PMID- 28806552 OWN - NLM STAT- MEDLINE DCOM- 20180814 LR - 20180814 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 610-611 DP - 2018 Jan 1 TI - Exposure of engineered nanoparticles to Alexandrium tamarense (Dinophyceae): Healthy impacts of nanoparticles via toxin-producing dinoflagellate. PG - 356-366 LID - S0048-9697(17)31277-9 [pii] LID - 10.1016/j.scitotenv.2017.05.170 [doi] AB - Human activities can enhance the frequency, intensity and occurrence of harmful algal blooms (HABs). Engineered nanoparticles (ENPs), contained in many materials, will inevitably enter coastal waters and thus cause unpredictable impacts on aquatic organisms. However, knowledge of the influence of ENPs on HAB species is still lacking. In this study, we examined the effects of titanium dioxide nanoparticles ((n)TiO(2)), zinc oxide nanoparticles ((n)ZnO) and aluminum oxide nanoparticles ((n)Al(2)O(3)) on physiological changes and paralytic shellfish poisoning toxins (PSTs) production of Alexandrium tamarense. We found a dose-dependent decrease in photosynthetic activity of A. tamarense under all three ENPs and a significant growth inhibition induced by (n)ZnO. The largest reactive oxygen species (ROS) production was induced by (n)TiO(2), followed by (n)ZnO and (n)Al(2)O(3). Moreover, the PSTs production rate increased by 3.9-fold for (n)TiO(2) (p<0.01) and 4.5-fold for (n)Al(2)O(3) (p<0.01) at a concentration of 200mgL(-1). The major component, C2 was transformed to its epimer C1 and the proportion of decarbamoyl toxins increased under 200mgL(-1) of (n)ZnO and (n)Al(2)O(3). In addition, the proportion of carbamate toxins increased upon exposure to 2mgL(-1) ENPs, while decreased upon exposure to 200mgL(-1) ENPs. The changes in PSTs production and composition might be an adaptive response for A. tamarense to overcome the stress of ENPs exposure. This work brings the first evidence that ENP would affect PSTs production and profiles. CI - Copyright (c) 2017 Elsevier B.V. All rights reserved. FAU - Li, Manlu AU - Li M AD - Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; School of Environment, Tsinghua University, Beijing 100084, China. FAU - Chen, Daoyi AU - Chen D AD - Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; School of Environment, Tsinghua University, Beijing 100084, China. FAU - Liu, Yang AU - Liu Y AD - Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100039, China. FAU - Chuang, Chia Ying AU - Chuang CY AD - Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan. FAU - Kong, Fanzhou AU - Kong F AD - Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China. FAU - Harrison, Paul J AU - Harrison PJ AD - Dept Earth & Ocean Sciences, University of British Columbia, Vancouver, BC, Canada. FAU - Zhu, Xiaoshan AU - Zhu X AD - Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; School of Environment, Tsinghua University, Beijing 100084, China. FAU - Jiang, Yuelu AU - Jiang Y AD - Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; School of Environment, Tsinghua University, Beijing 100084, China. Electronic address: jiang.yuelu@sz.tsinghua.edu.cn. LA - eng PT - Journal Article DEP - 20170811 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Marine Toxins) RN - 15FIX9V2JP (titanium dioxide) RN - D1JT611TNE (Titanium) RN - LMI26O6933 (Aluminum Oxide) RN - SOI2LOH54Z (Zinc Oxide) SB - IM MH - Aluminum Oxide/pharmacology MH - Dinoflagellida/*drug effects MH - *Harmful Algal Bloom MH - Marine Toxins/*biosynthesis MH - Metal Nanoparticles/*chemistry MH - Titanium/pharmacology MH - Zinc Oxide/pharmacology OTO - NOTNLM OT - Engineered nanoparticles OT - Growth OT - Paralytic shellfish poisoning toxins OT - Photosynthesis performance OT - Reactive oxygen species EDAT- 2017/08/15 06:00 MHDA- 2018/08/15 06:00 CRDT- 2017/08/15 06:00 PHST- 2017/02/21 00:00 [received] PHST- 2017/05/17 00:00 [revised] PHST- 2017/05/19 00:00 [accepted] PHST- 2017/08/15 06:00 [pubmed] PHST- 2018/08/15 06:00 [medline] PHST- 2017/08/15 06:00 [entrez] AID - S0048-9697(17)31277-9 [pii] AID - 10.1016/j.scitotenv.2017.05.170 [doi] PST - ppublish SO - Sci Total Environ. 2018 Jan 1;610-611:356-366. doi: 10.1016/j.scitotenv.2017.05.170. Epub 2017 Aug 11.