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Teamwork against Benzene
Date:7/26/2012

refore succeeded in tracking the path of benzene atoms through the entire bacterial community", says Martin von Bergen proudly. The researchers have not only discovered who ingests what in which amounts. They now know more about how the co-operation between the different teams of bacteria functions. Thus, the directly feeding bacteria for the degradation of benzene presumably produce both acetate and hydrogen. However, they must release both substances, as these would otherwise inhibit their metabolism. Here the organisms of the second group, which feed only indirectly on the harmful substance, come to their aid by utilising the acetate as a source of carbon and eliminating the hydrogen.

A new look at sewage sludge and the intestinal tract

"Such co-operations of course not only exist amongst benzene eliminators", says Martin von Bergen. With the aid of their methods he and his colleagues hope to be able to analyse other complex bacterial communities. For example, it would be possible to investigate the co-operation of different microbes in biogas plants or in sewage sludge. An understanding of these processes would make better control of the processes possible in such plants. Such investigations can also furnish new knowledge for medicine. One knows, for example, that thin persons have other microorganisms in the gastrointestinal tract than obese persons. In addition, the bacterial flora also appear to influence the immune system. One would like to know more about all of these relationships in order to help people lose weight or reinforce their natural defences, for example.

"Bacterial communities live everywhere, from the flower pot to within the human body", Martin von Bergen sums up. Previously microbiologists investigated above all which organisms occur where. However, now they want to know more about their activities and co-operations. For Martin von Bergen and his colleagues this "functional biodiversity" is a promising subject for fu
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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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