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Schiessl KT, Janssen EM, Kraemer SM, et al. Magnitude and Mechanism of Siderophore-Mediated Competition at Low Iron Solubility in the . Front Microbiol. 2017;8:1964doi: 10.3389/fmicb.2017.01964.
Schiessl, K. T., Janssen, E. M., Kraemer, S. M., McNeill, K., & Ackermann, M. (2017). Magnitude and Mechanism of Siderophore-Mediated Competition at Low Iron Solubility in the . Frontiers in microbiology, 81964. https://doi.org/10.3389/fmicb.2017.01964
Schiessl, Konstanze T, et al. "Magnitude and Mechanism of Siderophore-Mediated Competition at Low Iron Solubility in the ." Frontiers in microbiology vol. 8 (2017): 1964. doi: https://doi.org/10.3389/fmicb.2017.01964
Schiessl KT, Janssen EM, Kraemer SM, McNeill K, Ackermann M. Magnitude and Mechanism of Siderophore-Mediated Competition at Low Iron Solubility in the . Front Microbiol. 2017 Oct 10;8:1964. doi: 10.3389/fmicb.2017.01964. eCollection 2017. PMID: 29085345; PMCID: PMC5649157.
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Front Microbiol. 2017 Oct 10;8:1964. doi: 10.3389/fmicb.2017.01964. eCollection 2017.

Magnitude and Mechanism of Siderophore-Mediated Competition at Low Iron Solubility in the .

Frontiers in microbiology

Konstanze T Schiessl, Elisabeth M-L Janssen, Stephan M Kraemer, Kristopher McNeill, Martin Ackermann

Affiliations

  1. Department of Environmental Systems Science, Institute of Biogeochemistry and Pollutant Dynamics, Swiss Federal Institute of Technology, Zurich, Switzerland.
  2. Department of Environmental Microbiology, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland.
  3. Department of Environmental Chemistry, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland.
  4. Department of Environmental Geosciences, University of Vienna, Vienna, Austria.

PMID: 29085345 PMCID: PMC5649157 DOI: 10.3389/fmicb.2017.01964

Abstract

A central question in microbial ecology is whether microbial interactions are predominantly cooperative or competitive. The secretion of siderophores, microbial iron chelators, is a model system for cooperative interactions. However, siderophores have also been shown to mediate competition by sequestering available iron and making it unavailable to competitors. The details of how siderophores mediate competition are not well understood, especially considering the complex distribution of iron phases in the environment. One pertinent question is whether sequestering iron through siderophores can indeed be effective in natural conditions; many natural environments are characterized by large pools of precipitated iron, and it is conceivable that any soluble iron that is sequestered by siderophores is replenished by the dissolution of these precipitated iron sources. Our goal here was to address this issue, and investigate the magnitude and mechanism of siderophore-mediated competition in the presence of precipitated iron. We combined experimental work with thermodynamic modeling, using

Keywords: Pseudomonas aeruginosa; competition; iron uptake; microbial interactions; pyochelin; siderophore

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