Metabolic and Morphological Aspects of Adaptation of Alkaliphilic Bacillus aequororis 5-DB and Alkali-Tolerant Bacillus subtilis ATCC 6633 to Changes in pH and Mineralization.

ABSTRACT: The goal of the study is to evaluate metabolic and morphological changes of the facultative alkaliphile Bacillus aequororis 5-DB and the weakly alkali-resistant B. subtilis ATCC 6633 in a wide pH range and at different NaCl concentrations. The alkaliphile B. aequororis 5-DB is shown to have a broader general resistance to adverse factors (wide pH range, 50 g/L NaCl) than a weakly alkali-tolerant strain of the same genus. This alkaliphile is also shown to have a significantly greater resistance not only to high pH but also to low pH in comparison with B. subtilis ATCC 6633. The resistance of B. aequororis 5-DB to low pH was expressed in higher metabolic activity, maintenance of ΔpH, and no significant cell damage. The selected set of methods (reduction of

SUBMITTER: Maksimova Y 

PROVIDER: S-EPMC11288695 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature