title: sequences of bacteria
design: The V3/V4 region of 16S rRNA was amplified by specific primer 338F-806R.The primers were as follows: 338F 5-ACTCCTACGGGAGGCAGCA-3, 806R 5-GGACTACHVGGGTWTCTAAT-3.The products of PCR were sequenced on the Illumina NovaSeq 6000 platform of Shanghai Personal Biotechnology Co., Ltd (Shanghai,China) to generate the paired-end reads