Figure 5From: Environmental transcriptome analysis reveals physiological differences between biofilm and planktonic modes of life of the iron oxidizing bacteria Leptospirillum spp. in their natural microbial communityL. ferrooxidans cultivated in the presence of glucose, arabinose and acetate. L. ferrooxidans was cultivated in Mckintosh medium with 2% (w/v) iron sulfate (closed diamonds ♦), or 2% iron sulfate supplemented with 0.1% glucose (open circles ○), 0.1% arabinose (closed circles ●), or 1 mM acetate (closed triangles ▲), and the growth monitored by measuring iron oxidation at OD410 nm. All the cultures were inoculated with 1.9 × 105 cells ml-1. After 48 h, the cell number clearly increased (dashed lines) with respect to the starting inoculums (1.9 × 105 cells ml-1).Back to article page