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Spectroscopic Slicing to Reveal Internal Redox Gradients in Electricity-Producing Biofilms

Authors

  • Luciana Robuschi,

    1. Laboratorio de Bioelectroquímica, División Corrosión, INTEMA-CONICET, Juan B. Justo 4302, B7608FDQ, Mar del Plata (Argentina)
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  • Dr. J. Pablo Tomba,

    1. Laboratorio de Microespectroscopía, División Polímeros, INTEMA-CONICET, Juan B. Justo 4302, B7608FDQ, Mar del Plata (Argentina)
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  • Germán D. Schrott,

    1. Laboratorio de Bioelectroquímica, División Corrosión, INTEMA-CONICET, Juan B. Justo 4302, B7608FDQ, Mar del Plata (Argentina)
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  • P. Sebastián Bonanni,

    1. Laboratorio de Bioelectroquímica, División Corrosión, INTEMA-CONICET, Juan B. Justo 4302, B7608FDQ, Mar del Plata (Argentina)
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  • P. Mariela Desimone,

    1. Laboratorio de Microespectroscopía, División Polímeros, INTEMA-CONICET, Juan B. Justo 4302, B7608FDQ, Mar del Plata (Argentina)
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  • Dr. Juan Pablo Busalmen

    Corresponding author
    1. Laboratorio de Bioelectroquímica, División Corrosión, INTEMA-CONICET, Juan B. Justo 4302, B7608FDQ, Mar del Plata (Argentina)
    • Laboratorio de Bioelectroquímica, División Corrosión, INTEMA-CONICET, Juan B. Justo 4302, B7608FDQ, Mar del Plata (Argentina)
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  • This work was financially supported by the European Union through the Bacwire FP7 Collaboration project (contract no: NMP4-SL-2009-229337). L.R., G.D.S., and P.S.B. are doctoral fellows from CONICET, Argentina. The technical assistance of Juan Asarou and Jose Kochur is greatly acknowledged.

Abstract

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Wired-up bacteria: Confocal Raman microscopy in combination with 3D structural analysis is used in the measurement of redox gradients in electricity-producing biofilms in vivo. The approach provides new relevant information for the understanding of electron conduction mechanisms in these systems.

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