Toward a mechanistic understanding of anaerobic nitrate-dependent iron oxidation: balancing electron uptake and detoxification.

Frontiers in Microbiology
Hans K CarlsonJ D Coates

Abstract

The anaerobic oxidation of Fe(II) by subsurface microorganisms is an important part of biogeochemical cycling in the environment, but the biochemical mechanisms used to couple iron oxidation to nitrate respiration are not well understood. Based on our own work and the evidence available in the literature, we propose a mechanistic model for anaerobic nitrate-dependent iron oxidation. We suggest that anaerobic iron-oxidizing microorganisms likely exist along a continuum including: (1) bacteria that inadvertently oxidize Fe(II) by abiotic or biotic reactions with enzymes or chemical intermediates in their metabolic pathways (e.g., denitrification) and suffer from toxicity or energetic penalty, (2) Fe(II) tolerant bacteria that gain little or no growth benefit from iron oxidation but can manage the toxic reactions, and (3) bacteria that efficiently accept electrons from Fe(II) to gain a growth advantage while preventing or mitigating the toxic reactions. Predictions of the proposed model are highlighted and experimental approaches are discussed.

Citations

May 21, 2013·Astrobiology·J Ian Van TrumpJohn D Coates
Oct 21, 2014·Nature Reviews. Microbiology·Emily D MeltonAndreas Kappler
Mar 8, 2016·Environmental Science & Technology·Jacqueline MejiaMatthew Allen Ginder-Vogel
Oct 7, 2015·Frontiers in Microbiology·Jennyfer MiotMélanie Poinsot
Mar 11, 2015·Environmental Microbiology Reports·Patrick GregoireJohn D Coates
Feb 5, 2013·Biochimica Et Biophysica Acta·Stéphane GrimaldiAxel Magalon
Oct 10, 2012·Biochimica Et Biophysica Acta·Marianne Ilbert, Violaine Bonnefoy
Dec 25, 2015·Microbiology and Molecular Biology Reviews : MMBR·Hongyue Dang, Charles R Lovell
Nov 13, 2012·Applied and Environmental Microbiology·Anirban Chakraborty, Flynn Picardal
Feb 21, 2016·Applied and Environmental Microbiology·Shaomei HeEric E Roden
Apr 30, 2013·Applied and Environmental Microbiology·M OshikiS Okabe
Sep 6, 2015·Applied and Environmental Microbiology·Brittany D BennettJeffrey A Gralnick
Nov 28, 2012·Biochemical Society Transactions·David Emerson
Jul 20, 2016·Microbes and Environments·Satoshi IshiiSatoshi Okabe
Apr 5, 2018·Frontiers in Microbiology·Alex PriceKaren Olsson-Francis
Jun 17, 2020·The Science of the Total Environment·C B PandeyJ S Singh
Apr 21, 2018·Environmental Science & Technology·James JamiesonBenjamin Bostick
Feb 14, 2013·Environmental Science & Technology·Sebastian H KopfDianne K Newman
Oct 3, 2017·Environmental Science & Technology·Clare L ThorpeKatherine Morris
Mar 11, 2020·Ecotoxicology and Environmental Safety·Ru WangPing Zheng

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.