PMID- 34793842
OWN - NLM
STAT- MEDLINE
DCOM- 20220126
LR  - 20220126
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 291
IP  - Pt 2
DP  - 2022 Mar
TI  - The effects of two sized polystyrene nanoplastics on the growth, physiological 
      functions, and toxin production of Alexandrium tamarense.
PG  - 132943
LID - S0045-6535(21)03415-9 [pii]
LID - 10.1016/j.chemosphere.2021.132943 [doi]
AB  - Micro- and nano-plastics (MNPs) are increasingly prevalent pollutants in marine 
      ecosystems and result in various deleterious effects on marine organisms. There 
      have been studies evaluated the toxic effects of MNPs on marine microalgae, but 
      few of them focused on the effects of MNPs on dinoflagellate species and their 
      toxins production, which could have significant implications on human health and 
      ecological safety in coastal areas. In this study, the common harmful algal 
      blooms-causing dinoflagellate Alexandrium tamarense was exposed to 0.1 and 1 mum 
      sized polystyrene nanoplastics (NPs) to investigate the responding patterns of 
      population growth, multiple physiological functions, as well as the intracellular 
      paralytic shellfish toxins (PSTs) productions. The results indicated the 
      population growth, photosynthetic parameters, nutrients (nitrate and phosphate) 
      uptake rates and extracellular carbonic anhydrase activities (CA(ext)) were all 
      inhibited by the two sized NPs, accompanied by the prolonged and more aggregated 
      microalgal cells under the observation of scanning electron microscope (SEM), and 
      the inhibition effects were more severe under 1 mum sized NPs than 0.1 mum sized 
      NPs. Finally, we found the intracellular PSTs contents increased 73.59% exposed 
      to 0.1 mum sized NPs while decreased 85.50% exposed to 1 mum sized NPs comparing 
      the controls at 96 h, without significant changes of relative compositions. These 
      results provided evidence that MNPs were toxic to A. tamarense and affected their 
      intracellular PSTs productions within 96 h, which is critical to consider when 
      evaluating the potential risks of MNPs in marine ecosystems.
CI  - Copyright (c) 2021. Published by Elsevier Ltd.
FAU - Liu, Qian
AU  - Liu Q
AD  - College of Marine Life Sciences, Department of Marine Ecology, Ocean University 
      of China, Qingdao, 266003, China.
FAU - Tang, Xuexi
AU  - Tang X
AD  - College of Marine Life Sciences, Department of Marine Ecology, Ocean University 
      of China, Qingdao, 266003, China; Laboratory for Marine Ecology and Environmental 
      Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 
      266071, China.
FAU - Zhang, Bihan
AU  - Zhang B
AD  - College of Marine Life Sciences, Department of Marine Ecology, Ocean University 
      of China, Qingdao, 266003, China.
FAU - Li, Luying
AU  - Li L
AD  - College of Marine Life Sciences, Department of Marine Ecology, Ocean University 
      of China, Qingdao, 266003, China.
FAU - Zhao, Yirong
AU  - Zhao Y
AD  - College of Marine Life Sciences, Department of Marine Ecology, Ocean University 
      of China, Qingdao, 266003, China.
FAU - Lv, Mengchen
AU  - Lv M
AD  - College of Marine Life Sciences, Department of Marine Ecology, Ocean University 
      of China, Qingdao, 266003, China.
FAU - Li, Jun
AU  - Li J
AD  - College of Marine Life Sciences, Department of Marine Ecology, Ocean University 
      of China, Qingdao, 266003, China.
FAU - Kan, Chenxiang
AU  - Kan C
AD  - College of Marine Life Sciences, Department of Marine Ecology, Ocean University 
      of China, Qingdao, 266003, China.
FAU - Zhao, Yan
AU  - Zhao Y
AD  - College of Marine Life Sciences, Department of Marine Ecology, Ocean University 
      of China, Qingdao, 266003, China; Laboratory for Marine Ecology and Environmental 
      Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 
      266071, China. Electronic address: zhaoyan@ouc.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20211115
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Microplastics)
RN  - 0 (Polystyrenes)
RN  - Alexandrium tamarense
SB  - IM
MH  - *Dinoflagellida
MH  - Ecosystem
MH  - Humans
MH  - Microplastics
MH  - *Polystyrenes
OTO - NOTNLM
OT  - Alexandrium tamarense
OT  - Nano-plastic
OT  - Paralytic shellfish toxins
OT  - Physiological functions
OT  - Size difference
EDAT- 2021/11/19 06:00
MHDA- 2022/01/27 06:00
CRDT- 2021/11/18 20:13
PHST- 2021/07/27 00:00 [received]
PHST- 2021/11/05 00:00 [revised]
PHST- 2021/11/14 00:00 [accepted]
PHST- 2021/11/19 06:00 [pubmed]
PHST- 2022/01/27 06:00 [medline]
PHST- 2021/11/18 20:13 [entrez]
AID - S0045-6535(21)03415-9 [pii]
AID - 10.1016/j.chemosphere.2021.132943 [doi]
PST - ppublish
SO  - Chemosphere. 2022 Mar;291(Pt 2):132943. doi: 10.1016/j.chemosphere.2021.132943. 
      Epub 2021 Nov 15.