Utilization of DNA as a sole source of phosphorus, carbon, and energy by Shewanella spp.: ecological and physiological implications for dissimilatory metal reduction.

@article{Pinchuk2008UtilizationOD,
  title={Utilization of DNA as a sole source of phosphorus, carbon, and energy by Shewanella spp.: ecological and physiological implications for dissimilatory metal reduction.},
  author={Grigoriy E. Pinchuk and Christine G Ammons and David E. Culley and Shu-mei W. Li and Jeff S McLean and Margaret F. Romine and Kenneth H Nealson and Jim K. Fredrickson and Alexander S. Beliaev},
  journal={Applied and environmental microbiology},
  year={2008},
  volume={74 4},
  pages={1198-208}
}
The solubility of orthophosphate (PO4(3-)) in iron-rich sediments can be exceedingly low, limiting the bioavailability of this essential nutrient to microbial populations that catalyze critical biogeochemical reactions. Here we demonstrate that dissolved extracellular DNA can serve as a sole source of phosphorus, as well as carbon and energy, for metal-reducing bacteria of the genus Shewanella. Shewanella oneidensis MR-1, Shewanella putrefaciens CN32, and Shewanella sp. strain W3-18-1 all grew… CONTINUE READING