Bakterie magnetotaktyczne i ich minerały

Abstract

Magnetotactic bacteria and their minerals.A b s t r a c t. Magnetotactic bacteria (MTB) produce magnetic minerals, magnetite (Fe3O4) and greigite (Fe3S4) in their cells. These magnetosome crystals form chains which allow bacterial cells to align with the Earth magnetic field. Magneto-aerotaxis allows bacteria to find optimal growth conditions in the water column. MTB species and their habitats are described, along with the description of minerals and the origin of magnetosomes. Fossil MTB are used to solve different geological problems they especially influence rock magnetism. Cultured magnetotactic bacteria and their nanominerals find more and more applications in many disciplines