English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Taking nature into lab: biomineralization by heavy metal-resistant streptomycetes in soil

MPS-Authors
/persons/resource/persons101553

Baumert,  Julia
Molecular Biogeochemistry Group, Dr. G. Gleixner, Department Biogeochemical Processes, Prof. S. E. Trumbore, Max Planck Institute for Biogeochemistry, Max Planck Society;

External Ressource
Fulltext (public)

BGC1874.pdf
(Publisher version), 3MB

BGC1874D.pdf
(Publisher version), 2MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Schuetze, E., Weist, A., Klose, M., Wach, T., Schumann, M., Nietzsche, S., et al. (2013). Taking nature into lab: biomineralization by heavy metal-resistant streptomycetes in soil. Biogeosciences, 10, 3605-3614. doi:10.5194/bg-10-3605-2013.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0014-4A4F-B
Abstract
Biomineralization by heavy metal-resistant streptomycetes was tested to evaluate the potential influence on metal mobilities in soil. Thus, we designed an experiment adopting conditions from classical laboratory methods to natural conditions prevailing in metal-rich soils with media spiked with heavy metals, soil agar, and nutrientenriched or unamended soil incubated with the bacteria. As a result, all strains were able to form struvite minerals (MgNH4PO4 6H2O) on tryptic soy broth (TSB)-media supplemented with AlCl3, MnCl2 and CuSO4, as well as on soil agar. Some strains additionally formed struvite on nutrient-enriched contaminated and control soil, as well as on metal contaminated soil without addition of media components. In contrast, switzerite (Mn3(PO4)2 7H2O) was exclusively formed on minimal media spiked with MnCl2 by four heavy metal-resistant strains, and on nutrient-enriched control soil by one strain. Hydrated nickel hydrogen phosphate was only crystallized on complex media supplemented with NiSO4 by most strains. Thus, mineralization is a dominant property of streptomycetes, with different processes likely to occur under laboratory conditions and sub-natural to natural conditions. This new understanding might have implications for our understanding of biological metal resistance mechanisms. We assume that biogeochemical cycles, nutrient storage and metal resistance might be affected by formation and re-solubilization of minerals like struvite in soil at microscale.