Fig 2. Presence of eDNA in preformed biofilms of Xcc.
Representative light (CV staining) and fluorescence (SYTO-9 staining) images of mature biofilms on LB or XVM2 media. Both Xcc 306 and Xcc 12879 Aw strains were more aggregated in XVM2 than LB. A high level of aggregation for strain Xcc 12879 Aw in XVM2 made it difficult to observe eDNA fibers in aggregates. In XVM2, strain Xcc 306 was less aggregated and CV and SYTO-9 staining revealed eDNA surrounding the cells. In LB both staining revealed long fibers interconnecting aggregates.