Magnetotactic bacteria are a diverse group of microorganisms with the ability to use geomagnetic fields for direction sensing. This unique feat is accomplished with the help of magnetosomes, nanometer-sized magnetic crystals surrounded by a lipid bilayer membrane and organized into chains via a dedicated cytoskeleton within the cell. Because of the special properties of these magnetic crystals,...

Magnetotatic bacteria have been isolated from iron cap belt of Cuddegali Voril Soddo iron ore mine. Here magnetic measurement and non magnetic analysis helps to detect biogenic magnetite in soil sample. The cultivation of magnetotactic bacteria was done in modified enrichment medium and incubated at room temperature (25–30 C). A short rod of magnetotactic bacteria contained two or more magnetos...

Magnetotactic bacteria optimization algorithm (MBOA) is an optimization algorithm based on the characteristics of magnetotactic bacteria, which is a kind of polyphyletic group of prokaryotes with the characteristics of magnetotaxis that make them orient and swim along geomagnetic field lines. MBOA mimics the development process of magnetosomes (MTSs) in magnetotactic bacteria to solve problems....

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...

A birefringence technique is used to determine the average magnetic moments of magnetotactic bacteria in culture. Differences in are noted between live and dead bacteria, as well as between normal density and high density samples of live bacteria.

The ultrastructure of a magnetotactic bacterium (strain MS-1) was examined by transmission, scanning, and scanning-transmission electron microscopy. The organism resembled other spirilla in general cell morphology, although some differences were detected at the ultrastructural level. Electron-dense particles within magnetotactic cells were shown by energy-dispersive X-ray analysis to be localiz...

UNLABELLED Faithful replication of all structural features is a sine qua non condition for the success of bacterial reproduction by binary fission. For some species, a key challenge is to replicate and organize structures with multiple polarities. Polarly flagellated magnetotactic bacteria are the prime example of organisms dealing with such a dichotomy; they have the challenge of bequeathing t...

PURPOSE To determine if magnetotactic bacteria can target tumors in mice and provide positive contrast for visualization using magnetic resonance imaging. EXPERIMENTAL DESIGN The ability of the magnetotactic bacterium, Magnetospirillum magneticum AMB-1 (referred to from here as AMB-1), to confer positive magnetic resonance imaging contrast was determined in vitro and in vivo. For the latter s...