Intracellular manganese granules formed by a subsurface bacterium

Environmental Microbiology
Susan GlasauerTerry J Beveridge

Abstract

The demonstrated ability of prokaryotes to form internal metal oxide particles during active metabolism has been restricted to Fe. Mineral-bound Mn(IV) is a known electron acceptor during dissimilatory metal reduction by Shewanella putrefaciens, yet no internal deposits of Mn have been reported to form during anaerobic respiration. We observed distinct nanometre-sized Mn-rich granules in the cytoplasm when either birnessite or pyrolusite (beta-MnO(2)) served as the electron acceptor during growth. During rapid Mn reduction, additional precipitates of Mn were also observed in the periplasm together with the cytoplasmic granules. The bacteria did not accumulate detectable Mn in the outer membrane during formation of the internal precipitates. This is the first report of an intracellular Mn solid produced by bacteria and coupled anaerobically to DR.

References

Dec 1, 1992·Applied and Environmental Microbiology·M Urrutia MeraT J Beveridge
Jan 30, 1999·Applied and Environmental Microbiology·S Langley, T J Beveridge
Jan 4, 2001·FEMS Microbiology Ecology·K L StraubB Schink
Jan 5, 2002·Science·Susan GlasauerTerry J Beveridge
Sep 7, 2002·Environmental Science & Technology·Michael J DybasCraig S Criddle
Oct 20, 1988·Biotechnology and Bioengineering·R G ArnoldM R Hoffmann

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Citations

Feb 15, 2016·Current Opinion in Biotechnology·David C Gillan
May 3, 2008·Geobiology·K J Edwards, D A Bazylinski
Jun 28, 2016·Applied and Environmental Microbiology·Mitchell H WrightAnthony C Greene
Dec 15, 2017·Environmental Science and Pollution Research International·Preeti Ranawat, Seema Rawat
Nov 21, 2009·Environmental Science & Technology·Christina M SmeatonChristopher G Weisener

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