Multiple Evolutionary Origins of Magnetotaxis in Bacteria

@article{Delong1993MultipleEO,
  title={Multiple Evolutionary Origins of Magnetotaxis in Bacteria},
  author={Edward F. Delong and Richard B. Frankel and Dennis A. Bazylinski},
  journal={Science},
  year={1993},
  volume={259},
  pages={803 - 806}
}
Magnetosomes are intracellular, iron-rich, membrane-enclosed magnetic particles that allow magnetotactic bacteria to orient in the earth's geomagnetic field as they swim. The magnetosomes of most magnetotactic bacteria contain iron oxide particles, but some magnetotactic species contain iron sulfide particles instead. Phylogenetic analyses of small subunit ribosomal RNA sequences showed that all known magnetotactic bacteria of the iron oxide type are associated with the a subgroup of the… 
Formation of magnetosomes in magnetotactic bacteria.
  • D. Schüler
  • Materials Science
    Journal of molecular microbiology and biotechnology
  • 1999
TLDR
This paper will outline aspects of the physiology and molecular biology of magnetosome formation, and the biotechnological potential of the biomineralization process is discussed.
Mechanisms and evolution of magnetotactic bacteria
TLDR
The mutant phenotypes of the five mutants include the complete absence of magnetosomes, elongate crystals, reduced numbers of crystals and incomplete mineralization, which extends the environmental range of MB to astro- and paleobiologically relevant environments.
Genetics and cell biology of magnetosome formation in magnetotactic bacteria
TLDR
A total of 28 conserved genes present in various magnetic bacteria were identified to be specifically associated with the magnetotactic phenotype, most of which are located in the genomic magnetosome island.
Genetics and cell biology of magnetosome formation in magnetotactic bacteria.
TLDR
A total of 28 conserved genes present in various magnetic bacteria were identified to be specifically associated with the magnetotactic phenotype, most of which are located in the genomic magnetosome island.
Copper association with iron sulfide magnetosomes in a magnetotactic bacterium
Greigite (Fe3S4) and pyrite (FeS2) particles in the magnetosomes of a many-celled, magnetotactic prokaryote (MMP), common in brackish-to-marine, sulfidic, aquatic habitats, contained relatively high
Electron microscopic studies of magnetosomes in magnetotactic bacteria
Electron microscopic studies on magnetosomes in magnetotactic bacteria have revealed much information on their composition, structure, and even the formation of their mineral phase. The mineral
Bacterial magnetosomes: microbiology, biomineralization and biotechnological applications
TLDR
This review will outline aspects of the physiology and molecular biology of the biomineralization process and potential biotechnological applications of magnetotactic bacteria and their magnetosomes.
Ecology, Diversity, and Evolution of Magnetotactic Bacteria
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.
Synthesis of the bacterial magnetosome: the making of a magnetic personality.
  • D. Bazylinski
  • Geology
    International microbiology : the official journal of the Spanish Society for Microbiology
  • 1999
TLDR
The apparent biological advantage of magnetotaxis is that it aids cells in more efficiently locating and maintaining position in vertical chemical gradients common in many natural aquatic environments.
The biomineralization of magnetosomes in Magnetospirillum gryphiswaldense
  • D. Schüler
  • Biology
    International microbiology : the official journal of the Spanish Society for Microbiology
  • 2002
TLDR
The magnetosome membrane (MM) in Magnetospirillum gryphiswaldense contains a number of specific Mam proteins, which are highly conserved in other MTB but display low sequence similarity to any proteins from nonmagnetic organisms.
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References

SHOWING 1-10 OF 25 REFERENCES
Magnetic iron-sulphur crystals from a magnetotactic microorganism
IN all magnetotactic microorganisms studied so far, the geomagnetic field is detected by magnetic particles with a permanent magnetic moment. These are crystallites enveloped by a membrane that forms
Anaerobic magnetite production by a marine, magnetotactic bacterium
Bacterial production of magnetite represents a significant contribution to the natural remanent magnetism of deep-sea and other sediments1–5. Because cells of the freshwater magnetotactic bacterium
Ultrastructure of a magnetotactic spirillum
TLDR
The ultrastructure of a magnetotactic bacterium (strain MS-1) was examined by transmission, scanning, and scanning-transmission electron microscopy, and the term "magnetosome" is proposed for the electron-dense particles with their enveloping layer(s) as found in this and other magnetosome bacteria.
Biomineralization of ferrimagnetic greigite (Fe3S4) and iron pyrite (FeS2) in a magnetotactic bacterium
THE ability of magnetotactic bacteria to orientate and navigate along geomagnetic field lines is due to the controlled intracellular deposition of the iron oxide mineral, magnetite (Fe3O4)1,2. The
Morphology and structure of biogenic magnetite particles
Blakemore1 found aquatic bacteria that swim along magnetic lines of force. Such bacteria have small particles of magnetite (magnetosomes) within them2,3 of various shapes3–5. We describe here the
Phylogenetic analysis of Aquaspirillum magnetotacticum using polymerase chain reaction-amplified 16S rRNA-specific DNA.
TLDR
Phylogenetic analysis revealed that A. magnetotacticum MS1 belongs to the alpha-group of proteobacteria, which offers perspective on the biochemical properties of A. magnetscriptum, since this organism is expected to have the general properties that are common to this phylogenetic group.
Ultrastructure and characterization of anisotropic magnetic inclusions in magnetotactic bacteria
Ovoid magnetotactic bacteria extracted from the Exeter River, New Hampshire, U. S. A., contain chains of 20–35 anisotropic magnetic inclusions running longitudinally in each of three lateral cell
Magnetite in Freshwater Magnetotactic Bacteria
TLDR
Results of Mossbauer spectroscopic analysis applied to whole cells identifies magnetite as a constituent of these magnetic bacteria in a previously undescribed magnetotactic spirillum isolated from a freshwater swamp.
Archaea in coastal marine environments.
  • E. Delong
  • Environmental Science, Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 1992
TLDR
Evidence for the widespread occurrence of unusual archaea in oxygenated coastal surface waters of North America is provided and it is suggested that these microorganisms represent undescribed physiological types of archaea, which reside and compete with aerobic, mesophilic eubacteria in marine coastal environments.
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