The differences between the genera of soil microorganisms in each group were highly significant ( p < 0.01), and the classifications of the soil microorganisms in the groups CK1 and CK1_R were relatively similar at the genus level, but the proportion of each genus varied greatly.
The initial concentration of substrate β -HCH had no significant effect on the final growth of the three strains ( Figure S2d ), but the degradation rate of β -HCH by the three strains showed a trend of increasing and then decreasing with further increases in the initial concentration of β -HCH ( Figure 3 d), and each strain showed the highest degradation efficiency of β -HCH at the concentration of 50 μg/L.