FIG 2.

C. closterium and V. cholerae coculture. (A) Cell abundance (cells mL⁻¹) of V. cholerae with C. closterium (yellow) and V. cholerae f/2-medium PHSW (gray) over a 14-day period. (B) C. closterium abundance (cells mL⁻¹) between the axenic control (orange line) and coculture (yellow) over a 14-day period. Data for panels A and B are the mean ± standard error (n = 4). *, significant differences (repeated measure ANOVA, P < 0.05). (C) DOC (ng C mL⁻¹) of C. closterium axenic cultures (orange) was sampled on days 0, 8, and 14 alongside a control of f/2-medium (pink). (D) DOC per cell of C. closterium (pg C cells⁻¹) axenic cultures. Data for panels C and D are the mean ± standard error (n = 3).