Journal Article
Metabolic potential and in situ activity of marine Marinimicrobia bacteria in an anoxic water column
Anthony D. Bertagnolli; Cory C. Padilla; Jennifer B. Glass; Bo Thamdrup; Frank J. Stewart
Environmental Microbiology · Vol. 19, Issue 11 · pp. 4392-4416 · 2017
Abstract
Summary Marinimicrobia bacteria are widespread in subeuphotic areas of the oceans and particularly abundant in oxygen minimum zones (OMZs). Information on Marinimicrobia metabolism is sparse, making the biogeochemical influence of this group challenging to predict. Here, metagenome‐assembled genomes representing Marinimicrobia subgroups PN262000N21 and ARCTIC96B‐7 were retrieved to near completion (97% and 94%) from OMZ metagenomes, with contamination (14.1%) observed only in ARCTIC96B‐7. Genes for aerobic carbon monoxide (CO) oxidation, polysulfide metabolism and hydrogen utilization were identified only in PN262000N21, while genes for partial denitrification occurred in both genomes. Transcripts mapping to these genomes increased from