The arsenic bioremediation using genetically engineered microbial strains on aquatic environments: An updated...

Area of Science:

• Environmental Microbiology
• Biotechnology
• Aquatic Toxicology

Background:

• Heavy metal contamination, particularly arsenic (As), poses significant risks to aquatic ecosystems and human health.
• Conventional physical and chemical remediation methods are often costly, time-consuming, and less effective in highly polluted areas.
• Bioremediation presents a sustainable and aquatic-friendly alternative for treating heavy metal contamination.

Purpose of the Study:

• To review bacterial interactions and mechanisms for arsenic (As) bioremediation in aquatic environments.
• To explore the potential of genetically engineered bacterial strains for enhanced arsenic detoxification.
• To identify challenges and suggest future research directions for arsenic bioremediation using bacteria.

Main Methods:

• Extensive literature review on bacterial arsenic resistance and detoxification pathways.
• Analysis of genetic engineering strategies to enhance bacterial arsenic removal capabilities.
• Examination of factors influencing bacterial arsenic bioremediation in aquatic settings.

Main Results:

• Bacteria possess active metabolic and genetic mechanisms to target and detoxify arsenic (As).
• Genetically engineered bacterial strains can upregulate specific genes for improved arsenic detoxification.
• Arsenic resistance mechanisms vary based on bacterial genetics and environmental conditions.

Conclusions:

• Bacteria, especially genetically modified strains, hold significant potential for arsenic (As) bioremediation in aquatic bodies.
• Understanding bacterial-arsenic interactions is crucial for developing effective bioremediation strategies.
• Further research is needed to overcome obstacles for the widespread application of bacterial bioremediation in open water systems.