Chemo‐ and Magnetotaxis of Self‐Propelled Light‐Emitting Chemo‐electronic Swimmers

Magnetite and magnetotaxis in algae.

Magnetotactic algae of the genus Anisonema (Euglenophyceae) have been isolated from a coastal mangrove swamp in northeastern Brazil. The magnetotactic response is based on a permanent magnetic dipole moment per cell approximately 7 10(-10) emu. Each cell contains many magnetite (Fe(3)O(4)) particles organized in chains.

Magnetite and magnetotaxis in microorganisms.

Magnetotactic bacteria from freshwater and marine sediments orient and navigate along geomagnetic field lines. Their magnetotactic response is based on intracellular, single magnetic domains of ferrimagnetic magnetite, which impart a permanent magnetic dipole moment to the cell.

Magnetite and Magnetotaxis in Bacteria and Algae

Magnetotactic bacteria navigate along geomagnetic field lines. By tt is means they find and stay in their preferred habitat and avoid the toxic effects of oxygen. Cells contain single-magnetic-domain Fe304 particles which are resporsible for their magnetotactic response. Numerous Fe 0 particle organized in (hains have recently been found in eukaryotic cells, edglenoid, motile, magnetot ctlc alg...

Magnetotaxis and magnetic particles in bacteria

Multiple evolutionary origins of magnetotaxis in bacteria.

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 al...