Chalcones to control Alternaria alternata in murcott tangor fruits

Detalhes bibliográficos
Autor(a) principal: Camargos, Renato Barbosa
Data de Publicação: 2016
Outros Autores: Perina, Fabiano José, Carvalho, Daniel Diego Costa, Alves, Eduardo, Mascarello, Alessandra, Chiaradia-Delatorre, Louise Domeneghini, Yunes, Rosendo Augusto, Nunes, Ricardo José, Oliveira, Denilson Ferreira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Bioscience journal (Online)
Texto Completo: https://seer.ufu.br/index.php/biosciencejournal/article/view/33267
Resumo: Alternaria brown spot (ABS), caused by the fungus Alternaria alternata pathotype tangerine, is one of the main phytosanitary problems for mandarin growers. About 15 applications per year of harmful fungicides are required for controlling ABS disease in citrus orchards. As chalcones seem to be less toxic to humans and environment than the commercial fungicides in use, this study initially aimed at synthesizing 137 chalcones through aldolic condensations between benzaldehydes and acetophenones. The resulting chalcones were screened for activity against A. alternata through a fungal growth assay that was carried out in 96-cell polypropylene plates, using the same concentration to all studied substances. The four active chalcones underwent conidia germination and mycelial growth, which confirmed the antifungal activity of the compounds. These chalcones were then poured onto Murcott tangor fruit that had been inoculated with conidia of the fungus. All four chalcones reduced the ABS progress to values significantly smaller (P≤0.05) than that observed for the control. Statistical calculations showed that the best results were afforded by two compounds, bearing a 2,4,5-trimethoxyphenyl group at position 3 of prop-2-enal and a 3-nitro- or 3-hydroxyphenyl group at position 1 of the aldehyde. Such compounds reduced the incidence of the disease in Murcott tangor fruit to values that did not differ statistically from those obtained with a commercial fungicide.
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spelling Chalcones to control Alternaria alternata in murcott tangor fruits Alternaria brown spotcitrusmandarinchemical controlAgricultural SciencesAlternaria brown spot (ABS), caused by the fungus Alternaria alternata pathotype tangerine, is one of the main phytosanitary problems for mandarin growers. About 15 applications per year of harmful fungicides are required for controlling ABS disease in citrus orchards. As chalcones seem to be less toxic to humans and environment than the commercial fungicides in use, this study initially aimed at synthesizing 137 chalcones through aldolic condensations between benzaldehydes and acetophenones. The resulting chalcones were screened for activity against A. alternata through a fungal growth assay that was carried out in 96-cell polypropylene plates, using the same concentration to all studied substances. The four active chalcones underwent conidia germination and mycelial growth, which confirmed the antifungal activity of the compounds. These chalcones were then poured onto Murcott tangor fruit that had been inoculated with conidia of the fungus. All four chalcones reduced the ABS progress to values significantly smaller (P≤0.05) than that observed for the control. Statistical calculations showed that the best results were afforded by two compounds, bearing a 2,4,5-trimethoxyphenyl group at position 3 of prop-2-enal and a 3-nitro- or 3-hydroxyphenyl group at position 1 of the aldehyde. Such compounds reduced the incidence of the disease in Murcott tangor fruit to values that did not differ statistically from those obtained with a commercial fungicide.EDUFU2016-12-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/3326710.14393/BJ-v32n6a2016-33267Bioscience Journal ; Vol. 32 No. 6 (2016): Nov./Dec.; 1512-1521Bioscience Journal ; v. 32 n. 6 (2016): Nov./Dec.; 1512-15211981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/33267/19349Brazil; ContemporaryCopyright (c) 2016 Renato Barbosa Camargos, Fabiano José Perina, Daniel Diego Costa Carvalho, Eduardo Alves, Alessandra Mascarello, Louise Domeneghini Chiaradia-Delatorre, Rosendo Augusto Yunes, Ricardo José Nunes, Denilson Ferreira Oliveirahttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessCamargos, Renato BarbosaPerina, Fabiano JoséCarvalho, Daniel Diego CostaAlves, EduardoMascarello, AlessandraChiaradia-Delatorre, Louise DomeneghiniYunes, Rosendo AugustoNunes, Ricardo JoséOliveira, Denilson Ferreira2022-02-16T17:27:29Zoai:ojs.www.seer.ufu.br:article/33267Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-02-16T17:27:29Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false
dc.title.none.fl_str_mv Chalcones to control Alternaria alternata in murcott tangor fruits
title Chalcones to control Alternaria alternata in murcott tangor fruits
spellingShingle Chalcones to control Alternaria alternata in murcott tangor fruits
Camargos, Renato Barbosa
Alternaria brown spot
citrus
mandarin
chemical control
Agricultural Sciences
title_short Chalcones to control Alternaria alternata in murcott tangor fruits
title_full Chalcones to control Alternaria alternata in murcott tangor fruits
title_fullStr Chalcones to control Alternaria alternata in murcott tangor fruits
title_full_unstemmed Chalcones to control Alternaria alternata in murcott tangor fruits
title_sort Chalcones to control Alternaria alternata in murcott tangor fruits
author Camargos, Renato Barbosa
author_facet Camargos, Renato Barbosa
Perina, Fabiano José
Carvalho, Daniel Diego Costa
Alves, Eduardo
Mascarello, Alessandra
Chiaradia-Delatorre, Louise Domeneghini
Yunes, Rosendo Augusto
Nunes, Ricardo José
Oliveira, Denilson Ferreira
author_role author
author2 Perina, Fabiano José
Carvalho, Daniel Diego Costa
Alves, Eduardo
Mascarello, Alessandra
Chiaradia-Delatorre, Louise Domeneghini
Yunes, Rosendo Augusto
Nunes, Ricardo José
Oliveira, Denilson Ferreira
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Camargos, Renato Barbosa
Perina, Fabiano José
Carvalho, Daniel Diego Costa
Alves, Eduardo
Mascarello, Alessandra
Chiaradia-Delatorre, Louise Domeneghini
Yunes, Rosendo Augusto
Nunes, Ricardo José
Oliveira, Denilson Ferreira
dc.subject.por.fl_str_mv Alternaria brown spot
citrus
mandarin
chemical control
Agricultural Sciences
topic Alternaria brown spot
citrus
mandarin
chemical control
Agricultural Sciences
description Alternaria brown spot (ABS), caused by the fungus Alternaria alternata pathotype tangerine, is one of the main phytosanitary problems for mandarin growers. About 15 applications per year of harmful fungicides are required for controlling ABS disease in citrus orchards. As chalcones seem to be less toxic to humans and environment than the commercial fungicides in use, this study initially aimed at synthesizing 137 chalcones through aldolic condensations between benzaldehydes and acetophenones. The resulting chalcones were screened for activity against A. alternata through a fungal growth assay that was carried out in 96-cell polypropylene plates, using the same concentration to all studied substances. The four active chalcones underwent conidia germination and mycelial growth, which confirmed the antifungal activity of the compounds. These chalcones were then poured onto Murcott tangor fruit that had been inoculated with conidia of the fungus. All four chalcones reduced the ABS progress to values significantly smaller (P≤0.05) than that observed for the control. Statistical calculations showed that the best results were afforded by two compounds, bearing a 2,4,5-trimethoxyphenyl group at position 3 of prop-2-enal and a 3-nitro- or 3-hydroxyphenyl group at position 1 of the aldehyde. Such compounds reduced the incidence of the disease in Murcott tangor fruit to values that did not differ statistically from those obtained with a commercial fungicide.
publishDate 2016
dc.date.none.fl_str_mv 2016-12-06
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.ufu.br/index.php/biosciencejournal/article/view/33267
10.14393/BJ-v32n6a2016-33267
url https://seer.ufu.br/index.php/biosciencejournal/article/view/33267
identifier_str_mv 10.14393/BJ-v32n6a2016-33267
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.ufu.br/index.php/biosciencejournal/article/view/33267/19349
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Brazil; Contemporary
dc.publisher.none.fl_str_mv EDUFU
publisher.none.fl_str_mv EDUFU
dc.source.none.fl_str_mv Bioscience Journal ; Vol. 32 No. 6 (2016): Nov./Dec.; 1512-1521
Bioscience Journal ; v. 32 n. 6 (2016): Nov./Dec.; 1512-1521
1981-3163
reponame:Bioscience journal (Online)
instname:Universidade Federal de Uberlândia (UFU)
instacron:UFU
instname_str Universidade Federal de Uberlândia (UFU)
instacron_str UFU
institution UFU
reponame_str Bioscience journal (Online)
collection Bioscience journal (Online)
repository.name.fl_str_mv Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)
repository.mail.fl_str_mv biosciencej@ufu.br||
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