title: MBfRMetagenome
design: Genomic DNA was extracted by Guangdong Magigene Biotechnology Co.,Ltd. (Guangzhou, China) usingcommercial kits according to the manufacturers instructions. DNA integrity and purity were monitored on 1%agarose gels. DNA concentration and purity were measured using Qubit 2.0 (Thermo Fisher Scientific,Waltham, USA) and Nanodrop One(Thermo Fisher Scientific, Waltham, USA) at the same time.