Impact of Salinity on Cell Surface Chemistry of Cyanobacteria From Freshwater, Marine and Alkaline Environments: A Hidden Phosphorus Engine.

ABSTRACT: Climate change is altering ocean salinity, impacting cyanobacteria, key primary producers with vital ecological roles. While cyanobacterial adaptations to salinity are well studied, molecular cell surface chemistry changes remain underexplored. This study examines the impact of salinity on surface properties of freshwater Synechocystis sp. PCC6803, marine Synechococcus sp. PCC8806 and alkaliphilic Spirulina platensis. Species were cultured under salinities of 2‰, 6‰, 10‰, 30‰ and 60‰. Surface chemical composition and content were characterised using infrared and x-ray photoelectron spectroscopy and potentiometric titration. All strains exhibited salinity-dependent changes in surface charge and functional group expression, reflecting distinct adaptation strategies. In non-marine strains, sa

SUBMITTER: Aceituno-Caicedo D 

PROVIDER: S-EPMC12482097 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature