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Rising CO2 will increase toxicity of marine dinoflagellate Alexandrium minutum

Lian, Ziru1; Li, Fang1,2; He, Xiuping2; Chen, Junhui2; Yu, Ren-Cheng3,4
2022-06-05
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume431Pages:8
Corresponding AuthorLian, Ziru(yoyo-lzr@hotmail.com)
AbstractOcean acidification caused by increasing emission of carbon dioxide (CO2) is expected to have profound impacts on marine ecological processes, including the formation and evolution of harmful algal blooms (HABs). We designed a set of experiments in the laboratory to examine the effects of increasing CO2 on the growth and toxicity of a toxic dinoflagellate Alexandrium minutum producing paralytic shellfish toxins (PSTs). It was found that high levels of CO2 (800 and 1200 ppm) significantly promoted the growth of A. minutum compared to the group (400 ppm) representing the current CO2 level. The total yields of PSTs by A. minutum, including both intracellular and extracellular toxins, were significantly enhanced, probably due to the induction of core enzyme activity and key amino acids synthesis for PST production. More interestingly, high level of CO2 promoted the transformation from gonyautoxin2 & 3 to gonyautoxin1 & 4 and depressed the release of PSTs from inside to outside of the cells. All these processes collectively led to an apparent increase of A. minutum toxicity. Our study demonstrated that rising CO2 would increase the risk of toxic A. minutum based on the comprehensive analyses of different processes including algal growth and toxin synthesis, transformation and release.
KeywordParalytic shellfish toxins Rising CO2 Harmful algal bloom Alexandrium minutum LC-MS
DOI10.1016/j.jhazmat.2022.128627
Indexed BySCI
Language英语
Funding ProjectShandong Province Natural Science Foundation of China[ZR2019MD026] ; Joint Funds of the National Natural Science Foundation of China[U1806202]
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000783075100004
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/178757
Collection海洋生态与环境科学重点实验室
Corresponding AuthorLian, Ziru
Affiliation1.Shandong Univ, Marine Coll, Weihai 264209, Peoples R China
2.Minist Nat Resources, Inst Oceanog 2, Marine Bioresource & Environm Res Ctr, Key Lab Marine Ecoenvironm Sci & Technol, Qingdao 266061, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Lian, Ziru,Li, Fang,He, Xiuping,et al.

Rising CO2 will increase toxicity of marine dinoflagellate Alexandrium minutum

[J]. JOURNAL OF HAZARDOUS MATERIALS,2022,431:8.
APA Lian, Ziru,Li, Fang,He, Xiuping,Chen, Junhui,&Yu, Ren-Cheng.(2022).

Rising CO2 will increase toxicity of marine dinoflagellate Alexandrium minutum

.JOURNAL OF HAZARDOUS MATERIALS,431,8.
MLA Lian, Ziru,et al."

Rising CO2 will increase toxicity of marine dinoflagellate Alexandrium minutum

".JOURNAL OF HAZARDOUS MATERIALS 431(2022):8.
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