CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum
Discharges of CO2 and nutrients by anthropogenic activities have notable contributions to CO2 enrichment and eutrophication in coastal systems. Following our previous study that toxic dinoflagellate Alexandrium minutum will increase their growth rate and cellular toxicity under elevated levels of CO...
Published in: | Journal of Hazardous Materials |
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/183991 2024-04-28T08:34:54+00:00 CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum Li, Fang Guo, Lin Chen, Junhui Lian, Ziru Yu, Ren-Cheng 2024-02-05 http://ir.qdio.ac.cn/handle/337002/183991 https://doi.org/10.1016/j.jhazmat.2023.132869 英语 eng ELSEVIER JOURNAL OF HAZARDOUS MATERIALS http://ir.qdio.ac.cn/handle/337002/183991 doi:10.1016/j.jhazmat.2023.132869 Alexandrium minutum Paralytic shellfish toxins Ocean acidification Eutrophication Harmful algal blooms Engineering Environmental Sciences & Ecology Environmental Environmental Sciences TOXIN PRODUCTION COASTAL WATERS ELEVATED CO2 ALGAL BLOOMS GROWTH ACIDIFICATION SAXITOXIN TAMARENSE CULTURES 期刊论文 2024 ftchinacasciocas https://doi.org/10.1016/j.jhazmat.2023.132869 2024-04-08T00:16:49Z Discharges of CO2 and nutrients by anthropogenic activities have notable contributions to CO2 enrichment and eutrophication in coastal systems. Following our previous study that toxic dinoflagellate Alexandrium minutum will increase their growth rate and cellular toxicity under elevated levels of CO2, we further examined the joint effects of CO2 enrichment and excess nitrogen supply through a 29-day experiment under three CO2 levels (400, 800 and 1200 ppm) with a high N/P ratio of 80. It was found that the two factors have synergistical effects in promoting the increase of cellular toxicity. There were remarkable increases in toxin biosynthesis of paralytic shellfish toxins when both intracellular and extracellular toxins were considered. Under the joint impacts of CO2 enrichment and excess nitrogen supply, the apparent transformation from gonyautoxins2/3 to gonyautoxins1/4, with much higher toxicity and lower rate of release, is likely to be another major factor accounting for the increasing toxicity. The increasing growth rate and cellular toxicity of A. minutum under the scenarios with elevated concentrations of both CO2 and nitrogen in coastal systems in the future will increase the risks associated with such toxic algal blooms. Report Ocean acidification Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Journal of Hazardous Materials 463 132869 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
Alexandrium minutum Paralytic shellfish toxins Ocean acidification Eutrophication Harmful algal blooms Engineering Environmental Sciences & Ecology Environmental Environmental Sciences TOXIN PRODUCTION COASTAL WATERS ELEVATED CO2 ALGAL BLOOMS GROWTH ACIDIFICATION SAXITOXIN TAMARENSE CULTURES |
spellingShingle |
Alexandrium minutum Paralytic shellfish toxins Ocean acidification Eutrophication Harmful algal blooms Engineering Environmental Sciences & Ecology Environmental Environmental Sciences TOXIN PRODUCTION COASTAL WATERS ELEVATED CO2 ALGAL BLOOMS GROWTH ACIDIFICATION SAXITOXIN TAMARENSE CULTURES Li, Fang Guo, Lin Chen, Junhui Lian, Ziru Yu, Ren-Cheng CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum |
topic_facet |
Alexandrium minutum Paralytic shellfish toxins Ocean acidification Eutrophication Harmful algal blooms Engineering Environmental Sciences & Ecology Environmental Environmental Sciences TOXIN PRODUCTION COASTAL WATERS ELEVATED CO2 ALGAL BLOOMS GROWTH ACIDIFICATION SAXITOXIN TAMARENSE CULTURES |
description |
Discharges of CO2 and nutrients by anthropogenic activities have notable contributions to CO2 enrichment and eutrophication in coastal systems. Following our previous study that toxic dinoflagellate Alexandrium minutum will increase their growth rate and cellular toxicity under elevated levels of CO2, we further examined the joint effects of CO2 enrichment and excess nitrogen supply through a 29-day experiment under three CO2 levels (400, 800 and 1200 ppm) with a high N/P ratio of 80. It was found that the two factors have synergistical effects in promoting the increase of cellular toxicity. There were remarkable increases in toxin biosynthesis of paralytic shellfish toxins when both intracellular and extracellular toxins were considered. Under the joint impacts of CO2 enrichment and excess nitrogen supply, the apparent transformation from gonyautoxins2/3 to gonyautoxins1/4, with much higher toxicity and lower rate of release, is likely to be another major factor accounting for the increasing toxicity. The increasing growth rate and cellular toxicity of A. minutum under the scenarios with elevated concentrations of both CO2 and nitrogen in coastal systems in the future will increase the risks associated with such toxic algal blooms. |
format |
Report |
author |
Li, Fang Guo, Lin Chen, Junhui Lian, Ziru Yu, Ren-Cheng |
author_facet |
Li, Fang Guo, Lin Chen, Junhui Lian, Ziru Yu, Ren-Cheng |
author_sort |
Li, Fang |
title |
CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum |
title_short |
CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum |
title_full |
CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum |
title_fullStr |
CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum |
title_full_unstemmed |
CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum |
title_sort |
co2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate alexandrium minutum |
publisher |
ELSEVIER |
publishDate |
2024 |
url |
http://ir.qdio.ac.cn/handle/337002/183991 https://doi.org/10.1016/j.jhazmat.2023.132869 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
JOURNAL OF HAZARDOUS MATERIALS http://ir.qdio.ac.cn/handle/337002/183991 doi:10.1016/j.jhazmat.2023.132869 |
op_doi |
https://doi.org/10.1016/j.jhazmat.2023.132869 |
container_title |
Journal of Hazardous Materials |
container_volume |
463 |
container_start_page |
132869 |
_version_ |
1797591423659278336 |