Pesticide responses of Arctic and temperate microalgae differ in relation to ecophysiological characteristics
Polar ecosystems play an important role in global primary production. Microalgae have adaptations that enable them to live under low temperature environments where irradiance and day length change drastically. Their adaptations, leading to different ecophysiological characteristics relative to tempe...
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Online Access: | https://archimer.ifremer.fr/doc/00804/91582/97513.pdf https://doi.org/10.1016/j.aquatox.2022.106323 https://archimer.ifremer.fr/doc/00804/91582/ |
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ftarchimer:oai:archimer.ifremer.fr:91582 2023-12-10T09:44:40+01:00 Pesticide responses of Arctic and temperate microalgae differ in relation to ecophysiological characteristics Du, Juan Izquierdo, Disney Naoum, Jonathan Ohlund, Leanne Sleno, Lekha Beisner, Beatrix E. Lavaud, Johann Juneau, Philippe 2023-01 application/pdf https://archimer.ifremer.fr/doc/00804/91582/97513.pdf https://doi.org/10.1016/j.aquatox.2022.106323 https://archimer.ifremer.fr/doc/00804/91582/ eng eng Elsevier BV https://archimer.ifremer.fr/doc/00804/91582/97513.pdf doi:10.1016/j.aquatox.2022.106323 https://archimer.ifremer.fr/doc/00804/91582/ info:eu-repo/semantics/openAccess restricted use Aquatic Toxicology (0166-445X) (Elsevier BV), 2023-01 , Vol. 254 , P. 106323 (13p.) Microalgae Micromonas Chaetoceros Ecophysiology Photosynthesis Pesticides Toxicity mechanism text Article info:eu-repo/semantics/article 2023 ftarchimer https://doi.org/10.1016/j.aquatox.2022.106323 2023-11-14T23:51:09Z Polar ecosystems play an important role in global primary production. Microalgae have adaptations that enable them to live under low temperature environments where irradiance and day length change drastically. Their adaptations, leading to different ecophysiological characteristics relative to temperate species, could also alter their sensitivity to pollutants such as pesticides. This study's objective was to understand how different ecophysiological characteristics influence the response of Arctic phytoplankton to pesticides in relation to the responses of their temperate counterparts. Ecophysiological endpoints were related to growth, cell biovolume, pigment content, photosynthetic activity, photoprotective mechanisms (NPQ, antioxidant enzyme activities), and reactive oxygen species (ROS) content. The Arctic species Micromonas polaris was more resistant to atrazine and simazine than its temperate counterpart Micromonas bravo. However, the other Arctic species Chaetoceros neogracilis was more sensitive to these herbicides than its temperate counterpart Chaetoceros neogracile. With respect to two other pesticide toxicity, both temperate microalgae were more sensitive to trifluralin, while Arctic microalgae were more sensitive to chlorpyrifos (insecticide). All differences could be ascribed to differences in the eco-physiological features of the two microalgal groups, which can be explained by cell size, pigment content, ROS content and protective mechanisms (NPQ and antioxidant enzymes). Article in Journal/Newspaper Arctic Phytoplankton Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Arctic Aquatic Toxicology 254 106323 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Microalgae Micromonas Chaetoceros Ecophysiology Photosynthesis Pesticides Toxicity mechanism |
spellingShingle |
Microalgae Micromonas Chaetoceros Ecophysiology Photosynthesis Pesticides Toxicity mechanism Du, Juan Izquierdo, Disney Naoum, Jonathan Ohlund, Leanne Sleno, Lekha Beisner, Beatrix E. Lavaud, Johann Juneau, Philippe Pesticide responses of Arctic and temperate microalgae differ in relation to ecophysiological characteristics |
topic_facet |
Microalgae Micromonas Chaetoceros Ecophysiology Photosynthesis Pesticides Toxicity mechanism |
description |
Polar ecosystems play an important role in global primary production. Microalgae have adaptations that enable them to live under low temperature environments where irradiance and day length change drastically. Their adaptations, leading to different ecophysiological characteristics relative to temperate species, could also alter their sensitivity to pollutants such as pesticides. This study's objective was to understand how different ecophysiological characteristics influence the response of Arctic phytoplankton to pesticides in relation to the responses of their temperate counterparts. Ecophysiological endpoints were related to growth, cell biovolume, pigment content, photosynthetic activity, photoprotective mechanisms (NPQ, antioxidant enzyme activities), and reactive oxygen species (ROS) content. The Arctic species Micromonas polaris was more resistant to atrazine and simazine than its temperate counterpart Micromonas bravo. However, the other Arctic species Chaetoceros neogracilis was more sensitive to these herbicides than its temperate counterpart Chaetoceros neogracile. With respect to two other pesticide toxicity, both temperate microalgae were more sensitive to trifluralin, while Arctic microalgae were more sensitive to chlorpyrifos (insecticide). All differences could be ascribed to differences in the eco-physiological features of the two microalgal groups, which can be explained by cell size, pigment content, ROS content and protective mechanisms (NPQ and antioxidant enzymes). |
format |
Article in Journal/Newspaper |
author |
Du, Juan Izquierdo, Disney Naoum, Jonathan Ohlund, Leanne Sleno, Lekha Beisner, Beatrix E. Lavaud, Johann Juneau, Philippe |
author_facet |
Du, Juan Izquierdo, Disney Naoum, Jonathan Ohlund, Leanne Sleno, Lekha Beisner, Beatrix E. Lavaud, Johann Juneau, Philippe |
author_sort |
Du, Juan |
title |
Pesticide responses of Arctic and temperate microalgae differ in relation to ecophysiological characteristics |
title_short |
Pesticide responses of Arctic and temperate microalgae differ in relation to ecophysiological characteristics |
title_full |
Pesticide responses of Arctic and temperate microalgae differ in relation to ecophysiological characteristics |
title_fullStr |
Pesticide responses of Arctic and temperate microalgae differ in relation to ecophysiological characteristics |
title_full_unstemmed |
Pesticide responses of Arctic and temperate microalgae differ in relation to ecophysiological characteristics |
title_sort |
pesticide responses of arctic and temperate microalgae differ in relation to ecophysiological characteristics |
publisher |
Elsevier BV |
publishDate |
2023 |
url |
https://archimer.ifremer.fr/doc/00804/91582/97513.pdf https://doi.org/10.1016/j.aquatox.2022.106323 https://archimer.ifremer.fr/doc/00804/91582/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Phytoplankton |
genre_facet |
Arctic Phytoplankton |
op_source |
Aquatic Toxicology (0166-445X) (Elsevier BV), 2023-01 , Vol. 254 , P. 106323 (13p.) |
op_relation |
https://archimer.ifremer.fr/doc/00804/91582/97513.pdf doi:10.1016/j.aquatox.2022.106323 https://archimer.ifremer.fr/doc/00804/91582/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.aquatox.2022.106323 |
container_title |
Aquatic Toxicology |
container_volume |
254 |
container_start_page |
106323 |
_version_ |
1784887817462087680 |