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BESC researchers tap into genetic reservoir of heat-loving bacteria
Date:7/2/2012

ria grab onto a chunk of plant material to more efficiently break it apart. This finding further clarified why certain bacterial species in the genus are better than others at deconstructing plant material.

"Previously, we knew these bacteria would secrete enzymes that would then freely diffuse into their environment," Blumer-Schuette said. "We assumed that the enzymes would by chance stick to either cellulose or a piece of biomass in their environment and start to degrade it. Now we're seeing that a lot of proteins are involved in maintaining a tight interface between the bacterium and cellulose."

A key challenge in making the production of lignocellulosic biofuels cost-effective is improving the efficiency of access to the sugars imprisoned in a plant's cell wall.

"Yet nature, in the form of the microbes described here, has been doing this very effectively all along," said Paul Gilna, director of BESC, of which the authors are members. "If we can understand the processes already in place with cellulose-degrading organisms such as the Caldicellulosiruptor microbes described here, we can make huge leaps in learning how to harness microbes to digest plant biomass and ferment sugars into biofuels at the same time."


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Contact: Morgan McCorkle
mccorkleml@ornl.gov
865-574-7308
DOE/Oak Ridge National Laboratory
Source:Eurekalert

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