NDLI: Multicellular photo-magnetotactic bacteria

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Multicellular photo-magnetotactic bacteria

Content Provider	Scilit
Author	Shapiro, Orr H. Hatzenpichler, Roland Buckley, Daniel H. Zinder, Stephen H. Orphan, Victoria J.
Copyright Year	2010
Description	Journal: Environmental Microbiology Reports Multicellular magnetotactic bacteria (MMB) are unique microorganisms typically comprised of 10-40 bacterial cells arranged around a central acellular compartment. Their life cycle has no known unicellular stage and division occurs by separation of a single MMB aggregate into two identical offspring. In this study, South-seeking multicellular magnetotactic bacteria (ssMMB) were enriched from a New England salt marsh. When exposed to light, ssMMB reversed their magnetotactic behaviour to become North-seeking. The exposure time needed to generate the reversal response varied with light wavelength and intensity. Extensive exposure to light appeared to be lethal. This is the first report of a Northern hemisphere MMB displaying South-seeking behaviour and the first time a MMB is found to exhibit photo-magnetotaxis. We suggest that this mechanism enables ssMMB to optimize their location with regard to chemical gradients and light intensities, and propose a model to explain the peculiar balance between photo- and magnetotaxis.
Ending Page	238
Page Count	6
Starting Page	233
e-ISSN	17582229
DOI	10.1111/j.1758-2229.2010.00215.x
Journal	Environmental Microbiology Reports
Issue Number	2
Volume Number	3
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2010-09-30
Access Restriction	Open
Subject Keyword	Journal: Environmental Microbiology Reports Life Cycle Magnetotactic Bacteria Multicellular Multicellular Magnetotactic Exposure Time
Content Type	Text
Resource Type	Article

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