Wednesday, July 8, 2009

New Species Publication

We are proud to announce a new paper coming out in the International Journal of Systematic and Evolutionary Microbiology, “Geobacter daltonii sp. nov., an iron(III)- and uranium(VI)-reducing bacterium isolated from the shallow subsurface exposed to mixed heavy metal and hydrocarbon contamination,” by Om Prakash, Tom Gihring, Dava Dalton, Kuki Chin, Stefan Green, Denise Akob, Greg Wanger, and Joel Kostka. This paper describes a new species of Geobacter isolated from the contaminated subsurface of a nuclear legacy waste site in Oak Ridge, Tennessee, managed by the U.S. Dept. of Energy.

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Dr. Om Prakash, the lead author on this paper, cultivated a full 3 grams of G. daltonii to show that the genotype of the new strain is very different from its closest relative, G. uraniireducens (DNA-DNA hybridization value of 21 %). Here is Om with a giant flask of the uranium-breathing bug.