TY - JOUR
T1 - Hydrogen is a major lifeline for aerobic bacteria
AU - Greening, Chris
AU - Islam, Zahra F.
AU - Bay, Sean K.
N1 - Funding Information:
We thank our fellow laboratory members, collaborators, and mentors for their diverse contributions to the research and ideas discussed here. These include Gregory Cook, Pok Man Leung, Paul Cordero, Ya-Jou Chen, Eleonora Chiri, Philipp Nauer, Rhys Grinter, Rachael Lappan, Kiel Hards, Michael Berney, Sergio Morales, Steven Chown, Perran Cook, Robert Maier, Dagmar Woebken, Holger Daims, Philip Hugenholtz, Ralf Conrad, Gary King, and Philippe Constant. We acknowledge salary support from the National Health and Medical Research Council ( APP1178715 ; salary for C.G.) and ARC SRIEAS Grant ' Securing Antarctica’s Environmental Future ' ( SR200100005 ; salary for S.K.B.), as well as funding for the research described here from the Australian Research Council ( DE170100310 , DP180101762 , and DP200103074 ).
Publisher Copyright:
© 2021 Elsevier Ltd
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2022/4
Y1 - 2022/4
N2 - Molecular hydrogen (H2) is available in trace amounts in most ecosystems through atmospheric, biological, geochemical, and anthropogenic sources. Aerobic bacteria use this energy-dense gas, including at atmospheric concentrations, to support respiration and carbon fixation. While it was thought that aerobic H2 consumers are rare community members, here we summarize evidence suggesting that they are dominant throughout soils and other aerated ecosystems. Bacterial cultures from at least eight major phyla can consume atmospheric H2. At the ecosystem scale, H2 consumers are abundant, diverse, and active across diverse soils and are key primary producers in extreme environments such as hyper-arid deserts. On this basis, we propose that H2 is a universally available energy source for the survival of aerobic bacteria.
AB - Molecular hydrogen (H2) is available in trace amounts in most ecosystems through atmospheric, biological, geochemical, and anthropogenic sources. Aerobic bacteria use this energy-dense gas, including at atmospheric concentrations, to support respiration and carbon fixation. While it was thought that aerobic H2 consumers are rare community members, here we summarize evidence suggesting that they are dominant throughout soils and other aerated ecosystems. Bacterial cultures from at least eight major phyla can consume atmospheric H2. At the ecosystem scale, H2 consumers are abundant, diverse, and active across diverse soils and are key primary producers in extreme environments such as hyper-arid deserts. On this basis, we propose that H2 is a universally available energy source for the survival of aerobic bacteria.
KW - actinobacteria
KW - hydrogen
KW - hydrogenase
KW - survival
KW - trace gas
UR - http://www.scopus.com/inward/record.url?scp=85113861324&partnerID=8YFLogxK
U2 - 10.1016/j.tim.2021.08.004
DO - 10.1016/j.tim.2021.08.004
M3 - Review Article
AN - SCOPUS:85113861324
SN - 0966-842X
VL - 30
SP - 330
EP - 337
JO - Trends in Microbiology
JF - Trends in Microbiology
IS - 4
ER -
