Ecology, Diversity, and Evolution of Magnetotactic Bacteria
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TLDR
The purpose of this review is focused on the diversity and the ecology of the MTB and also the evolution and transfer of the molecular determinants involved in magnetosome formation.Abstract:
SUMMARY Magnetotactic bacteria (MTB) are widespread, motile, diverse prokaryotes that biomineralize a unique organelle called the magnetosome. Magnetosomes consist of a nano-sized crystal of a magnetic iron mineral that is enveloped by a lipid bilayer membrane. In cells of almost all MTB, magnetosomes are organized as a well-ordered chain. The magnetosome chain causes the cell to behave like a motile, miniature compass needle where the cell aligns and swims parallel to magnetic field lines. MTB are found in almost all types of aquatic environments, where they can account for an important part of the bacterial biomass. The genes responsible for magnetosome biomineralization are organized as clusters in the genomes of MTB, in some as a magnetosome genomic island. The functions of a number of magnetosome genes and their associated proteins in magnetosome synthesis and construction of the magnetosome chain have now been elucidated. The origin of magnetotaxis appears to be monophyletic; that is, it developed in a common ancestor to all MTB, although horizontal gene transfer of magnetosome genes also appears to play a role in their distribution. The purpose of this review, based on recent progress in this field, is focused on the diversity and the ecology of the MTB and also the evolution and transfer of the molecular determinants involved in magnetosome formation.read more
Citations
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Journal ArticleDOI
Continuous Production of Biogenic Magnetite Nanoparticles by the Marine Bacterium Magnetovibrio blakemorei Strain MV-1T with a Nitrous Oxide Injection Strategy
TL;DR: In this paper , a new approach for bioreactor cultivation of magnetovibrio blakemorei strain MV-1T was described, which prevented a decrease in magnetite production in comparison to the fed-batch strategy.
Book ChapterDOI
Collection and Enrichment of Magnetotactic Bacteria from the Environment
TL;DR: In this paper, the authors describe a relatively inexpensive and effective method for collecting magnetotactic bacteria (MTB) from the field, which relies on the use of simple magnets and a clear plastic container can be used to collect sediment and water from a natural source.
Journal ArticleDOI
Membrane-Bound Compartments in Bacteria: Membrane-bound structures within gram-negative photosynthetic and magnetotactic bacteria help overturn an old dogma about prokaryotes
TL;DR: Once thought to be mere bags of enzymes, bacterial cells are remarkably more complex and have been classified as having complex cell structures, including cytoskeletons and intracellular membrane-bounded organelles.
Posted ContentDOI
Detection and Characterization of Magnetosome Chains In Magnetotactic Bacteria
TL;DR: In this research, the bacteria were able to sustain in artificial oxygen-transition zones provided in the laboratory, and Scanning electron microscope analysis confirmed the presence of magnetosome chains in magnetotactic bacteria.
Journal ArticleDOI
Isolation, microscopic and magnetotactic characterization of Magnetospirillum moscoviense MS-24 from Banjosa Lake, Pakistan
TL;DR: The first magnetotactic bacteria, magnetospirillum moscoviense MS-24, was isolated from Banjosa Lake (Rawalakot), Pakistan, in the current investigation as mentioned in this paper .
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