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A novel Methylomirabilota methanotroph potentially couples methane oxidation to iodate reduction

Title data

Zhu, Baoli ; Karwautz, Clemens ; Andrei, Stefan ; Klingl, Andreas ; Pernthaler, Jakob ; Lüders, Tillmann:
A novel Methylomirabilota methanotroph potentially couples methane oxidation to iodate reduction.
In: mLife. Vol. 1 (2022) Issue 3 . - pp. 323-328.
ISSN 2770-100X
DOI: https://doi.org/10.1002/mlf2.12033

Abstract in another language

Methane oxidizing microbes play a key role in reducing the emission of this potent greenhouse gas to the atmosphere. The known versatility of the recently discovered anaerobic Methylomirabilota methanotrophs is limited. Here, we report a novel uncultured Methylomirabilis species, Candidatus Methylomirabilis iodofontis, with the genetic potential of iodate respiration from biofilm in iodine-rich cavern spring water. Star-like cells resembling Methylomirabilis oxyfera were directly observed from the biofilm and a high-quality metagenome-assembled genome (MAG) of Ca. M. iodofontis was assembled. In addition to oxygenic denitrification and aerobic methane oxidation pathways, the M. iodofontis MAG also indicated its iodate-reducing potential, a capability that would enable the bacterium to use iodate other than nitrite as an electron acceptor, a hitherto unrecognized metabolic potential of Methylomirabilota methanotrophs. The results advance the current understanding of the ecophysiology of anaerobic Methylomirabilota methanotrophs and may suggest an additional methane sink, especially in iodate-rich ecosystems.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Ecological Microbiology > Chair Ecological Microbiology - Univ.-Prof. Dr. Tillmann Lüders
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 570 Life sciences, biology
Date Deposited: 05 Oct 2022 09:11
Last Modified: 05 Oct 2022 09:11
URI: https://eref.uni-bayreuth.de/id/eprint/72278