Electrobiocorrosion by microbes without outer‐surface cytochromes onlinelibrary.wiley.com/doi/full/10.10… No cytochromes? No problem. Direct electron uptake from Fe(0) without ‘traditional’ extracellular electrical contacts. Further elucidating these new mechanisms should be fun but challenging

Poor scholarship/rigor in authorship and peer review now quite prevalent in the field of extracellular electron transfer. Paper on Fe(III) reduction to Fe(0) that I posted about now retracted journals.asm.org/doi/full/10.11… Not making friends calling papers out, but somebody has to do it

When the fourth decimal point really is a significant digit!!!!

look who is microbe of the month #Geobacter the microbeelectric

Electrobiocorrosion by microbes without outer‐surface cytochromes - Holmes - mLife - Wiley Online Library onlinelibrary.wiley.com/doi/10.1002/ml…

Elucidating Microbial Iron Corrosion Mechanisms with a Hydrogenase-Deficient Strain of Desulfovibrio vulgaris biorxiv.org/content/10.110… Functional genetics and stoichiometric investigations refute 90-year concept that microbial H2 consumption accelerates corrosion. NEU team study

Expression of filaments of the Geobacter extracellular cytochrome OmcS in Shewanella oneidensis …iencejournals.onlinelibrary.wiley.com/doi/10.1002/bi… Expressing Geobacter OmcS in S. oneidensis enhances EET, but only when functional porin-cytochrome conduits are present to move electrons to the outer surface.

Lack of physiological evidence for cytochrome filaments functioning as conduits for extracellular electron transfer journals.asm.org/doi/10.1128/mb… Functional genetic studies demonstrate requirement for e-pili, but not cytochrome nanowires for #Geobacter long-range EET. Highlights: •

Wow! The author provides key insights into ignored, misinterpreted, and suppressed data in the publication of high impact papers interpreting cytochrome nanowire function. Read along with journals.asm.org/doi/10.1128/mb… clearly, much more to do to sort out cytochrome filament function

An Electromicrobiology Must Read "To be or Not to be a Cytochrome: Electrical Characterizations are Inconsistent with Geobacter Cytochrome 'Nanowires'" Matthew J. Guberman-Pfeffer frontiersin.org/journals/micro… Think you understand cytochrome nanowires? Some takeaways: “The structural

🦠🔋A new #mLife work by Derek Lovley et al. found that syntrophic methanogens and acetogens that perform electroactive corrosion lack important outer surface c-type cytochromes previously identified in other electroactive microbes. Wiley Microbiology doi.org/10.1002/mlf2.1…

Happy to see this commentary. Other issues: stoichiometry for methane consumption and Fe(III) reduction is not stoichiometric and there is orders of magnitude too little humic acid to account for methane consumed. For commentary on another EET paper by this same group see:

Taking Corrosion Mechanisms Claims with a Grain of Salt: “Chloride Enhances Corrosion Associated with Sulfate-Reducing Bacteria” sciencedirect.com/science/articl… For two decades rapid corrosion by some Desulfovibrio was attributed to a radically new mechanism of corrosion. Actually, the

Chloride Enhances Corrosion Associated with Sulfate-Reducing Bacteria authors.elsevier.com/c/1j303,Fwi-Rhq No genes, no gels, no high-end analytics, just basic culturing to provide the simple explanation for what was erroneously considered a paradigm shift in microbial corrosion mechanisms.

Incorporating Microbial Pilin-Based Nanowires into a Water-Stable Electronic Polymer Composite biorxiv.org/content/10.110… Precision genetic tailoring of microbial nanowires incorporated into polymer composite for multiple functions, including highly sensitive electronic sensing of

Iron Corrosion is a Gas! onlinelibrary.wiley.com/doi/full/10.10… • Desulfovibrio vulgaris is incapable of direct metal-to-microbe electron transfer even with supplementary energy & ferrous sulfide • H2 removal is not necessary for the enhanced corrosion observed in the presence of microbes

Microbial nanowires can be integrated in electronic devices for sensing, electricity generation and neuromorphic memory! In their Review, Derek Lovley et al discuss their functional re-engineering for sustainable electronics Derek Lovley go.nature.com/4eMv6pn

Microbial nanowires for sustainable electronics Open access: rdcu.be/dMOU1 Taking electromicrobiology ‘down to the wire’ •Types of microbial nanowires •The E. coli chassis for scale-up •Genetic tailoring for novel functions •Novel electronics-sensors, electricity

The worldwide economic cost of microbial corrosion is likely to exceed a trillion dollars a year. A new #mLife study by Derek Lovley et al. shows that Desulfovibrio vulgaris promotes corrosion by producing sulfide during sulfate reduction. doi.org/10.1002/mlf2.1…

Sensing devices fabricated with Escherichia coli expressing genetically tunable nanowires incorporated into a water-stable polymer authors.elsevier.com/a/1knpe3PVtq0O… Fabricating wearable sensors by mixing whole cells & their attached pilin-based nanowires into flexible polymer composite.