show Abstracthide AbstractWe have previously established a synthetic bacterial community consisting six bacterial strains, which stably and reproducibly coexist on the surface of a small aquatic plant, duckweed (Lemna minor) (Ishizawa et al., 2020, Microbes and Environments 35, ME20112). This synthetic ecosystem mimics the family-level structure of the natural duckweed microbiome, serving as a useful experimental system to study microbial community assembly. To understand the molecular basis of the stable community assembly in this synthetic ecosystem, this project sets out to obtaine complete genome sequences of the six bacterial strains.