Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditions

Detalhes bibliográficos
Autor(a) principal: Gadaga, Stélio Jorge Castro
Data de Publicação: 2020
Outros Autores: Siqueira, Carolina da Silva, Machado, José da Cruz
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/48079
Resumo: Anthracnose, caused by Colletotrichum lindemuthianum, is one of the main diseases affecting common bean in Brazil, and field losses can reach 100%. Transmission of this pathogen from seeds to seedlings/plants may vary according to environmental conditions and initial inoculum levels, among other factors. The aim of this study was to quantify the transmission rate of C. lindemuthianum, race 65, from infected bean seeds to seedlings/plants under controlled conditions. Seed inoculation was performed by the water conditioning technique in order to obtain seeds with different inoculum potentials as a result of the exposure time of the seeds to the fungus in pure culture, with the potentials denominated P0, P36, P72, P108, and P144. Inoculated and non-inoculated seeds were individually sown and kept in growth chambers under two temperatures, 20 and 26 °C, for a period of 28 days. There was transmission of the pathogen in both asymptomatic and symptomatic plants. The highest total transmission rate (92%) occurred in plants originating from seeds exposed for 144 hours to the fungus at 20 °C.
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spelling Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditionsTransmissão potencial de Colletotrichum lindemuthianum (raça 65) em associação com sementes de feijão sob condições controladasAnthracnose - TransmissionBeans - Diseases and pestsInoculum potentialAntracnose - TransmissãoFeijão - Doenças e pragasPotencial de inóculoAnthracnose, caused by Colletotrichum lindemuthianum, is one of the main diseases affecting common bean in Brazil, and field losses can reach 100%. Transmission of this pathogen from seeds to seedlings/plants may vary according to environmental conditions and initial inoculum levels, among other factors. The aim of this study was to quantify the transmission rate of C. lindemuthianum, race 65, from infected bean seeds to seedlings/plants under controlled conditions. Seed inoculation was performed by the water conditioning technique in order to obtain seeds with different inoculum potentials as a result of the exposure time of the seeds to the fungus in pure culture, with the potentials denominated P0, P36, P72, P108, and P144. Inoculated and non-inoculated seeds were individually sown and kept in growth chambers under two temperatures, 20 and 26 °C, for a period of 28 days. There was transmission of the pathogen in both asymptomatic and symptomatic plants. The highest total transmission rate (92%) occurred in plants originating from seeds exposed for 144 hours to the fungus at 20 °C.A antracnose do feijoeiro, causada por Colletotrichum lindemuthianum, é uma das principais doenças que ocorre no feijoeiro e as perdas podem chegar a 100%. A transmissão deste patógeno de sementes para plântulas/plantas pode variar de acordo com as condições ambientais e nível de inóculo, dentre outros fatores. O objetivo deste trabalho foi quantificar a taxa de transmissão de C. lindemuthianum, raça 65, a partir de sementes de feijão infectadas. A inoculação das sementes foi realizada pela técnica de condicionamento hídrico com o intuito de se obter sementes com diferentes potenciais de inóculo, em função do tempo de exposição das sementes com o fungo em cultura pura, sendo os potenciais denominados: P0, P36, P72, P108 e P144. Sementes não inoculadas e inoculadas foram semeadas individualmente e mantidas em câmaras de crescimento vegetal sob duas temperaturas de crescimento, 20 e 26 °C pelo período de 28 dias. Observou-se que, tanto em plantas assintomáticas, quanto nas sintomáticas, houve transmissão do patógeno. A maior taxa de transmissão total (92%) ocorreu nas plantas originadas a partir de sementes expostas por 144 horas ao fungo e a 20 °C.Associação Brasileira de Tecnologia de Sementes - ABRATES2021-09-08T19:17:31Z2021-09-08T19:17:31Z2020-08info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleGADAGA, S. J. C.; SIQUEIRA, C. da S.; MACHADO, J. da C. Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditions. Journal of Seed Science, Londrina, v. 42, e202042025, 2020. DOI: http://dx.doi.org/10.1590/2317-1545v42231421.http://repositorio.ufla.br/jspui/handle/1/48079Journal of Seed Sciencereponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessGadaga, Stélio Jorge CastroSiqueira, Carolina da SilvaMachado, José da Cruzeng2023-05-26T19:53:16Zoai:localhost:1/48079Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-26T19:53:16Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditions
Transmissão potencial de Colletotrichum lindemuthianum (raça 65) em associação com sementes de feijão sob condições controladas
title Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditions
spellingShingle Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditions
Gadaga, Stélio Jorge Castro
Anthracnose - Transmission
Beans - Diseases and pests
Inoculum potential
Antracnose - Transmissão
Feijão - Doenças e pragas
Potencial de inóculo
title_short Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditions
title_full Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditions
title_fullStr Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditions
title_full_unstemmed Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditions
title_sort Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditions
author Gadaga, Stélio Jorge Castro
author_facet Gadaga, Stélio Jorge Castro
Siqueira, Carolina da Silva
Machado, José da Cruz
author_role author
author2 Siqueira, Carolina da Silva
Machado, José da Cruz
author2_role author
author
dc.contributor.author.fl_str_mv Gadaga, Stélio Jorge Castro
Siqueira, Carolina da Silva
Machado, José da Cruz
dc.subject.por.fl_str_mv Anthracnose - Transmission
Beans - Diseases and pests
Inoculum potential
Antracnose - Transmissão
Feijão - Doenças e pragas
Potencial de inóculo
topic Anthracnose - Transmission
Beans - Diseases and pests
Inoculum potential
Antracnose - Transmissão
Feijão - Doenças e pragas
Potencial de inóculo
description Anthracnose, caused by Colletotrichum lindemuthianum, is one of the main diseases affecting common bean in Brazil, and field losses can reach 100%. Transmission of this pathogen from seeds to seedlings/plants may vary according to environmental conditions and initial inoculum levels, among other factors. The aim of this study was to quantify the transmission rate of C. lindemuthianum, race 65, from infected bean seeds to seedlings/plants under controlled conditions. Seed inoculation was performed by the water conditioning technique in order to obtain seeds with different inoculum potentials as a result of the exposure time of the seeds to the fungus in pure culture, with the potentials denominated P0, P36, P72, P108, and P144. Inoculated and non-inoculated seeds were individually sown and kept in growth chambers under two temperatures, 20 and 26 °C, for a period of 28 days. There was transmission of the pathogen in both asymptomatic and symptomatic plants. The highest total transmission rate (92%) occurred in plants originating from seeds exposed for 144 hours to the fungus at 20 °C.
publishDate 2020
dc.date.none.fl_str_mv 2020-08
2021-09-08T19:17:31Z
2021-09-08T19:17:31Z
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 GADAGA, S. J. C.; SIQUEIRA, C. da S.; MACHADO, J. da C. Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditions. Journal of Seed Science, Londrina, v. 42, e202042025, 2020. DOI: http://dx.doi.org/10.1590/2317-1545v42231421.
http://repositorio.ufla.br/jspui/handle/1/48079
identifier_str_mv GADAGA, S. J. C.; SIQUEIRA, C. da S.; MACHADO, J. da C. Transmission potential of Colletotrichum lindemuthianum (race 65) in association with bean seeds under controlled conditions. Journal of Seed Science, Londrina, v. 42, e202042025, 2020. DOI: http://dx.doi.org/10.1590/2317-1545v42231421.
url http://repositorio.ufla.br/jspui/handle/1/48079
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Associação Brasileira de Tecnologia de Sementes - ABRATES
publisher.none.fl_str_mv Associação Brasileira de Tecnologia de Sementes - ABRATES
dc.source.none.fl_str_mv Journal of Seed Science
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
_version_ 1815439187283804160

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