metatranscriptome of enrichment culture indubated under a gas/liquid ratio of 49
Sequencing libraries were generated using NEB Next Ultra DNA Library Prep Kit for Illumina (New England Biolabs, MA, USA) following manufacturer's recommendations and index codes were added. The library quality was assessed on the Qubit 3.0 Fluorometer (Life Technologies, Grand Island, NY) and Agilent 4200 (Agilent, Santa Clara, CA) system. At last, the library was sequenced on an Illumina Hiseq NovaSeq 6000 platform and 150 bp paired-end reads were generated.