The incorporation of Mg²⁺ ions into aragonite during biomineralization: Implications for the dolomitization of aragonite.

ABSTRACT: Bacteria can facilitate the increase of Mg²⁺ content in biotic aragonite, but the molecular mechanisms of the incorporation of Mg²⁺ ion into aragonite facilitated by bacteria are still unclear and the dolomitization of aragonite grains is rarely reported. In our laboratory experiments, the content of Mg²⁺ ions in biotic aragonite is higher than that in inorganically-precipitated aragonite and we hypothesize that the higher Mg content may enhance the subsequent dolomitization of aragonite. In this study, biotic aragonite was induced by Bacillus licheniformis Y₁ at different Mg/Ca molar ratios. XRD data show that only aragonite was precipitated in the media with Mg/Ca molar ratios at 6, 9, and 12 after culturing for 25 days. The EDS and atom

SUBMITTER: Han Z 

PROVIDER: S-EPMC9909399 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature