Spatiotemporal Impacts of Enceladus- and Earth-relevant Ammonia Gas On Cultivation of Extremophile Halomonas meridiana.

ABSTRACT: One underexplored aspect of microbial growth is the impact of toxic gases transported through the atmosphere. Ammonia is a gas that can supply essential nitrogen but also exert cellular toxicity. Ammonia volatilized from a concentrated source into surrounding environments is therefore a crucial consideration when assessing the capacity of environments to support life, such as within terrestrial environments polluted with ammonia, or the ice crusts above ammonia-water oceans of icy moons. We cultivate Halomonas meridiana proximal to an ammonia source and examine the impact of ammonia volatilization on growth. Lower cell densities (OD₆₀₀ = 0-1) occurred nearest the ammonia source. At 24 h, wells exhibiting an OD₆₀₀ = 0-0.5 were evident when ammonia concentrations were ≥

SUBMITTER: Hopton CM 

PROVIDER: S-EPMC12537597 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature