DNA was extracted using a QIAmp DNA Mini kit (QIAGEN, Hilden, Germany) according to the manufacturer’s instructions. DNA was used to construct a library using a Nextera XT DNA Library Prep Kit (Illumina, San Diego, CA) [12 (link)]. Library pools were then loaded on an Illumina NextSeq CN500 sequencer for 75 cycles of single-end sequencing of 20 million reads for each library, and sequence data were compared with those in a current bacterial and fungal database (NCBI; ftp://ftp.ncbi.nlm.nih.gov/genomes).
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