- Postdoctoral Researcher, Harvard University, 2008-2011
- Ph.D., Virginia Tech, 2008
- B.S., Central Michigan University, 2003
My overall research interests are directed towards understanding the genetic and physiological responses of microorganisms that control biogeochemical cycles in various environments, ranging from lakes to soils. Specifically, my lab focuses on describing how microorganisms interact with minerals that control geochemical cycles. Minerals, such as iron (Fe) and manganese (Mn) oxides, are ubiquitous in the environment and important for controlling the fate of toxic metals (e.g. lead, chromium), carbon cycling, and soil stability.
As a member of the CMU Institute for Great Lakes Research, my lab is also interested in understanding how these dynamic processes function in the Great Lakes Basin. To understand these processes my lab utilizes a range of conventional and sophisticated techniques in molecular biology, biochemistry, and geochemistry.
- Learman, D.R. and Hansel, C.M. (2014) Comparative proteomics of Mn(II)-oxidizing and non-oxidizing Roseobacter clade bacteria reveal an operative manganese transport system but minimal Mn(II)-Microbiology Reports, available online, May 5, 2014, DOI :10.1111/1758-2229.12164.
- Learman, D.R., Voelker, B.M., Madden, A.S., and Hansel, C.M. (2013) Constraints on superoxide mediated formation of manganese oxides. Frontiers in Microbiology, 4:262, DOI: 10.3389/fmicb.2013.00262.
- Learman, D.R., Webb S.M., Wangek, S.D., Martinez, N., Madden, A.S., and Hansel, C.M. (2011) Coupled biotic-abiotic Mn(II) oxidation pathway mediates the formation and structural evolution of biogenic Mn oxides. Geochimica et Cosmochimica Acta, Volume: 75, Pages: 6048-6063.
- Learman, D.R., Voelker, B.M., Vazquez-Rodtiguez, A.I., and Hansel, C.M. (2011) Formation of Manganese oxides by bacterially generated superoxide. Nature Geoscience, Volume: 4, Pages: 95-98.
- Learman, D.R., Yi, H., Brown, S.D., Martin, S.L., Geesey, G.G., Stevens, A.M., and Hochella, M.F. Jr. (2009) Involvement of Shewanella oneidensis MR-1 LuxS in biofilm development and sulfur metabolism, Applied and Environmental Microbiology, Volume: 75 Issue 5, Pages: 1301-1307.