Fig. S5.

Role of ferritin in O. tauri cell survival under iron limitation and low light. (A) Cell survival of WT and ΔFtn cells grown in Mf medium containing 1 nM Fe(III) citrate in the presence of increasing concentrations of DFOB under light irradiance of 20 µmol⋅quanta⁻¹⋅m⁻²⋅s⁻¹. Cell abundances were determined by flow cytometry. (B) Cells entrained under 12-h/12-h light/dark (LD) conditions for 5 d were transferred to constant light (LL) corresponding to circadian free-running conditions of constant light. Data shown are mean ± SD (n = 4). No significant differences in cell abundances between WT and ΔFtn were determined by multiple t-tests using the Holm–Sidak method, α = 0.5%.