nieuwe zoekopdracht
[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina

Nitrification and Nitrifying Bacteria in a Coastal Microbial Mat
Fan, H.; Bolhuis, H.; Stal, L.J. (2015). Nitrification and Nitrifying Bacteria in a Coastal Microbial Mat. Front. Microbiol. 6: 1367. dx.doi.org/10.3389/fmicb.2015.01367
In: Frontiers in Microbiology. Frontiers Media: Lausanne. ISSN 1664-302X, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Author keywords
    ammonia-oxidation; amoA; microbialmat; nitrification; salinity

Auteurs  Top 

Abstract
    The first step of nitrification, the oxidation of ammonia to nitrite, can be performed by ammonia-oxidizing archaea (AOA) or ammonium-oxidizing bacteria (AOB). We investigated the presence of these two groups in three structurally different types of coastal microbial mats that develop along the tidal gradient on the North Sea beach of the Dutch barrier island Schiermonnikoog. The abundance and transcription of amoA, a gene encoding for the alpha subunit of ammonia monooxygenase that is present in both AOA and AOB, were assessed and the potential nitrification rates in these mats were measured. The potential nitrification rates in the three mat types were highest in autumn and lowest in summer. AOB and AOA arnoA genes were present in all three mat types. The composition of the AOA and AOB communities in the mats of the tidal and intertidal stations, based on the diversity of arnoA, were similar and clustered separately from the supratidal microbial mat. In all three mats AOB amoA genes were significantly more abundant than AOA amoA genes. The abundance of neither AOB nor AOA amoA genes correlated with the potential nitrification rates, but AOB amoA transcripts were positively correlated with the potential nitrification rate. The composition and abundance of amoA genes seemed to be partly driven by salinity, ammonium, temperature, and the nitrate/nitrite concentration. We conclude that AOB are responsible for the bulk of the ammonium oxidation in these coastal microbial mats

Alle informatie in IMIS valt onder het VLIZ Privacy beleid Top | Auteurs 
IMIS is ontwikkeld en wordt gehost door het VLIZ, voor meer informatie contacteer .