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. 2026 Mar 30;208(4):e00345-25. doi: 10.1128/jb.00345-25

Fig 1.

Multi-panel line graphs demonstrate H. volcanii metabolic activity over time. Live cells show Fe oxide reduction reaching 40%, lactate consumption declining to 3 mM, and pyruvate accumulation to 1.8 mM while controls remain stable.

Significant reduction of Fe(III) oxides by H. volcanii. (A) The ratio of Fe(II)/Fe-total; (B) pH; (C) the concentration of lactate; (D) the concentration of pyruvate; (E) the concentration of protein. Error bars represent standard deviations from triplicate experiments.