Effects of microcystin-LR and nitrite on the lifespan, reproduction, and heat shock responses of rotifer Brachionus calyciflorus at different temperatures

Liang, Yong; Gao, Tianheng; Shao, Li; Min, Yuanqi; Yang, Jiaxin

doi:10.1007/s00027-020-00748-6

Cited by 8 publications

(1 citation statement)

References 47 publications

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“…Although the individual effects of toxic CYBs and thermal stress on aquatic animals have been well characterized, there is a lack of information on the combined effects of toxic CYBs and elevated temperatures. Previous studies have assessed the toxicity of cyanobacteria at different temperatures in aquatic animals, including zebrafish (Danio rerio), mussels (Hyriopsis cumingii), freshwater daphnids (Moina macrocopa) and rotifers (Brachionus calyciflorus), indicating that the combined effects of temperature and cyanotoxins are complicated and species-specific [9][10][11][12][13]. Consequently, a comprehensive understanding of the combined impacts of toxic cyanobacteria and thermal stress on various aquatic organisms will provide a broader perspective on the sustainability of aquatic ecosystems.…”

Section: Introductionmentioning

confidence: 99%

The Combined Effects of Toxic Microcystis aeruginosa and Thermal Stress on the Edible Clam (Corbicula fluminea): Insights into Oxidative Stress Responses and Molecular Networks

Zhang,

Wang,

Zhang

et al. 2023

Antioxidants

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Cyanobacterial blooms (CYBs) have become a global environmental issue, posing risks to edible bivalves. Toxic cyanobacteria and thermal stress represent the two key co-occurring stressors to bivalves experiencing CYBs. To investigate the combined effects of these stressors on the edible bivalve Corbicula fluminea, the responses to oxidative stress and the molecular mechanisms of physiological adaptations in C. fluminea were examined under co-exposure to toxic Microcystis aeruginosa and thermal stress. The activity of antioxidant enzymes, including GST, SOD, CAT, GPx and GR, was significantly influenced by the interaction between temperature and M. aeruginosa (p < 0.05). A positive correlation was observed between toxic M. aeruginosa exposure and elevated SOD and GPx activities at 30 °C, demonstrating that SOD and GPx may help C. fluminea defend effectively against MCs under thermal stress. Furthermore, significant interactive effects between toxic M. aeruginosa and temperature were also observed in ROS and MDA (p < 0.05). The results of the PCA and IBR index also evidenced the apparent influence of toxic M. aeruginosa and thermal stress on oxidative stress responses of C. fluminea. The eggNOG and GO annotations confirmed that a substantial portion of differentially expressed genes (DEGs) exhibited associations with responses to oxidative stress and transporter activity. Additionally, KEGG analysis revealed that abundant DEGs were involved in pathways related to inflammatory responses, immune functions and metabolic functions. These findings improve our understanding of the mechanism of the physiological adaptation in bivalves in response to cyanotoxins under thermal conditions, potentially enabling the evaluation of the viability of using bivalves as a bioremediation tool to manage CYBs in eutrophic waters.

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