Bacterial 16S rRNA gene amplicons derived from soils exposure to AM for 7 days
Air-dried soil was filled into each polypropylene container for pot experiments. Brassica chinensis seeds were sown per pot. About two weeks after germination, a mixture solution of  Tetracycline, Ciprofloxacin and sulfamonomethoxine (AM) were applied to the soil surface by watering. Bulk soils were sampled at day 7 after AM application. Soils were subjected to DNA extraction. The V3-V4 region of the 16S rDNA was selected for PCR amplification with the 338F/806R primer set. Primer 338F: 5'-ACTCCTACGGGAGGCAGC-3' Primer 806R: 5'-GGACTACHVGGGTWTCTAAT-3'