Limits RegistryPUBLIC RECORD
Limits RegistryThe archaeon Picrophilus torridus, isolated from acidic soils in Japan, grows optimally at around pH 0.7 and can tolerate environments approaching pH 0 — among the most acidophilic organisms known, requiring highly specialized membrane and protein adaptations to prevent internal acidification.
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The archaeon Picrophilus torridus, isolated from acidic soils in Japan, grows optimally at around pH 0.7 and can tolerate environments approaching pH 0 — among the most acidophilic organisms known, requiring highly specialized membrane and protein adaptations to prevent internal acidification.
The lowest confirmed environmental pH at which an actively growing, metabolizing microorganism has been documented, as reported in extremophile microbiology literature.
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Permanent ID limitsregistry.com/limits/LR-LOWEST-PH-TOLERATED-BY-LIVING-ORGANISM
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Limits Registry. LR-LOWEST-PH-TOLERATED-BY-LIVING-ORGANISM. Lowest environmental pH known to support active microbial life. 2026.