Journal
MARINE POLLUTION BULLETIN
Volume 161, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2020.111806
Keywords
Aureococcus anophagefferens; Perna viridis; Detoxification system; Dopamine receptor
Funding
- National Key Research and Development Program [2019YFC1407901]
- National Natural Science Foundation of China [41776120]
- National Marine Public Welfare Project of China [201305003]
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The brown tide formed by a microscopic alga called Aureococcus anophagefferens has a devastating effect on filter feeding bivalves, however, the related toxic principle remains an open question. In this study, we found that A. anophagefferens cells could motivate detoxification associated genes including CYP450, GST, P-gp and MVP, and induce SOD activity in the mussel Perna viridis. D1-like and D2-like receptors were expressed at high level in the gills of P. viridis, however, D2-like receptor transcript was too low to detect in digestive gland. The exposure of A. anophagefferens did not lead to any significant alterations in the expression of D1-like and D2-like receptors in both gills and digestive gland. These findings suggested that A. anophagefferens exhibited cytotoxicity toward bivalves, but did not obviously disrupt the dopamine system at transcriptional level in the acute exposure. Further studies are warranted to explore the nature of toxic compounds in A. anophagefferens affected bivalves.
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