Microbial Fuel Cells and Bioremediation

Biofilm Patterning Reveals the Functional Contributions of Periplasmic Cytochromes to the Electrochemical Activity of Shewanella oneidensis

This study uses synthetic biology and light-induced biofilm patterning to show that periplasmic cytochromes in Shewanella oneidensis are essential for outward electron transfer but not for lateral biofilm conductivity.

Deep sea anaerobic microbial community couples the degradation of insoluble chitin to extracellular electron transfer

This study shows deep-sea microbes degrade chitin and couple it to extracellular electron transfer using syntrophic interactions in anoxic sediments.

Artificial sediments enable reproducible cultivation and recapitulate ecological interactions of cable bacteria

This study develops an artificial sediment matrix to cultivate cable bacteria, enabling reproducible growth and ecological interaction studies.

Linking structure to function in high performing electrosynthetic biofilm communities

This study identifies key microbial species and metabolic pathways in high-performing biofilm-based microbial electrosynthesis systems and provides insights into their community dynamics and product formation.

Transforming dairy waste into hydrogen fuel using alginate-encapsulated bacterial co-cultures

This paper demonstrates using alginate-encapsulated bacterial co-cultures to convert dairy waste into hydrogen fuel and graphene oxide, showing higher efficiency and recyclability compared to monocultures.

Challenging the Diffusion Barrier Paradigm: Biofilms Promote Flavin-mediated Electron Shuttling in Shewanella oneidensis

This study shows biofilms enhance flavin diffusion in Shewanella oneidensis, challenging the idea that diffusion limits electron transfer in biofilms.

Abundant and active acetogens enhance the carbon dioxide sink of Blue Carbon ecosystems

This study identifies acetogens as active carbon fixers in Blue Carbon ecosystems, revealing a novel CO2 sink pathway beyond photosynthesis.

Fe3O4 nanoparticles shell amplify charge-extraction efficiency in Dunaliella photovoltaics

This study enhances Dunaliella-based microbial biophotovoltaics by coating them with Fe3O4 nanoparticles, improving electron transfer efficiency and power output.

Preliminary characterization of CbcS from Geobacter sulfurreducens ' Cbc4 complex: a putative novel respiratory pathway

This study characterizes CbcS, a component of the Cbc4 complex in Geobacter sulfurreducens, showing its structural similarity to known cytochromes and its ability to transfer electrons to periplasmic partners.

Different growth pattern during microbial electrosynthesis using C. ljungdahlii evolutionary adapted on iron

This study evolved Clostridium ljungdahlii on iron to improve extracellular electron uptake, finding reduced growth on H2 and CO2 but increased acetate production on iron compared to wild-type.

Heterologous expression of pyruvate formate lyase enhances cell growth of Clostridium ljungdahlii during microbial electrosynthesis

This study enhances cell growth of Clostridium ljungdahlii during microbial electrosynthesis by heterologously expressing pyruvate formate lyase genes from Acetobacterium woodii.

Genome-centric metagenomics reveals novel electroactive syntrophs in a conductive particle-dependent consortium from coastal sediments

The paper uses genome-resolved metagenomics to identify novel electroactive syntrophs in a conductive particle-dependent consortium from coastal sediments, revealing genomic markers and electron-transfer pathways.

Hemin-binding DNA structures on the surface of bacteria promote extracellular electron transfer

This study shows that hemin-binding G-quadruplex DNA structures in bacterial biofilms facilitate extracellular electron transfer and peroxidase-like activity.

MFC-MEC Coupled System for Biohydrogen Production

This study couples microbial electrolysis cells with microbial fuel cells to produce green hydrogen using farm soil, wastewater, anaerobic sludge, and cow dung, achieving an average hydrogen production rate of 6.9 mL/day.

Cell Surface Differences within the Genus Methanosarcina Shape Interactions with the Extracellular Environment

This paper reviews the differences in cell surface properties and extracellular electron transfer strategies between Type I and Type II Methanosarcina, highlighting gaps in understanding their molecular mechanisms.

A Bioelectrochemical Crossbar Architecture Screening Platform (BiCASP) for Extracellular Electron Transfer

The paper introduces BiCASP, a high-throughput platform for screening electroactive microbes, enabling rapid and reproducible analysis of extracellular electron transfer.

Impact of the rotational speed and counter electrode configuration on the performance of a rotating disc bioelectrochemical reactor (RDBER) operated as microbial electrolysis cell

The paper evaluates how rotational speed and counter electrode placement affect a microbial electrolysis cell's performance, finding increased current density and hydrogen production with moderate speeds and reduced hydrogen shuttling with upper cathode placement.

Extracellular RNA drives Electromethanogenesis in a Methanogenic Archaeon

The paper shows extracellular RNA facilitates electron transfer in Methanosarcina barkeri, enabling electromethanogenesis, and suggests RNA-based electron transfer may be ancestral.

Cryptic cycling by electroactive bacterioplankton in Trout Bog Lake

The paper investigates diel and seasonal electron cycling in Trout Bog Lake by electroactive bacterioplankton, finding evidence of DOM cycling between oxidized and reduced states through EET-based metabolism.

A comparison study between liquid- and vapor-fed anode zero-gap bioelectrolysis cells

This study compares liquid- and vapor-fed anode zero-gap bioelectrolysis cells for electromethanogenesis, finding similar CH4 production rates but advantages of vapor-fed systems in reducing catalyst degradation.

Bioelectricity generation by Symbiodinium microadriaticum: a symbiont-forming photosynthetic dinoflagellate alga from coral reefs

This study measures extracellular electron transfer in Symbiodinium microadriaticum to assess bioenergetic fluctuations and environmental stress impacts on coral-dinoflagellate symbiosis.

Effects of Soluble Electron Shuttles on Microbial Iron Reduction and Methanogenesis

This study examines how different soluble electron shuttles affect microbial iron reduction and methanogenesis in enrichments, showing varied impacts on microbial communities and carbon flux.

Isolation and characterization of Sporomusa carbonis sp. nov., a carboxydotrophic hydrogenogen in the genus of Sporomusa isolated from a charcoal burning pile

This study isolates and characterizes a new bacterial species, Sporomusa carbonis, from a charcoal burning pile, describing its genomic and metabolic features.

Heterologous Expression of the carbon monoxide dehydrogenase Gene from Clostridium sp. to Enhance Acetic Acid and Alcohol Production from CO2

This study evaluates engineered E. coli strains expressing carbon monoxide dehydrogenase (codh) for enhanced CO2 conversion to acetic acid, formic acid, and ethanol in microbial electrochemical systems.

A small number of point mutations confer formate tolerance in Shewanella oneidensis

This paper identifies two point mutations that confer formate tolerance in Shewanella oneidensis, enabling its use in microbial electrosynthesis systems.

Unprecedented exoelectrogenic activity in Parachlorella kessleri MACC-38: The interplay of photosynthetic electron transport and the oxidative pentose phosphate pathway

This study identifies chlororespiration as critical for maintaining redox balance in Parachlorella kessleri MACC-38 during exoelectrogenesis, with the oxidative pentose phosphate pathway activated to meet increased reducing power demands.

Robust measurement of microbial reduction of graphene oxide nanoparticles using image analysis

This study introduces an image analysis method to quantify graphene oxide reduction by Shewanella oneidensis, showing improved accuracy over traditional absorbance-based techniques.

Cytochrome 'Nanowires' are Physically Limited to Sub-Picoamp Currents that Suffice for Cellular Respiration

The paper demonstrates that cytochrome nanowires have sub-picoamp currents sufficient for cellular respiration, constrained by physical and electrochemical factors.

Single-Cell Phenotyping of Extracellular Electron Transfer via Microdroplet Encapsulation

The paper develops a microdroplet emulsion system to enrich electroactive bacteria and identifies new electrogenic species from environmental samples.

Electrochemical cofactor recycling of bacterial microcompartments

The paper identifies a new function of an enzyme in bacterial microcompartments, proposing NAD+ regeneration and a role for the shell in redox separation.