Arcobacter peruensis sp. nov., a Chemolithoheterotroph Isolated from Sulfide- and Organic-Rich Coastal Waters off Peru

• DOI: 10.1128/aem.01344-19
• Publication Date: 2019-10-04T08:45:46Z
• Authors: Cameron M. Callbeck; Chris Pelzer; Gaute Lavik; Timothy G. Ferdelman; Jon S. Graf; Bram Vekeman; Harald Schunck; Sten Littmann; Bernhard M. Fuchs; Philipp F. Hach; Tim Kalvelage; Ruth A. Schmitz; Marcel M. M. Kuypers
• Keywords: Chemocline; Arcobacter; Carbon fixation; Autotroph

Our multidisciplinary approach provides new insights into the ecophysiology of a newly isolated environmental Arcobacter species, as well physiological flexibility within genus and sulfide-oxidizing, denitrifying microbial communities oceanic oxygen minimum zones (OMZs). The chemolithoheterotrophic species peruensis may play substantial role in diverse consortium bacteria that is capable coupling denitrification fixed nitrogen loss to sulfide oxidation eutrophic, sulfidic coastal waters. With increasing anthropogenic pressures on regions, e.g., eutrophication deoxygenation (D. Breitburg, L. A. Levin, Oschlies, M. Grégoire, et al., Science 359:eaam7240, 2018, https://doi.org/10.1126/science.aam7240 ), niches where heterotrophs such thrive are likely expand.