CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate<i> Alexandrium</i><i> minutum</i>

doi:10.1016/j.jhazmat.2023.132869

	CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum
	Li, Fang 1,2; Guo, Lin1 ; Chen, Junhui 2; Lian, Ziru 1; Yu, Ren-Cheng 3,4
	2024-02-05
发表期刊	JOURNAL OF HAZARDOUS MATERIALS
ISSN	0304-3894
卷号	463 页码:8
通讯作者	Lian, Ziru(yoyo-lzr@hotmail.com)
摘要	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.
关键词	Alexandrium minutum Paralytic shellfish toxins Ocean acidification Eutrophication Harmful algal blooms
DOI	10.1016/j.jhazmat.2023.132869
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[U22A20583] ; National Natural Science Foundation of China[U2106205] ; Taishan Scholars Program
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:001109498100001
出版者	ELSEVIER
WOS关键词	TOXIN PRODUCTION ; COASTAL WATERS ; ELEVATED CO2 ; ALGAL BLOOMS ; GROWTH ; EUTROPHICATION ; ACIDIFICATION ; SAXITOXIN ; TAMARENSE ; CULTURES
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/183993
专题	海洋生态与环境科学重点实验室
通讯作者	Lian, Ziru
作者单位	1.Shandong Univ, Marine Coll, Weihai 264209, Peoples R China 2.Minist Nat Resources, Inst Oceanog 1, 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
推荐引用方式 GB/T 7714	Li, Fang,Guo, Lin,Chen, Junhui,et al. CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum[J]. JOURNAL OF HAZARDOUS MATERIALS,2024,463:8.
APA	Li, Fang,Guo, Lin,Chen, Junhui,Lian, Ziru,&Yu, Ren-Cheng.(2024).CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum.JOURNAL OF HAZARDOUS MATERIALS,463,8.
MLA	Li, Fang,et al."CO2 enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum".JOURNAL OF HAZARDOUS MATERIALS 463(2024):8.