Glyphosate hormesis attenuates water deficit stress in safflower (Carthamus tinctorius L.) by modulating physiological and biochemical mediators
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.scitotenv.2021.152204 http://hdl.handle.net/11449/223052 |
Resumo: | Changes in photosynthetic machinery can induce physiological and biochemical damage in plants. Low doses of glyphosate have been shown to exert a positive effect in mitigating the deleterious effects of water deficit in plants. Here, the physiological and biochemical mechanisms of safflower plants (Carthamus tinctorius L.) were studied under conditions of water deficit mediated by the attenuating effect of low-dose glyphosate. The plants were divided into two groups of water regimes in soil, without water deficit (−10 kPa) and with water deficit (−70 kPa), and were exposed to different concentrations of glyphosate (0, 1.8, 3.6, 7.2, 18, 36, 72, 180, 360, and 720 g a.e. ha−1). Evident protective responses at the physiological and biochemical levels were obtained after applying low doses of glyphosate to plants under water deficit, with a limiting dose for the occurrence of hormesis (LDS) = 72 g a.e. ha−1. The water deficit in plants resulted in hydrogen peroxide (H2O2) accumulation and consequently lipid peroxidation (LPO) associated with the accumulation of shikimic acid and glyphosate in plants, which triggered an increase in the activity of antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) that act by dismuting the levels of reactive oxygen species (ROS), maintaining, and/or increasing the maximum quantum efficiency of photosystem II (Fv/Fm), effective quantum yield of photosystem II (ΦPSII), electron transport rate (ETR), photochemical extinction coefficient (qP), and non-photochemical extinction coefficient (NPQ). APX appears to be the main enzyme involved in eliminating H2O2. Low doses of glyphosate act as water deficit ameliorators, allowing the plant to maintain/increase metabolism at physiological and biochemical levels by activating antioxidant enzymes in the dismutation of ROS in safflower plants. |
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Glyphosate hormesis attenuates water deficit stress in safflower (Carthamus tinctorius L.) by modulating physiological and biochemical mediatorsChlorophyll fluorescence componentsLow doseN-(phosphonomethyl)glycineOilseedOxidative stressShikimateChanges in photosynthetic machinery can induce physiological and biochemical damage in plants. Low doses of glyphosate have been shown to exert a positive effect in mitigating the deleterious effects of water deficit in plants. Here, the physiological and biochemical mechanisms of safflower plants (Carthamus tinctorius L.) were studied under conditions of water deficit mediated by the attenuating effect of low-dose glyphosate. The plants were divided into two groups of water regimes in soil, without water deficit (−10 kPa) and with water deficit (−70 kPa), and were exposed to different concentrations of glyphosate (0, 1.8, 3.6, 7.2, 18, 36, 72, 180, 360, and 720 g a.e. ha−1). Evident protective responses at the physiological and biochemical levels were obtained after applying low doses of glyphosate to plants under water deficit, with a limiting dose for the occurrence of hormesis (LDS) = 72 g a.e. ha−1. The water deficit in plants resulted in hydrogen peroxide (H2O2) accumulation and consequently lipid peroxidation (LPO) associated with the accumulation of shikimic acid and glyphosate in plants, which triggered an increase in the activity of antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) that act by dismuting the levels of reactive oxygen species (ROS), maintaining, and/or increasing the maximum quantum efficiency of photosystem II (Fv/Fm), effective quantum yield of photosystem II (ΦPSII), electron transport rate (ETR), photochemical extinction coefficient (qP), and non-photochemical extinction coefficient (NPQ). APX appears to be the main enzyme involved in eliminating H2O2. Low doses of glyphosate act as water deficit ameliorators, allowing the plant to maintain/increase metabolism at physiological and biochemical levels by activating antioxidant enzymes in the dismutation of ROS in safflower plants.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)São Paulo State University (UNESP) School of Agricultural Sciences Department of Crop Production Laboratory of Ecophysiology Applied to Agriculture (LECA)University of São Paulo (USP) College of Agriculture “Luiz de Queiroz” (ESALQ) Department of Exact SciencesSão Paulo State University (UNESP) School of Agricultural Sciences Department of Crop Protection Center for Advanced Research on WeedsSão Paulo State University (UNESP) School of Agricultural Sciences Department of Crop Production Laboratory of Ecophysiology Applied to Agriculture (LECA)São Paulo State University (UNESP) School of Agricultural Sciences Department of Crop Protection Center for Advanced Research on WeedsCNPq: 305952/2018-8CNPq: 307208/2020-6Universidade Estadual Paulista (UNESP)Universidade de São Paulo (USP)Camilo dos Santos, Jania Claudia [UNESP]Ribeiro Silva, Dayane Mércia [UNESP]Jardim Amorim, Deocleciodo Rosário Rosa, Vanessa [UNESP]Farias dos Santos, Anna Luiza [UNESP]Domingues Velini, Edivaldo [UNESP]Carbonari, Caio Antonio [UNESP]de Almeida Silva, Marcelo [UNESP]2022-04-28T19:48:21Z2022-04-28T19:48:21Z2022-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.scitotenv.2021.152204Science of the Total Environment, v. 810.1879-10260048-9697http://hdl.handle.net/11449/22305210.1016/j.scitotenv.2021.1522042-s2.0-85121132260Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengScience of the Total Environmentinfo:eu-repo/semantics/openAccess2022-04-28T19:48:21Zoai:repositorio.unesp.br:11449/223052Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T19:48:21Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Glyphosate hormesis attenuates water deficit stress in safflower (Carthamus tinctorius L.) by modulating physiological and biochemical mediators |
title |
Glyphosate hormesis attenuates water deficit stress in safflower (Carthamus tinctorius L.) by modulating physiological and biochemical mediators |
spellingShingle |
Glyphosate hormesis attenuates water deficit stress in safflower (Carthamus tinctorius L.) by modulating physiological and biochemical mediators Camilo dos Santos, Jania Claudia [UNESP] Chlorophyll fluorescence components Low dose N-(phosphonomethyl)glycine Oilseed Oxidative stress Shikimate |
title_short |
Glyphosate hormesis attenuates water deficit stress in safflower (Carthamus tinctorius L.) by modulating physiological and biochemical mediators |
title_full |
Glyphosate hormesis attenuates water deficit stress in safflower (Carthamus tinctorius L.) by modulating physiological and biochemical mediators |
title_fullStr |
Glyphosate hormesis attenuates water deficit stress in safflower (Carthamus tinctorius L.) by modulating physiological and biochemical mediators |
title_full_unstemmed |
Glyphosate hormesis attenuates water deficit stress in safflower (Carthamus tinctorius L.) by modulating physiological and biochemical mediators |
title_sort |
Glyphosate hormesis attenuates water deficit stress in safflower (Carthamus tinctorius L.) by modulating physiological and biochemical mediators |
author |
Camilo dos Santos, Jania Claudia [UNESP] |
author_facet |
Camilo dos Santos, Jania Claudia [UNESP] Ribeiro Silva, Dayane Mércia [UNESP] Jardim Amorim, Deoclecio do Rosário Rosa, Vanessa [UNESP] Farias dos Santos, Anna Luiza [UNESP] Domingues Velini, Edivaldo [UNESP] Carbonari, Caio Antonio [UNESP] de Almeida Silva, Marcelo [UNESP] |
author_role |
author |
author2 |
Ribeiro Silva, Dayane Mércia [UNESP] Jardim Amorim, Deoclecio do Rosário Rosa, Vanessa [UNESP] Farias dos Santos, Anna Luiza [UNESP] Domingues Velini, Edivaldo [UNESP] Carbonari, Caio Antonio [UNESP] de Almeida Silva, Marcelo [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Camilo dos Santos, Jania Claudia [UNESP] Ribeiro Silva, Dayane Mércia [UNESP] Jardim Amorim, Deoclecio do Rosário Rosa, Vanessa [UNESP] Farias dos Santos, Anna Luiza [UNESP] Domingues Velini, Edivaldo [UNESP] Carbonari, Caio Antonio [UNESP] de Almeida Silva, Marcelo [UNESP] |
dc.subject.por.fl_str_mv |
Chlorophyll fluorescence components Low dose N-(phosphonomethyl)glycine Oilseed Oxidative stress Shikimate |
topic |
Chlorophyll fluorescence components Low dose N-(phosphonomethyl)glycine Oilseed Oxidative stress Shikimate |
description |
Changes in photosynthetic machinery can induce physiological and biochemical damage in plants. Low doses of glyphosate have been shown to exert a positive effect in mitigating the deleterious effects of water deficit in plants. Here, the physiological and biochemical mechanisms of safflower plants (Carthamus tinctorius L.) were studied under conditions of water deficit mediated by the attenuating effect of low-dose glyphosate. The plants were divided into two groups of water regimes in soil, without water deficit (−10 kPa) and with water deficit (−70 kPa), and were exposed to different concentrations of glyphosate (0, 1.8, 3.6, 7.2, 18, 36, 72, 180, 360, and 720 g a.e. ha−1). Evident protective responses at the physiological and biochemical levels were obtained after applying low doses of glyphosate to plants under water deficit, with a limiting dose for the occurrence of hormesis (LDS) = 72 g a.e. ha−1. The water deficit in plants resulted in hydrogen peroxide (H2O2) accumulation and consequently lipid peroxidation (LPO) associated with the accumulation of shikimic acid and glyphosate in plants, which triggered an increase in the activity of antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) that act by dismuting the levels of reactive oxygen species (ROS), maintaining, and/or increasing the maximum quantum efficiency of photosystem II (Fv/Fm), effective quantum yield of photosystem II (ΦPSII), electron transport rate (ETR), photochemical extinction coefficient (qP), and non-photochemical extinction coefficient (NPQ). APX appears to be the main enzyme involved in eliminating H2O2. Low doses of glyphosate act as water deficit ameliorators, allowing the plant to maintain/increase metabolism at physiological and biochemical levels by activating antioxidant enzymes in the dismutation of ROS in safflower plants. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-28T19:48:21Z 2022-04-28T19:48:21Z 2022-03-01 |
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://dx.doi.org/10.1016/j.scitotenv.2021.152204 Science of the Total Environment, v. 810. 1879-1026 0048-9697 http://hdl.handle.net/11449/223052 10.1016/j.scitotenv.2021.152204 2-s2.0-85121132260 |
url |
http://dx.doi.org/10.1016/j.scitotenv.2021.152204 http://hdl.handle.net/11449/223052 |
identifier_str_mv |
Science of the Total Environment, v. 810. 1879-1026 0048-9697 10.1016/j.scitotenv.2021.152204 2-s2.0-85121132260 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Science of the Total Environment |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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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1803046833611603968 |