Diversity and ecology of and biomineralization by magnetotactic bacteria

Diversity and ecology of and biomineralization by magnetotactic bacteria.

Magnetotactic bacteria (MTB) biomineralize intracellular, membrane-bounded crystals of magnetite (Fe3 O4 ) and/or greigite (Fe3 S4 ) called magnetosomes. MTB play important roles in the geochemical cycling of iron, sulfur, nitrogen and carbon. Significantly, they also represent an intriguing model system not just for the study of microbial biomineralization but also for magnetoreception, prokar...

Mossbauer Spectroscopy of Iron Biomineralization Products in Magnetotactic Bacteria

Mcissbauer spectroscopy is a nuclear i-rav resonance technique that has been extensively tv!i 'iill' s,,'stems. applied to the study of the electronic properties of iron in biological '. The power of the technique lies in its sensitivity to the effects of the physical environment (nature ]18 lw and disposition of ligands, magnetic structure, etc.) on 57Fe nuclei. Moreover, it is sensitive ' onl...

Life with compass: diversity and biogeography of magnetotactic bacteria.

Magnetotactic bacteria (MTB) are unique in their ability to synthesize intracellular nano-sized minerals of magnetite and/or greigite magnetosomes for magnetic orientation. Thus, they provide an excellent model system to investigate mechanisms of biomineralization. MTB play important roles in bulk sedimentary magnetism and have numerous versatile applications in paleoenvironmental reconstructio...

Magnetotactic bacteria and magnetosomes.

Biomineralization, crystallography and magnetic properties of bullet-shaped magnetite magnetosomes in giant rod magnetotactic bacteria

a Biogeomagnetism Group, Key Laboratory of the Earth's Deep Interior, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China b France-China Bio-Mineralization and Nano-Structures Laboratory, Beijing 100029, China c Laboratoire de Microscopies et d'Etude de Nanostructures (LMEN), Université de Reims, 59687 Reims, France d Institut de Minéralogie et Physique des M...