Responses to herbicides of Arctic and temperate microalgae grown under different light intensities
International audience In aquatic ecosystems, microalgae are exposed to light fluctuations at different frequencies due to daily and seasonal changes. Although concentrations of herbicides are lower in Arctic than in temperate regions, atrazine and simazine, are increasingly found in northern aquati...
Published in: | Environmental Pollution |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2023
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Subjects: | |
Online Access: | https://hal.science/hal-04146413 https://hal.science/hal-04146413/document https://hal.science/hal-04146413/file/2023-Du%20et%20al%20Env%20Poll-FInal.pdf https://doi.org/10.1016/j.envpol.2023.121985 |
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ftccsdartic:oai:HAL:hal-04146413v1 |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Marine microalgae Atrazine Simazine Light Photoadaptation Ecotoxicology [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology |
spellingShingle |
Marine microalgae Atrazine Simazine Light Photoadaptation Ecotoxicology [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology Du, Juan Izquierdo, Disney Xu, Hai-Feng Lavaud, Johann Ohlund, Leanne Sleno, Lekha Juneau, Philippe Responses to herbicides of Arctic and temperate microalgae grown under different light intensities |
topic_facet |
Marine microalgae Atrazine Simazine Light Photoadaptation Ecotoxicology [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology |
description |
International audience In aquatic ecosystems, microalgae are exposed to light fluctuations at different frequencies due to daily and seasonal changes. Although concentrations of herbicides are lower in Arctic than in temperate regions, atrazine and simazine, are increasingly found in northern aquatic systems because of long-distance aerial dispersal of widespread applications in the south and antifouling biocides used on ships. The toxic effects of atrazine on temperate microalgae are well documented, but very little is known about their effects on Arctic marine microalgae in relation to their temperate counterparts after light adaptation to variable light intensities. We therefore investigated the impacts of atrazine and simazine on photosynthetic activity, PSII energy fluxes, pigment content, photoprotective ability (NPQ), and reactive oxygen species (ROS) content under three light intensities. The goal was to better understand differences in physiological responses to light fluctuations between Arctic and temperate microalgae and to determine how these different characteristics affect their responses to herbicides. The Arctic diatom Chaetoceros showed stronger light adaptation capacity than the Arctic green algae Micromonas. Atrazine and simazine inhibited the growth and photosynthetic electron transport, affected the pigment content, and disturbed the energy balance between light absorption and utilization. As a result, during high light adaptation and in the presence of herbicides, photoprotective pigments were synthesized and NPQ was highly activated. Nevertheless, these protective responses were insufficient to prevent oxidative damage caused by herbicides in both species from both regions, but at different extent depending on the species. Our study demonstrates that light is important in regulating herbicide toxicity in both Arctic and temperate microalgal strains. Moreover, eco-physiological differences in light responses are likely to support changes in the algal community, especially as the Arctic ... |
author2 |
Université du Québec à Montréal = University of Québec in Montréal (UQAM) Central China Normal University Wuhan, China Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Du, Juan Izquierdo, Disney Xu, Hai-Feng Lavaud, Johann Ohlund, Leanne Sleno, Lekha Juneau, Philippe |
author_facet |
Du, Juan Izquierdo, Disney Xu, Hai-Feng Lavaud, Johann Ohlund, Leanne Sleno, Lekha Juneau, Philippe |
author_sort |
Du, Juan |
title |
Responses to herbicides of Arctic and temperate microalgae grown under different light intensities |
title_short |
Responses to herbicides of Arctic and temperate microalgae grown under different light intensities |
title_full |
Responses to herbicides of Arctic and temperate microalgae grown under different light intensities |
title_fullStr |
Responses to herbicides of Arctic and temperate microalgae grown under different light intensities |
title_full_unstemmed |
Responses to herbicides of Arctic and temperate microalgae grown under different light intensities |
title_sort |
responses to herbicides of arctic and temperate microalgae grown under different light intensities |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04146413 https://hal.science/hal-04146413/document https://hal.science/hal-04146413/file/2023-Du%20et%20al%20Env%20Poll-FInal.pdf https://doi.org/10.1016/j.envpol.2023.121985 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 0269-7491 EISSN: 1873-6424 Environmental Pollution https://hal.science/hal-04146413 Environmental Pollution, 2023, 333, pp.121985. ⟨10.1016/j.envpol.2023.121985⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envpol.2023.121985 hal-04146413 https://hal.science/hal-04146413 https://hal.science/hal-04146413/document https://hal.science/hal-04146413/file/2023-Du%20et%20al%20Env%20Poll-FInal.pdf doi:10.1016/j.envpol.2023.121985 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.envpol.2023.121985 |
container_title |
Environmental Pollution |
container_volume |
333 |
container_start_page |
121985 |
_version_ |
1792043690726785024 |
spelling |
ftccsdartic:oai:HAL:hal-04146413v1 2024-02-27T08:36:46+00:00 Responses to herbicides of Arctic and temperate microalgae grown under different light intensities Du, Juan Izquierdo, Disney Xu, Hai-Feng Lavaud, Johann Ohlund, Leanne Sleno, Lekha Juneau, Philippe Université du Québec à Montréal = University of Québec in Montréal (UQAM) Central China Normal University Wuhan, China Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2023 https://hal.science/hal-04146413 https://hal.science/hal-04146413/document https://hal.science/hal-04146413/file/2023-Du%20et%20al%20Env%20Poll-FInal.pdf https://doi.org/10.1016/j.envpol.2023.121985 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envpol.2023.121985 hal-04146413 https://hal.science/hal-04146413 https://hal.science/hal-04146413/document https://hal.science/hal-04146413/file/2023-Du%20et%20al%20Env%20Poll-FInal.pdf doi:10.1016/j.envpol.2023.121985 info:eu-repo/semantics/OpenAccess ISSN: 0269-7491 EISSN: 1873-6424 Environmental Pollution https://hal.science/hal-04146413 Environmental Pollution, 2023, 333, pp.121985. ⟨10.1016/j.envpol.2023.121985⟩ Marine microalgae Atrazine Simazine Light Photoadaptation Ecotoxicology [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology info:eu-repo/semantics/article Journal articles 2023 ftccsdartic https://doi.org/10.1016/j.envpol.2023.121985 2024-01-28T00:41:04Z International audience In aquatic ecosystems, microalgae are exposed to light fluctuations at different frequencies due to daily and seasonal changes. Although concentrations of herbicides are lower in Arctic than in temperate regions, atrazine and simazine, are increasingly found in northern aquatic systems because of long-distance aerial dispersal of widespread applications in the south and antifouling biocides used on ships. The toxic effects of atrazine on temperate microalgae are well documented, but very little is known about their effects on Arctic marine microalgae in relation to their temperate counterparts after light adaptation to variable light intensities. We therefore investigated the impacts of atrazine and simazine on photosynthetic activity, PSII energy fluxes, pigment content, photoprotective ability (NPQ), and reactive oxygen species (ROS) content under three light intensities. The goal was to better understand differences in physiological responses to light fluctuations between Arctic and temperate microalgae and to determine how these different characteristics affect their responses to herbicides. The Arctic diatom Chaetoceros showed stronger light adaptation capacity than the Arctic green algae Micromonas. Atrazine and simazine inhibited the growth and photosynthetic electron transport, affected the pigment content, and disturbed the energy balance between light absorption and utilization. As a result, during high light adaptation and in the presence of herbicides, photoprotective pigments were synthesized and NPQ was highly activated. Nevertheless, these protective responses were insufficient to prevent oxidative damage caused by herbicides in both species from both regions, but at different extent depending on the species. Our study demonstrates that light is important in regulating herbicide toxicity in both Arctic and temperate microalgal strains. Moreover, eco-physiological differences in light responses are likely to support changes in the algal community, especially as the Arctic ... Article in Journal/Newspaper Arctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Environmental Pollution 333 121985 |