How do freshwater microalgae and cyanobacteria respond to antibiotics?

Area of Science:

• Environmental Science
• Ecotoxicology
• Microbiology

Background:

• Antibiotic residues from anthropogenic sources contaminate freshwater ecosystems.
• These contaminants create reservoirs for antibiotic resistance development.
• Microalgae and cyanobacteria, as primary producers, are vital to monitor for antibiotic impacts.

Purpose of the Study:

• To review the effects of antibiotics on microalgae and cyanobacteria.
• To discuss adaptive mechanisms of these organisms to antibiotic exposure.
• To highlight factors influencing antibiotic removal by microalgae for technological applications.

Main Methods:

• Literature review of studies on antibiotic effects on freshwater microalgae and cyanobacteria.
• Analysis of biological processes affected: photosynthesis, oxidative stress, macromolecule metabolism.
• Examination of adaptive strategies: biodegradation, bioadsorption, bioaccumulation.

Main Results:

• Antibiotics disrupt photosynthesis, induce oxidative stress, and alter macromolecule metabolism in microalgae and cyanobacteria.
• Organisms exhibit adaptive mechanisms including biodegradation, bioadsorption, and bioaccumulation.
• Factors influencing these removal pathways are identified.

Conclusions:

• Understanding antibiotic impacts and adaptive mechanisms is crucial for aquatic ecosystem health.
• Microalgae-based technologies show promise for antibiotic removal from contaminated waters.
• Further research is needed to optimize these applications.