Interaction between CO2/HCO3- and the iron homeostasis in Corynebacterium glutamicum

Abstract

This work demonstrates, that the chemical iron reduction through phenolic compounds is accelerated in the presence of HCO3-. By that, the intracellular Fe2+ concentration was increased and growth was stimulated in C. glutamicum. Phenolic compounds, which were tested as the reductant in this study, are wide spread in nature and the same habitats can be characterised by high CO2/HCO3- contents. Hence, it can be concluded that the abiotic effect described here impacts other biological as well as geochemical systems.