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International MES research in marine-systems with focus on marine-underwater, extreme-environments. Abstract Aerobic ammonia oxidation is crucial to the nitrogen cycle, and is onl...

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Abstract

Abstract Aerobic ammonia oxidation is crucial to the nitrogen cycle, and is only known to be performed by a small number of bacterial lineages (Ammonia Oxidizing Bacteria, or AOBs) and a single clade of archaea (Ammonia Oxidizing Archaea, or AOAs) belonging to the Nitrososphaera class of Thaumarchaeota. Most characterized AOA originate from marine or wastewater environments, but this may represent only a limited subset of the full diversity of this clade. Here, we describe several genomes of AOA from metagenomic sequencing of a hot spring microbial mat, representing several poorly characterized basal lineages that may be important for understanding the early evolution of archaeal ammonia oxidation.

Keywords

ArchaeaThaumarchaeotaMetagenomicsHot springCladePyrosequencing

Identifiers

DOI
10.21203/rs.3.rs-3307453/v1
Journal
Research Square
Year
2023