The swimming orientation of multicellular magnetotactic prokaryotes and uncultured magnetotactic cocci in magnetic fields similar to the geomagnetic field reveals differences in magnetotaxis between them

摘要: Magnetotactic bacteria have intracellular chains of magnetic nanoparticles, conferring to their cellular body a moment that permits the alignment swimming trajectories geomagnetic field lines. That property is known as magnetotaxis and makes them suitable for study bacterial motion. The present paper studies uncultured magnetotactic cocci multicellular prokaryote ‘Candidatus Magnetoglobus multicellularis’ exposed fields lower than 80 μT. It was assumed are cylindrical helixes axial velocity, helix radius, frequency orientation relative applied were determined from experimental trajectories. results show paramagnetic model applies well but not ‘Ca. M. in low regime analyzed. orient predicted by classical general does swim following direction, meaning it inversion direction represents stimulus selection depends on other cues or even mechanisms detection.