Chalcones to control Alternaria alternata in murcott tangor fruits
Autor(a) principal: | |
---|---|
Data de Publicação: | 2016 |
Outros Autores: | , , , , , , , |
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. |
id |
UFU-14_fbf3a940a0d138062000b32a24c80057 |
---|---|
oai_identifier_str |
oai:ojs.www.seer.ufu.br:article/33267 |
network_acronym_str |
UFU-14 |
network_name_str |
Bioscience journal (Online) |
repository_id_str |
|
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|| |
_version_ |
1797069076495859712 |