Bioavailability

Value Statement

We provide mechanistic description of the ecology and chemodynamics of contaminant biotransformation for improved environmental (bio)-technology.


Research Topics

Our research interest is related to a process-based description of the microbial chemodynamics of biotransformation of organic contaminants for improved environmental (bio-)technology.

The key research topics of the Bioavailability Group currently cover the

  1. Microbial chemodynamics and ecology of contaminant bioavailability at biogeochemical interfaces: (i) Elucidation of tactic responses of microorganisms towards contaminants and nanoparticles, (ii) Assessment of the biio-physical factors driving the deposition and dispersal of bacteria in the critical zone and prediction of its impact on the ecology of contaminant biodegradation, (iii) Quantification and modelling the biodegradation and toxicity of vapour phase mineral oil contaminants and its impact on stable isotope fractionation analysis.
  2. Mycoremediation and ecology of 'Bacteria Fungus Interactions': Ecology-based remediation approaches of contaminated environments (soil) based on the catabolic activation and dispersal of bacteria by fungi (‘fungal highways’).
  3. Electrokinetics and electro-bioremediation: Effects of weak electric fields and electrokinetic approaches on the clean-up of contaminated matrices and water.


Key words: Ecology of contaminant biodegradation, Dispersal ecology, Mycophere ecology, Contaminant bioavailability, Fungus Bacteria Interactions, Electrokinetics.


The many faces of the Bioavailability Group
The many faces of the Bioavailability Group on a sunny day in May 2018

Technicians

Jana Reichenbach
Rita Remer
Birgit Würz

Undergraduates

Charlotte Papendorf \ Technische Universität Berlin
Denise Kummer \ Universität Leipzig
Konstanze Hild \ Universität Leipzig
Johanna Rasch \ BeLL Studentin


Guest Scientists

Joyce Alvàrez Barragan \ Université de Pau et des Pays de l’Adour
Nelson Khan \ University of Nairobi

Apprentice

Franziska Beier


  • Characterization of physico-chemical surfaces properties of bacteria and fungal mycelia (contact angle, surface charge, biosurfactant production)
  • GC-based stable isotope approaches for the assessment of substrate bioavailability to single cells and microbial communities
  • Quantification of bacterial chemotaxis, degradation kinetics and deposition rates to surfaces
  • Computer-based visualisation and quantification of bacterial motility and dispersal
  • Chemical analytical techniques and laboratory model-systems permitting for full control of experimental variables and bioavailable substrate fluxes
  • Electrokinetic and fungus-based dispersal of bacteria and chemicals in porous media

  • 2014-2020: Controlling Chemicals's Fate (POFIII Project of the Helmholtz Association: CCF
  • 2017-2020: The Helmholtz Alberta Initiative (HAI): Predicting and managing the synergy of multiple stress - Chemicals and environmental stressors (BMBF-Project): HAI
  • 2017-2021: Phages as vectors and indicators of biological information in the Earth‘s Critical Zone: Deutsche Forschungs Gemeinschaft - Collaborative Research Centre AquaDiva (CRC AquaDiva (AquaDiva): AquaDiva
  • 2018-2021: Sustainable Transformation by Electrochemical Reactions, STROMER (PhD-college): STROMER
  • 2015-2018: Elucidation of Extremophilic Fungal-Bacterial interactions in Biodegradation of OCPs and Bioremediation of contaminated sites (Extreme-BFI) - (Project: DAAD)
  • 2016-2019: Role of compost derived fungi for the colonization of the rhizosphere of table grapes by plant beneficial bacteria (Universidad de La Frontera; Prof. Milko A. Jorquera and Susett Gonzalez, Temuco, Chile)
  • 2019-2020: Elucidating biomarkers and functions of bacterial-fungal interactions during the degradation of polycyclic aromatic hydrocarbons at changing environmental conditions (Université de Pau et des Pays de l'Adour, Equipe Environment et Microbiologie) (FungDeg): FungDeg


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2019 (3)
2018 (13)
2017 (15)
2016 (10)
2015 (10)
2014 (7)
2013 (9)
2012 (14)
2011 (7)
2010 (14)

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2013 (9)

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2010 (14)

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