Complete genome sequence of Stenotrophomonas rhizophila KC1, a quorum sensing-producing algicidal bacterium, isolated from mangrove Kandelia candel.

This paper describes the isolation of an algicidal strain, Stenotrophomonas rhizophila KC1, from mangrove (Kandelia candel), and its genome, which was sequenced using next-generation sequencing technology. The genome is 5.93 Mb with a G+C content of 63.17%. A total of 3,352 functional proteins were assigned according to KEGG categories. A total of 11,586 protein coding genes, 73 tRNA genes, and 17 rRNA genes were obtained. In silico genome annotation protocols identified 83 putative quorum sensing (QS) genes, and the algicidal potential of KC1 was related with the QS genes (for example LuxI-LuxR genes). Collectively, these data suggest that KC1 may be an antialgal bacterium whose behavior can be modulated by QS signaling. The annotated genome sequence of this strain may represent a valuable tool for studying algae-bacteria interactions and developing microbe-based methods for controlling harmful algae.