DNA was isolated using a DNeasy UltraClean microbial kit (Qiagen, Venlo, The Netherlands). Nanopore sequencing was performed according to protocol SQK-RBK110.96 with Flow Cell version R9.4.1 on a MinION device (FLO-MIN106D; Oxford Nanopore, Oxford, UK), using the super-accurate base-calling method in MinKNOW v22.12.7. Reads were trimmed and downsampled to 200× coverage using filtlong (https://github.com/rrwick/Filtlong, accessed on 6 January 2024) and assembled into circular contigs using Flye v2.9.1 [52 (link)]. Genomes were polished using Medaka v.1.1.0 (https://github.com/nanoporetech/medaka, accessed on 6 January 2024) and Homopolish (https://github.com/ythuang0522/homopolish?tab=readme-ov-file, accessed on 6 January 2024) [53 (link)] and annotated using Prokka v1.14.5 [54 (link)].
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