Bacterial compatibility and immobilization with biochar improved tebuconazole degradation, soil microbiome...

Area of Science:

• Environmental Microbiology
• Soil Science
• Bioremediation

Background:

• Tebuconazole, a common fungicide, poses risks to soil health.
• Limited research exists on bioremediating tebuconazole-contaminated soil using biochar-supported bacteria.

Purpose of the Study:

• To isolate and identify a tebuconazole-degrading bacterium.
• To develop a biochar-immobilized bacterial composite for soil remediation.
• To evaluate the effectiveness of this composite in degrading tebuconazole and restoring soil health.

Main Methods:

• Isolation and identification of tebuconazole-degrading bacteria (Alcaligenes faecalis WZ-2).
• Preparation of wheat straw-derived biochar as a carrier for strain WZ-2.
• Investigation of tebuconazole biodegradation, soil enzyme activities, and microbial community structure.

Main Results:

• Strain WZ-2 and biochar-immobilized WZ-2 significantly reduced tebuconazole's half-life.
• Biochar alone slightly inhibited tebuconazole degradation.
• Biochar-immobilized WZ-2 restored soil enzyme activities and microbial community structure affected by tebuconazole.

Conclusions:

• Combining bacteria with biochar is an effective strategy for pesticide-contaminated soil remediation.
• This approach enhances soil biological health and microbial recovery.