Bioaugmentation of acetamiprid-contaminated soil with Pigmentiphaga sp. strain D-2 and its effect on the soil microbial community

摘要: Bioaugmentation, a strategy based on microbiome engineering, has been proposed for bioremediation of pollutant-contaminated environments. However, the complex engineering processes soil bioaugmentation, involving interactions among exogenous inoculum, environment, and indigenous microbial microbiome, remain largely unknown. Acetamiprid is widely used neonicotinoid insecticide which caused environmental contaminations. Here, we an acetamiprid-degrading strain, Pigmentiphaga sp. D-2, as inoculum to investigate effects bioaugmentation community process reassembly. The treatment removed 94.8 92.5% acetamiprid within 40 days from soils contaminated with 50 200 mg/kg acetamiprid, respectively. A decrease in bacterial richness diversity was detected treatments, later recovered removal soil. Moreover, significantly influenced structure, whereas application alone had little influence community. Furthermore, improved growth bacteria associated degradation, inoculated recruited taxa keystone resulting reassembly yielding higher efficiency than that acetamiprid-treated communities. Our results provide valuable insights into mechanisms acetamiprid-contaminated soils.