Deltamethrin transformation by Bacillus thuringiensis and the associated metabolic pathways

Area of Science:

• Microbiology
• Biochemistry
• Environmental Science

Background:

• Deltamethrin's molecular toxicity is known, but its impact on cellular proteomes across species remains unclear.
• Understanding microbial responses to pesticides is crucial for environmental remediation.

Purpose of the Study:

• To investigate the proteome expression and metabolic pathways of Bacillus thuringiensis during deltamethrin transformation.
• To elucidate the regulatory network and stress response mechanisms involved in deltamethrin degradation.

Main Methods:

• Proteomics and metabolomics approaches were employed.
• Analysis of differential protein expression and metabolic pathway alterations.

Main Results:

• Bacillus thuringiensis removed deltamethrin within 48 hours.
• Significant protein expression changes were observed in DNA synthesis, shock proteins, endospore formation, and carbon metabolism.
• Deltamethrin transformation inhibited DNA/protein synthesis and carbohydrate metabolism but promoted endospore formation for oxidative stress resistance.

Conclusions:

• Deltamethrin exposure triggers specific stress responses in Bacillus thuringiensis.
• Microbial transformation of deltamethrin involves complex metabolic and regulatory network adjustments.
• Findings provide insight into organismal stress responses and contaminant interactions at pathway and network levels.