Skip to main content

ORIGINAL RESEARCH article

Front. Mar. Sci.
Sec. Marine Pollution
Volume 11 - 2024 | doi: 10.3389/fmars.2024.1494930
This article is part of the Research Topic Marine Microplastics and their epibiotic Microorganisms (MMM) View all 3 articles

Ocean acidification enhances the tolerance of dinoflagellate Prorocentrum donghaiense to nanoplastic-induced oxidative stress by modulating photosynthetic performance

Provisionally accepted
Yue Zhu Yue Zhu 1Qingming Lin Qingming Lin 1Yao Yang Yao Yang 1Yanmei Xia Yanmei Xia 1Huidi Cai Huidi Cai 1Xucong Feng Xucong Feng 1Rodrigo J. Gonçalves Rodrigo J. Gonçalves 2Wanchun Guan Wanchun Guan 1*
  • 1 School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
  • 2 CONICET Centro de Estudios de Sistemas Marinos (CESIMAR), Puerto Madryn, Chubut, Argentina

The final, formatted version of the article will be published soon.

    The impact of ocean acidification (OA) and nanoplastics (NPs) on harmful algal blooms (HAB) has emerged as a major global concern. However, the combined effects of OA and NPs on the HAB species are poorly understood. In this study, dinoflagellate Prorocentrum donghaiense, a typical HAB species, was exposed to varying concentrations of NPs (108. 15 ± 8.52 nm) (0, 5, 10, and15 mg L -1 ) andCO2 (low CO2: 417 ppm, pH: 8.00 andhigh CO2: 1045 ppm, pH: 7.73) for seven days to investigate the combined effects of OA and NPs. The findings revealed that NPs inhibited the growth of P. donghaiense by inducing oxidative stress, as indicated by elevated malondialdehyde (MDA) content and decreased carotenoid/chlorophylla ratio, even though photochemical efficiency (φP0, ψ0, and φE0), rETRmax and α were enhanced in response to NPs stress. However, OA promoted the growth and alleviated the adverse effects of NPs on P. donghaiense by increasing photochemical efficiency (φP0, ψ0, and φE0) and energy flux (RC/CS0, TR0/CS0, ET0/CS0) and enhancing the antioxidant ability (increased superoxide dismutase, and decreased MDA). P. donghaiense showed enhanced tolerance to NPs under simulated OA conditions. These findings enhance our knowledge of the HAB species response to NPs pollution under future OA scenarios.

    Keywords: Prorocentrum donghaiense, nanoplastics, ocean acidification, Photosynthesis, harmful algal blooms

    Received: 11 Sep 2024; Accepted: 28 Oct 2024.

    Copyright: © 2024 Zhu, Lin, Yang, Xia, Cai, Feng, Gonçalves and Guan. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Wanchun Guan, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.