We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
[Regulation mechanism of ocean acidification on key physiological processes of microalgae and the effect of environmental factors: A review].
AI summary Read the abstract
This Chinese review examines how ocean acidification affects key physiological processes in microalgae, including photosynthesis, calcification, and nutrient uptake. Researchers synthesize how decreasing seawater pH alters phytoplankton physiology and interacts with other environmental stressors.
The inputs of carbon dioxide from anthropogenic activities to ocean through the sea-air interface exchange disturbs the balance of seawater carbonate system, resulting in ocean acidification (OA). OA affects the physical and chemical properties of both seawater and marine pollutants, which significantly regulates the physiological processes of planktonic algae living on the surface of ocean. As the main primary producers, the physiological function and processes of marine algae play an important role in marine ecosystem. We reviewed the underlying mechanisms of OA on the three key physiological processes of photosynthetic carbon fixation, calcification and nitrogen fixation of marine microalgae. OA could alter environmental factors (e.g., solar radiation, temperature, nutrient elements) and typical marine contaminants (e.g., organic contaminants, heavy metals, microplastics). We further summarized the effects of these factors on the regulation of physiological processes of microalgae. Finally, current research status and prospects for future research were addressed. This review provided important information for better understanding the potential impacts of OA on marine ecosystems.
More Papers Like This
Calcium-mediated mitigation of aged nanoplastic-induced stress in microalgae: Insights into photosynthesis, energy metabolism, and antioxidant defense from physiological and multi-omics analyses
AI summary Read the abstract
Scientists found that tiny plastic particles (nanoplastics) severely damage microalgae, which are important organisms used to clean wastewater before it enters our water supply. However, adding calcium to the water protected the microalgae from this plastic pollution and helped them continue removing harmful substances from wastewater. This research suggests calcium could help maintain clean water treatment systems even as plastic pollution increases in our environment.
Ocean acidification enhances microplastic uptake and alters physiological responses in Manila clams
AI summary Read the abstract
Researchers found that ocean acidification (pH 7.6) impaired particle selection in Manila clams, leading to greater microplastic retention in the digestive tract, while filtration and respiration rates were maintained at higher levels under acidified conditions, suggesting suppressed stress responses and a synergistic interaction between ocean acidification and microplastic pollution.
Impacts of microplastic and seawater acidification on unicellular red algae: Growth response, photosynthesis, antioxidant enzymes, and extracellular polymer substances
AI summary Read the abstract
Researchers examined the individual and combined effects of polystyrene microplastics and seawater acidification on unicellular red algae, which play an important role in marine primary production. They measured impacts on growth, photosynthesis, antioxidant enzyme activity, and extracellular polymer production. The study found that the combined stressors had more pronounced effects than either one alone, suggesting that ocean acidification may worsen the ecological impact of microplastic pollution on marine algae.
Elevated pCO2 alleviates the toxic effects of polystyrene nanoparticles on the marine microalga Nannochloropsis oceanica
AI summary Read the abstract
Researchers found that simulated ocean acidification (elevated CO2) significantly reduced the toxicity of polystyrene nanoparticles to the marine microalga Nannochloropsis oceanica, likely because acidic conditions caused nanoparticles to aggregate into larger, less bioavailable clusters and promoted ribosomal protein synthesis that helped cells cope with nanoparticle stress.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.