Growth inhibition of sourgrass as a function of period of darkness after diquat application

Detalhes bibliográficos
Autor(a) principal: de Oliveira, Guilherme Mendes Pio
Data de Publicação: 2022
Outros Autores: de Aguiar e Silva, Marcelo Augusto, Dalazen, Giliardi
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Bioscience journal (Online)
Texto Completo: https://seer.ufu.br/index.php/biosciencejournal/article/view/62470
Resumo: Photosystem-inhibiting herbicides, such as diquat, act by inducing oxidative stress. However, oxidative damage impairs translocation, resulting in regrowth of the plants. The aim was to evaluate the effectiveness of diquat in controlling the growth of sourgrass exposed to different periods of darkness after application of the herbicide, as well as to evaluate the photosynthetic activity and the production of reactive oxygen species. Two experiments (field and greenhouse) were conducted by applying diquat (200 g a.i. ha-1) on sourgrass plants at the 3 to 4 tiller stage. The treated plants were subjected to different periods of darkness after diquat application (0, 1, 2, 3, 4, 5, and 6 h), in addition to the control treatment without any application. Growth inhibition and mass evaluations of the sourgrass plants were performed in both experiments, whereas photosynthetic activity and H2O2 accumulation in the leaves were evaluated in the greenhouse experiment. The results showed an increase in the sourgrass growth inhibition with an increase in the period of darkness after application. There was a need for a minimum of 6 h of darkness after diquat application to fully inhibit growth (100%) of the sourgrass, whereas plants that remained in the sun since application exhibited less than 50% inhibition. The increase in the period of darkness after diquat application resulted in a reduction in photosynthetic activity and, consequently, lower accumulation of H2O2. Thus, the maintenance of sourgrass in the dark for at least 6 h enables total control of the growth of the plants, preventing regrowth.
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spelling Growth inhibition of sourgrass as a function of period of darkness after diquat applicationApplication timeDigitaria insularis (L.) FeddeOxidative stressPhotosystem I inhibitorsReactive oxygen species. Agricultural SciencesPhotosystem-inhibiting herbicides, such as diquat, act by inducing oxidative stress. However, oxidative damage impairs translocation, resulting in regrowth of the plants. The aim was to evaluate the effectiveness of diquat in controlling the growth of sourgrass exposed to different periods of darkness after application of the herbicide, as well as to evaluate the photosynthetic activity and the production of reactive oxygen species. Two experiments (field and greenhouse) were conducted by applying diquat (200 g a.i. ha-1) on sourgrass plants at the 3 to 4 tiller stage. The treated plants were subjected to different periods of darkness after diquat application (0, 1, 2, 3, 4, 5, and 6 h), in addition to the control treatment without any application. Growth inhibition and mass evaluations of the sourgrass plants were performed in both experiments, whereas photosynthetic activity and H2O2 accumulation in the leaves were evaluated in the greenhouse experiment. The results showed an increase in the sourgrass growth inhibition with an increase in the period of darkness after application. There was a need for a minimum of 6 h of darkness after diquat application to fully inhibit growth (100%) of the sourgrass, whereas plants that remained in the sun since application exhibited less than 50% inhibition. The increase in the period of darkness after diquat application resulted in a reduction in photosynthetic activity and, consequently, lower accumulation of H2O2. Thus, the maintenance of sourgrass in the dark for at least 6 h enables total control of the growth of the plants, preventing regrowth.EDUFU2022-09-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/6247010.14393/BJ-v38n0a2022-62470Bioscience Journal ; Vol. 38 (2022): Continuous Publication; e38087Bioscience Journal ; v. 38 (2022): Continuous Publication; e380871981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/62470/34661Brazil; Contemporary Copyright (c) 2022 Guilherme Mendes Pio de Oliveira, Marcelo Augusto de Aguiar e Silva, Giliardi Dalazenhttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessde Oliveira, Guilherme Mendes Piode Aguiar e Silva, Marcelo AugustoDalazen, Giliardi2022-09-30T16:16:02Zoai:ojs.www.seer.ufu.br:article/62470Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-09-30T16:16:02Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false
dc.title.none.fl_str_mv Growth inhibition of sourgrass as a function of period of darkness after diquat application
title Growth inhibition of sourgrass as a function of period of darkness after diquat application
spellingShingle Growth inhibition of sourgrass as a function of period of darkness after diquat application
de Oliveira, Guilherme Mendes Pio
Application time
Digitaria insularis (L.) Fedde
Oxidative stress
Photosystem I inhibitors
Reactive oxygen species.
Agricultural Sciences
title_short Growth inhibition of sourgrass as a function of period of darkness after diquat application
title_full Growth inhibition of sourgrass as a function of period of darkness after diquat application
title_fullStr Growth inhibition of sourgrass as a function of period of darkness after diquat application
title_full_unstemmed Growth inhibition of sourgrass as a function of period of darkness after diquat application
title_sort Growth inhibition of sourgrass as a function of period of darkness after diquat application
author de Oliveira, Guilherme Mendes Pio
author_facet de Oliveira, Guilherme Mendes Pio
de Aguiar e Silva, Marcelo Augusto
Dalazen, Giliardi
author_role author
author2 de Aguiar e Silva, Marcelo Augusto
Dalazen, Giliardi
author2_role author
author
dc.contributor.author.fl_str_mv de Oliveira, Guilherme Mendes Pio
de Aguiar e Silva, Marcelo Augusto
Dalazen, Giliardi
dc.subject.por.fl_str_mv Application time
Digitaria insularis (L.) Fedde
Oxidative stress
Photosystem I inhibitors
Reactive oxygen species.
Agricultural Sciences
topic Application time
Digitaria insularis (L.) Fedde
Oxidative stress
Photosystem I inhibitors
Reactive oxygen species.
Agricultural Sciences
description Photosystem-inhibiting herbicides, such as diquat, act by inducing oxidative stress. However, oxidative damage impairs translocation, resulting in regrowth of the plants. The aim was to evaluate the effectiveness of diquat in controlling the growth of sourgrass exposed to different periods of darkness after application of the herbicide, as well as to evaluate the photosynthetic activity and the production of reactive oxygen species. Two experiments (field and greenhouse) were conducted by applying diquat (200 g a.i. ha-1) on sourgrass plants at the 3 to 4 tiller stage. The treated plants were subjected to different periods of darkness after diquat application (0, 1, 2, 3, 4, 5, and 6 h), in addition to the control treatment without any application. Growth inhibition and mass evaluations of the sourgrass plants were performed in both experiments, whereas photosynthetic activity and H2O2 accumulation in the leaves were evaluated in the greenhouse experiment. The results showed an increase in the sourgrass growth inhibition with an increase in the period of darkness after application. There was a need for a minimum of 6 h of darkness after diquat application to fully inhibit growth (100%) of the sourgrass, whereas plants that remained in the sun since application exhibited less than 50% inhibition. The increase in the period of darkness after diquat application resulted in a reduction in photosynthetic activity and, consequently, lower accumulation of H2O2. Thus, the maintenance of sourgrass in the dark for at least 6 h enables total control of the growth of the plants, preventing regrowth.
publishDate 2022
dc.date.none.fl_str_mv 2022-09-30
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/62470
10.14393/BJ-v38n0a2022-62470
url https://seer.ufu.br/index.php/biosciencejournal/article/view/62470
identifier_str_mv 10.14393/BJ-v38n0a2022-62470
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.ufu.br/index.php/biosciencejournal/article/view/62470/34661
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. 38 (2022): Continuous Publication; e38087
Bioscience Journal ; v. 38 (2022): Continuous Publication; e38087
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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