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Teamwork against Benzene
Date:7/26/2012

appens there", says Martin von Bergen. It is in fact clear that degradation still takes place, even in the absence of oxygen, as earlier studies at the UFZ in which, above all, scientists of the Department of Isotope Biogeochemistry collaborated, have shown. Biochemists can explain part of this process relatively well. However, the first step of the biological attack against benzene remains a mystery so far. Indeed, until recently researchers had only limited conceptions of the bacteria taking part and their respective tasks.

Search for evidence in the microbial sphere

This has now changed. For the first time the new study, in which scientists of the Departments of Soil Ecology, Environmental Microbiology, Isotope Biogeochemistry and Proteomics collaborated, showed a rather detailed picture of the benzene eliminator community. "This was not a question of identifying every single type taking part", explains Martin von Bergen. This is generally difficult with environmental samples, because many of the types taking part have not yet even been described. Moreover, in the microbial realm "type" is a rather vague concept posing difficulties even for experts.

On the other hand, we can readily differentiate between groups having different functions. "Bacteria are team players", explains Martin von Bergen. Just as there are specialists for management, bookkeeping or production within a company, the degradation of benzene requires the cooperation of microorganisms with different talents. Whether or not one or several types serve to perform a given task is of secondary importance. Important is that the job gets done.

In order to investigate the nature of this division of tasks amongst the microbial benzene fans the researchers took samples of impacted underground water from Zeitz for analysis in the laboratory. There they subjected the proteins of the organisms to a so-called isotopic analysis. This procedure is based on the existence of two diffe
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Contact: Tilo Arnhold
presse@ufz.de
49-341-235-1635
Helmholtz Association of German Research Centres
Source:Eurekalert  

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