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Claire Baranger

Claire Baranger

Université de Technologie de Compiègne, France

Title: “Myco-fluidics” for soil remediation: developing a microfluidic tool to monitor the solubilization and uptake of a persistant soil pollutant in filamentous fungi

Biography

Biography: Claire Baranger

Abstract

Bioremediation appears as a relatively low-cost solution for the restoration of soils contaminated with persistent organic pollutants. Among these pollutants, high molecular weight polycyclic aromatic hydrocarbons (PAHs) display a high resistance to degradation and low bioavailability.

Filamentous fungi are known for their ability to degrade complex substrates, and some soil fungi, such as Talaromyces helicus, showed promising results regarding the biodegradation of PAHs. However, the mechanisms involved in the incorporation and biodisponibility modifications of these pollutants remain poorly understood.

In this context, the Myco-fluidics project aims at using microfluidics to mimic the soil microenvironment and monitor the solubilization and uptake of pollutants in filamentous fungi in vivo. This approach allows direct microscopic observations at a cellular scale, in complement with a characterization of the degradation in macroscopic cultures.

Preliminary results show the intracellular storage of benzo[a]pyrene in T. helicus hyphae, and suggest the release of tensio-active compounds likely to promote the desorption and stabilization of HAPs in the aqueous phase. In a broader perspective, this soil-on-a-chip model could be used as a new tool to investigate parameters affecting the biodegradation of pollutants, in order to develop more efficient fungus-mediated soil cleanup strategies.

Recent Publications

  1. Bhardwaj, G. (2013). Biosurfactants from Fungi: A Review. J. Pet. Environ. Biotechnol. 4
  2. Fayeulle, A., Veignie, E., Slomianny, C., Dewailly, E., Munch, J.-C., and Rafin, C. (2014). Energy-dependent uptake of benzo[a]pyrene and its cytoskeleton-dependent intracellular transport by the telluric fungus Fusarium solani. Environ. Sci. Pollut. Res. 21, 3515–3523.
  3. Held, M., Edwards, C., and Nicolau, D.V. (2011). Probing the growth dynamics of Neurospora crassa with microfluidic structures. Fungal Biol. 115, 493–505.
  4. Marco-Urrea, E., García-Romera, I., and Aranda, E. (2015). Potential of non-ligninolytic fungi in bioremediation of chlorinated and polycyclic aromatic hydrocarbons. New Biotechnol. 32, 620–628.
  5. Stanley, C.E., Grossmann, G., Casadevall i Solvas, X., and deMello, A.J. (2016). Soil-on-a-Chip: microfluidic platforms for environmental organismal studies. Lab Chip 16, 228–241.