Effect of herbicides based on glyphosate on the photosynthesis of green macroalgae in tropical lotic environments
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1127/fal/2021/1365 http://hdl.handle.net/11449/233436 |
Resumo: | The susceptibility of aquatic environments to contamination by glyphosate has been of worldwide con-cern, mainly since this herbicide affects important physiological processes such as photosynthesis. Considering this, we evaluated the effects of two forms of glyphosate (technical grade and Roundup®) on the photosynthesis of four lotic green macroalgae (Nitela subglomerata, Oedogonium sp., Spirogyra sp., and Desmidium grevillei) after seven days of exposure. The photosynthetic ability of these macroalgae was analyzed by photochemical performance using the chlorophyll-a fluorescence and chlorophyll-a content techniques. The results showed that Roundup® reduced the chlorophyll-a content of macroalgae and affected more specimens when compared to tech-nical-grade glyphosate. According to these results, we suggest that the presence of glyphosate-based herbicides in tropical streams might affect the photosynthesis of stream macroalgal communities, even in concentrations allowed by Brazilian law, which represent a great risk for the structural and functional dynamics of these ecosystems as a whole. |
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Repositório Institucional da UNESP |
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Effect of herbicides based on glyphosate on the photosynthesis of green macroalgae in tropical lotic environmentsChlorophyll fluorescenceChlorophyll-a contentGlyphosateMaximal permissible concentrationRoundup®The susceptibility of aquatic environments to contamination by glyphosate has been of worldwide con-cern, mainly since this herbicide affects important physiological processes such as photosynthesis. Considering this, we evaluated the effects of two forms of glyphosate (technical grade and Roundup®) on the photosynthesis of four lotic green macroalgae (Nitela subglomerata, Oedogonium sp., Spirogyra sp., and Desmidium grevillei) after seven days of exposure. The photosynthetic ability of these macroalgae was analyzed by photochemical performance using the chlorophyll-a fluorescence and chlorophyll-a content techniques. The results showed that Roundup® reduced the chlorophyll-a content of macroalgae and affected more specimens when compared to tech-nical-grade glyphosate. According to these results, we suggest that the presence of glyphosate-based herbicides in tropical streams might affect the photosynthesis of stream macroalgal communities, even in concentrations allowed by Brazilian law, which represent a great risk for the structural and functional dynamics of these ecosystems as a whole.Aquatic Biology Laboratory Department of Biology Faculty of Sciences and Letters São Paulo State University UNESPAquatic Biology Laboratory Department of Biology Faculty of Sciences and Letters São Paulo State University UNESPUniversidade Estadual Paulista (UNESP)Oliveira, Régis de Campos [UNESP]Boas, Lucas Kortz Vilas [UNESP]Branco, Ciro Cesar Zanini [UNESP]2022-05-01T08:44:40Z2022-05-01T08:44:40Z2021-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article85-93http://dx.doi.org/10.1127/fal/2021/1365Fundamental and Applied Limnology, v. 195, n. 2, p. 85-93, 2021.2363-71101863-9135http://hdl.handle.net/11449/23343610.1127/fal/2021/13652-s2.0-85113416491Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengFundamental and Applied Limnologyinfo:eu-repo/semantics/openAccess2024-06-13T17:37:58Zoai:repositorio.unesp.br:11449/233436Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:39:50.536247Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of herbicides based on glyphosate on the photosynthesis of green macroalgae in tropical lotic environments |
title |
Effect of herbicides based on glyphosate on the photosynthesis of green macroalgae in tropical lotic environments |
spellingShingle |
Effect of herbicides based on glyphosate on the photosynthesis of green macroalgae in tropical lotic environments Oliveira, Régis de Campos [UNESP] Chlorophyll fluorescence Chlorophyll-a content Glyphosate Maximal permissible concentration Roundup® |
title_short |
Effect of herbicides based on glyphosate on the photosynthesis of green macroalgae in tropical lotic environments |
title_full |
Effect of herbicides based on glyphosate on the photosynthesis of green macroalgae in tropical lotic environments |
title_fullStr |
Effect of herbicides based on glyphosate on the photosynthesis of green macroalgae in tropical lotic environments |
title_full_unstemmed |
Effect of herbicides based on glyphosate on the photosynthesis of green macroalgae in tropical lotic environments |
title_sort |
Effect of herbicides based on glyphosate on the photosynthesis of green macroalgae in tropical lotic environments |
author |
Oliveira, Régis de Campos [UNESP] |
author_facet |
Oliveira, Régis de Campos [UNESP] Boas, Lucas Kortz Vilas [UNESP] Branco, Ciro Cesar Zanini [UNESP] |
author_role |
author |
author2 |
Boas, Lucas Kortz Vilas [UNESP] Branco, Ciro Cesar Zanini [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Oliveira, Régis de Campos [UNESP] Boas, Lucas Kortz Vilas [UNESP] Branco, Ciro Cesar Zanini [UNESP] |
dc.subject.por.fl_str_mv |
Chlorophyll fluorescence Chlorophyll-a content Glyphosate Maximal permissible concentration Roundup® |
topic |
Chlorophyll fluorescence Chlorophyll-a content Glyphosate Maximal permissible concentration Roundup® |
description |
The susceptibility of aquatic environments to contamination by glyphosate has been of worldwide con-cern, mainly since this herbicide affects important physiological processes such as photosynthesis. Considering this, we evaluated the effects of two forms of glyphosate (technical grade and Roundup®) on the photosynthesis of four lotic green macroalgae (Nitela subglomerata, Oedogonium sp., Spirogyra sp., and Desmidium grevillei) after seven days of exposure. The photosynthetic ability of these macroalgae was analyzed by photochemical performance using the chlorophyll-a fluorescence and chlorophyll-a content techniques. The results showed that Roundup® reduced the chlorophyll-a content of macroalgae and affected more specimens when compared to tech-nical-grade glyphosate. According to these results, we suggest that the presence of glyphosate-based herbicides in tropical streams might affect the photosynthesis of stream macroalgal communities, even in concentrations allowed by Brazilian law, which represent a great risk for the structural and functional dynamics of these ecosystems as a whole. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-09-01 2022-05-01T08:44:40Z 2022-05-01T08:44:40Z |
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/10.1127/fal/2021/1365 Fundamental and Applied Limnology, v. 195, n. 2, p. 85-93, 2021. 2363-7110 1863-9135 http://hdl.handle.net/11449/233436 10.1127/fal/2021/1365 2-s2.0-85113416491 |
url |
http://dx.doi.org/10.1127/fal/2021/1365 http://hdl.handle.net/11449/233436 |
identifier_str_mv |
Fundamental and Applied Limnology, v. 195, n. 2, p. 85-93, 2021. 2363-7110 1863-9135 10.1127/fal/2021/1365 2-s2.0-85113416491 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Fundamental and Applied Limnology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
85-93 |
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 |
|
_version_ |
1808128260944429056 |