Manganese reduction and associated microbial communities in Antarctic surface sediments

The polar regions are the fastest warming places on earth. Accelerated glacial melting causes increased supply of nutrients such as metal oxides (i.e., iron and manganese oxides) into the surrounding environment, such as the marine sediments of Potter Cove, King George Island/Isla 25 de Mayo (West A...

Full description

Saved in:
Bibliographic Details
Published in:Frontiers in microbiology 2024-07, Vol.15, p.1398021
Main Authors: Wunder, Lea C, Breuer, Inga, Willis-Poratti, Graciana, Aromokeye, David A, Henkel, Susann, Richter-Heitmann, Tim, Yin, Xiuran, Friedrich, Michael W
Format: Article
Language:English
Subjects:
Arcobacteraceae
Desulfuromusa
manganese reduction
marine surface sediment
Microbiology
Potter Cove
Sva1033
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The polar regions are the fastest warming places on earth. Accelerated glacial melting causes increased supply of nutrients such as metal oxides (i.e., iron and manganese oxides) into the surrounding environment, such as the marine sediments of Potter Cove, King George Island/Isla 25 de Mayo (West Antarctic Peninsula). Microbial manganese oxide reduction and the associated microbial communities are poorly understood in Antarctic sediments. Here, we investigated this process by geochemical measurements of sediment pore water and by slurry incubation experiments which were accompanied by 16S rRNA sequencing. Members of the genus were the main responder to manganese oxide and acetate amendment in the incubations. Other organisms identified in relation to manganese and/or acetate utilization included , Sva1033 (family of ) and unclassified . Our data show that distinct members of are most active in organotrophic manganese reduction, thus providing strong evidence of their relevance in manganese reduction in permanently cold Antarctic sediments.
ISSN:1664-302X
1664-302X
DOI:10.3389/fmicb.2024.1398021