Ammonia Oxidation Potentials and Ammonia Oxidizers of Lichen–Moss Vegetated Soils at Two Ice-free Areas in East Antarctica

• Published in: Microbes and Environments
• Main Authors: Hayashi, Kentaro, Tanabe, Yukiko, Fujitake, Nobuhide, Kida, Morimaru, Wang, Yong, Hayatsu, Masahito, Kudoh, Sakae
• Format: Text
• Language: English
• Published: Japanese Society of Microbial Ecology / Japanese Society of Soil Microbiology / Taiwan Society of Microbial Ecology / Japanese Society of Plant Microbe Interactions / Japanese Society for Extremophiles 2020
• Subjects: Short Communication; East Antarctica; Langhovde; Antarc*; Antarctica
• Online Access: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7104286/; http://www.ncbi.nlm.nih.gov/pubmed/32009017; https://doi.org/10.1264/jsme2.ME19126

The maximum ammonia oxidation potential (AOP) of a topsoil in Langhovde, East Antarctica was 22.1±2.4‍ ‍ng N g(–1) dry soil h(–1) (2‍ ‍mM ammonium, 10°C, n=3). This topsoil exhibited twin AOP peaks (1 and 2‍ ‍mM ammonium) at 10°C, but not at 20°C. Six and ten operational taxonomic units (OTUs) were identified for ammonia-oxidizing bacteria (AOB) and archaea (AOA) amoA, respectively. AOB were classified into Nitrosospira; the two dominant OTUs corresponded to the Mount Everest cluster. AOA were classified into three clusters; Nitrososphaera and Nitrosocosmicus were the two dominant clusters.