Novel uncultured Deltaproteobacteria populations (MSME Cluster) are dominant under chemolithotrophic manganese(IV)-reducing conditions in marine sediment slurry incubations


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Susann.Henkel [ at ] awi.de

Abstract

It is a three decade-old observation that when poorly-crystalline Mn(IV) is added to marine sediments, there is a rapid formation of sulfate which is linked to biological activity. However, knowledge of the diversity of microorganisms involved in this reaction is limited. 454-pyrosequencing analysis of bacterial 16S rRNA genes revealed a rapid enrichment (55-60% of total bacteria in 4 days from less than 1% on day 0) of novel uncultured Deltaproteobacteria (tentatively named Marine Sediment Manganese-reducing Enrichment, MSME Cluster) in MnO2 (Birnessite)-treated slurry incubations with sediment from the Helgoland mud area, North Sea. This finding further expands the diversity of microbes involved in Mn(IV)-dependent sulfate formation in marine sediments. Efforts are underway to further unravel the distribution and roles of MSME bacterial groups in S-Mn cycling in marine sediments.



Item Type
Conference (Poster)
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Primary Division
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Peer revision
Not peer-reviewed
Publication Status
Published
Event Details
ISME 16th International Symposium on Microbial Ecology, 21 Aug 2016 - 26 Aug 2016, Montreal, Canada.
Eprint ID
41555
Cite as
Oni, O. , Hanh, C. , Kulkarni, A. , Henkel, S. , Kasten, S. and Friedrich, M. W. (2016): Novel uncultured Deltaproteobacteria populations (MSME Cluster) are dominant under chemolithotrophic manganese(IV)-reducing conditions in marine sediment slurry incubations , ISME 16th International Symposium on Microbial Ecology, Montreal, Canada, 21 August 2016 - 26 August 2016 .


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