-água (conídios) após a esterilização. A porcentagem de inibição do CM e GC foi calculada em relação à testemunha, estimando-se valores de concentração inibitória de 50% (CI50). Constatou-se que os fungicidas testados foram altamente fungitóxicos na inibição do CM, sendo que a CI50 foi menor que 1 ppm para todos os fungicidas, não havendo diferença entre isolados. Na inibição da GC, as estrobilurinas apresentaram maior fungitoxicidade, pois a CI50 ficou entre 0,0035 e 0,03 ppm, sendo o isolado SC mais sensível aos fungicidas. Os valores de CI50 para os diferentes fungicidas específicos para S. macrospora são úteis no monitoramento da sensibilidade do fungo em regiões com demanda intensa de fungicidas no milho.Universidade Estadual Paulista Júlio de Mesquita Filho UNESP, Botucatu, SPUniversidade do Estado de Santa Catarina - UDESC, Lages, SCEmpresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - EPAGRI, Chapecó, SCUniversidade Regional Integrada - URI, Erechim, RSEscola Superior de Agricultura Luiz de Queiroz ESALQ, Piracicaba, SPUniversidade Estadual Paulista Júlio de Mesquita Filho UNESP, Botucatu, SPUniversidade Estadual Paulista (Unesp)Universidade do Estado de Santa Catarina (UDESC)Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (EPAGRI)Universidade Regional Integrada - URIUniversidade de São Paulo (USP)Bampi, Daiana [UNESP]Casa, Ricardo TrezziWordell Filho, João AméricoBlum, Marta Maria Casade Camargo, Meyriele Pires2014-05-27T11:29:54Z2014-05-27T11:29:54Z2013-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article787-795application/pdfhttp://www.seer.ufu.br/index.php/biosciencejournal/article/view/15022Bioscience Journal, v. 29, n. 4, p. 787-795, 2013.1516-37251981-3163http://hdl.handle.net/11449/75893WOS:0003235519000012-s2.0-848832396062-s2.0-84883239606.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengporBioscience Journal0.4040,303info:eu-repo/semantics/openAccess2023-12-11T06:14:02Zoai:repositorio.unesp.br:11449/75893Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-11T06:14:02Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Sensibilidade de stenocarpella macrospora a fungicidas Sensibility of stenocarpella macrospora to fungicide |
title |
Sensibilidade de stenocarpella macrospora a fungicidas |
spellingShingle |
Sensibilidade de stenocarpella macrospora a fungicidas Bampi, Daiana [UNESP] Diplodia Fungitoxicity Macrospora spot Zea mays |
title_short |
Sensibilidade de stenocarpella macrospora a fungicidas |
title_full |
Sensibilidade de stenocarpella macrospora a fungicidas |
title_fullStr |
Sensibilidade de stenocarpella macrospora a fungicidas |
title_full_unstemmed |
Sensibilidade de stenocarpella macrospora a fungicidas |
title_sort |
Sensibilidade de stenocarpella macrospora a fungicidas |
author |
Bampi, Daiana [UNESP] |
author_facet |
Bampi, Daiana [UNESP] Casa, Ricardo Trezzi Wordell Filho, João Américo Blum, Marta Maria Casa de Camargo, Meyriele Pires |
author_role |
author |
author2 |
Casa, Ricardo Trezzi Wordell Filho, João Américo Blum, Marta Maria Casa de Camargo, Meyriele Pires |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade do Estado de Santa Catarina (UDESC) Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (EPAGRI) Universidade Regional Integrada - URI Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Bampi, Daiana [UNESP] Casa, Ricardo Trezzi Wordell Filho, João Américo Blum, Marta Maria Casa de Camargo, Meyriele Pires |
dc.subject.por.fl_str_mv |
Diplodia Fungitoxicity Macrospora spot Zea mays |
topic |
Diplodia Fungitoxicity Macrospora spot Zea mays |
description |
The application of fungicides in the aerial organs is control strategy to macrospora spot caused by fungus Stenocarpella macrospora. The objective of this study was to determine the sensitivity of S. macrospora to fungicides by inhibition of mycelial growth (MG) and conidial germination (CG). It was eval uated 12 fungicides belonging to the chemical groups of the benzimidazoles, triazoles and strobilurins, six concentrations and two isolates of the fungus (SC and MT). The fungicides were diluted in sterile distilled water and added to the culture medium of potato dextrose agar (mycelium) and water-agar (spore) after sterilization. The percentage of inhibition of MC and CG was calculed in comparison with control, estimating of 50% inhibitory concentration (IC50). The fungicides tested were effective in inhibiting the MC. The IC50 was less than 1 ppm for all fungicides. There was no difference between isolates. The inhibition of CG had higher fungitoxicity strobilurins, and the IC50 was between 0.0035 and 0.03 ppm, and the isolated SC showed the higher sensitivity to the fungicides. The IC50 values obtained for fungicides and specific S. macrospora will be useful in monitoring the sensitivity of the fungus, especially in regions with intense demand for fungicides in corn. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-07-01 2014-05-27T11:29:54Z 2014-05-27T11:29:54Z |
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://www.seer.ufu.br/index.php/biosciencejournal/article/view/15022 Bioscience Journal, v. 29, n. 4, p. 787-795, 2013. 1516-3725 1981-3163 http://hdl.handle.net/11449/75893 WOS:000323551900001 2-s2.0-84883239606 2-s2.0-84883239606.pdf |
url |
http://www.seer.ufu.br/index.php/biosciencejournal/article/view/15022 http://hdl.handle.net/11449/75893 |
identifier_str_mv |
Bioscience Journal, v. 29, n. 4, p. 787-795, 2013. 1516-3725 1981-3163 WOS:000323551900001 2-s2.0-84883239606 2-s2.0-84883239606.pdf |
dc.language.iso.fl_str_mv |
eng por |
language |
eng por |
dc.relation.none.fl_str_mv |
Bioscience Journal 0.404 0,303 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
787-795 application/pdf |
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 |
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1797789968091840512 |