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Mg-rich calcite-producing marine bacterium Pseudovibrio sp. isolated from an ascidian in coral reefs at Okinawa, Japan.
- Source :
- Fisheries Science; Sep2022, Vol. 88 Issue 5, p625-634, 10p
- Publication Year :
- 2022
-
Abstract
- Since the beginning of the last century, bacteria, including cyanobacteria, have been known to be involved in the extracellular formation and precipitation of CaCO<subscript>3</subscript>. It is also known that some marine bacteria form calcite granules in Ca-containing artificial media. However, a detailed analysis of these granules has not yet been performed. The objective of the present study was to isolate marine bacteria that form CaCO<subscript>3</subscript> granules in a culture medium to analyze the structure of the granules in detail. Pseudovibrio sp. 01OK 105-5-5, belonging to the class Alphaproteobacteria, was isolated from an ascidian in a coral reef at On-na, Okinawa, Japan. It produced extracellular granules of CaCO<subscript>3</subscript> in a Ca-containing artificial medium. X-ray diffraction analysis, infrared spectroscopy, and inductively coupled plasma atomic emission spectrometry demonstrated that the extracellular granules contained Mg-rich calcite-like crystal polymorphs. This crystal form of CaCO<subscript>3</subscript> was similar to that of Mg-rich calcite found in the skeletons of many marine invertebrates. This bacterium provides a promising tool for studying the mechanisms involved in the formation of Mg-rich biogenic calcite. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09199268
- Volume :
- 88
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Fisheries Science
- Publication Type :
- Academic Journal
- Accession number :
- 159000512
- Full Text :
- https://doi.org/10.1007/s12562-022-01627-9