Oxidation of sulfur, hydrogen, and iron by metabolically versatile Hydrogenovibrio from deep sea hydrothermal vents

authored by: Katja Laufer-Meiser, Malik Alawi, Stefanie Böhnke, Claus Henning Solterbeck, Jana Schloesser, Axel Schippers, Philipp Dirksen, Thomas Brüser, Susann Henkel, Janina Fuss, Mirjam Perner
Abstract: Chemolithoautotrophic Hydrogenovibrio are ubiquitous and abundant at hydrothermal vents. They can oxidize sulfur, hydrogen, or iron, but none are known to use all three energy sources. This ability though would be advantageous in vents hallmarked by highly dynamic environmental conditions. We isolated three Hydrogenovibrio strains from vents along the Indian Ridge, which grow on all three electron donors. We present transcriptomic data from strains grown on iron, hydrogen, or thiosulfate with respective oxidation and autotrophic carbon dioxide (CO₂) fixation rates, RubisCO activity, SEM, and EDX. Maximum estimates of one strain’s oxidation potential were 10, 24, and 952 mmol for iron, hydrogen, and thiosulfate oxidation and 0.3, 1, and 84 mmol CO₂ fixation, respectively, per vent per hour indicating their relevance for element cycling in-situ. Several genes were up- or downregulated depending on the inorganic electron donor provided. Although no known genes of iron-oxidation were detected, upregulated transcripts suggested iron-acquisition and so far unknown iron-oxidation-pathways.
Organisation(s): Institute of Microbiology
External Organisation(s): GEOMAR Helmholtz Centre for Ocean Research Kiel
University Medical Center Hamburg-Eppendorf
Kiel University of Applied Sciences
Federal Institute for Geosciences and Natural Resources (BGR)
Alfred Wegener Institute (AWI) Helmholtz Centre for Polar and Marine Research
Kiel University
Type: Article
Journal: ISME Journal
Volume: 18
ISSN: 1751-7362
Publication date: 2024
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Microbiology, Ecology, Evolution, Behavior and Systematics
Electronic version(s): https://doi.org/10.1093/ismejo/wrae173 (Access: Open)

BibTeX

@article{0901056fdfa942f18b6baf9c4c3559c1,
title = "Oxidation of sulfur, hydrogen, and iron by metabolically versatile Hydrogenovibrio from deep sea hydrothermal vents",
abstract = "Chemolithoautotrophic Hydrogenovibrio are ubiquitous and abundant at hydrothermal vents. They can oxidize sulfur, hydrogen, or iron, but none are known to use all three energy sources. This ability though would be advantageous in vents hallmarked by highly dynamic environmental conditions. We isolated three Hydrogenovibrio strains from vents along the Indian Ridge, which grow on all three electron donors. We present transcriptomic data from strains grown on iron, hydrogen, or thiosulfate with respective oxidation and autotrophic carbon dioxide (CO2) fixation rates, RubisCO activity, SEM, and EDX. Maximum estimates of one strain{\textquoteright}s oxidation potential were 10, 24, and 952 mmol for iron, hydrogen, and thiosulfate oxidation and 0.3, 1, and 84 mmol CO2 fixation, respectively, per vent per hour indicating their relevance for element cycling in-situ. Several genes were up- or downregulated depending on the inorganic electron donor provided. Although no known genes of iron-oxidation were detected, upregulated transcripts suggested iron-acquisition and so far unknown iron-oxidation-pathways.",
keywords = "autotrophic CO fixation: Indian ridge, chemolithoautotrophy, hydrogen oxidizer, Hydrogenovibrio, hydrothermal vent environment bacteria, iron oxidizer, sulfur oxidizer",
author = "Katja Laufer-Meiser and Malik Alawi and Stefanie B{\"o}hnke and Solterbeck, {Claus Henning} and Jana Schloesser and Axel Schippers and Philipp Dirksen and Thomas Br{\"u}ser and Susann Henkel and Janina Fuss and Mirjam Perner",
note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",
year = "2024",
doi = "10.1093/ismejo/wrae173",
language = "English",
volume = "18",
journal = "ISME Journal",
issn = "1751-7362",
publisher = "Nature Publishing Group",
number = "1",
}