Abstract
In this study, exposure experiments were conducted to assess the effects of polystyrene nanoparticles (PS) and amine-modified polystyrene nanoparticles (APS) at environmental concentrations (1, 10, and 100 µg L− 1) on two fungal species (Geotrichum candidum and Aspergillus niger), isolated from leaf litter in streams, concerning their growth and metabolic activity. Results showed that PS at 1 and 10 µg L− 1 have hormesis effects on G. candidum growth. Compared with G. candidum, A. niger had higher sensitivity to nanoplastic exposure. Besides, the peroxidase and cellobiohydrolase activities of A. niger were significantly inhibited by nanoplastics (except 1 µg L− 1 PS), which would weaken its metabolic activity in carbon cycling. These results provided a new thought on how the growth and functions of aquatic fungi cope with the stress induced by nanoplastics. Overall, the study provided evidence for the different responses of aquatic fungi to nanoplastics in streams.
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Acknowledgements
This work was supported by the Fund of Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain (No.22-035-26), Grants from the Science and Technology Project of Henan Province, China (212102310515, 222102320261), National Natural Science Foundation of China (31500377, 32271701), and Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province (XTCX-010).
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Qv, W., Wang, X., Li, N. et al. How do the Growth and Metabolic Activity of Aquatic fungi Geotrichum Candidum and Aspergillus Niger Respond to Nanoplastics?. Bull Environ Contam Toxicol 109, 1043–1050 (2022). https://doi.org/10.1007/s00128-022-03625-0
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DOI: https://doi.org/10.1007/s00128-022-03625-0