- Ph.D., University of Virginia
- Office: 516 Life Sciences Building
- Phone: 419-372-8527
- Email: firstname.lastname@example.org
- Microbial physiology; Cyanobacteria
- Center for Photochemical Sciences
Our work is currently focused on detection, enumeration and the physiological performance of phototrophs and ecologically important chemolithotrophs in aquatic systems. We have identified genes and gene products inducible under nutrient (N, S, P) limitation and stationary phase conditions, and this work has aided in the development of whole-cell biosensors (bioreporters) detecting the bioavailability of nutrients in environmental samples. Additionally, we examine the composition and dynamics of cyanobacterial and nitrifying communities in freshwater environments, focusing primarily on the N and P cycles in the Laurentian Great Lakes.
French, E., J. Kozlowski, M. Mukherjee, G. Bullerjahn and A. Bollmann. 2012. Niche differentiation between ammonia-oxidizing archaea and bacteria based on differences in their growth responses to environmental factors. Applied and Environmental Microbiology 78: 5773-5780.
M.R. Twiss, R.M.L. McKay, R.A. Bourbonniere, G.S. Bullerjahn, H.J. Carrick, R.E.H. Smith, J.G. Winter, N. D'Souza, P.C. Furey, A.R. Lashaway, M.A. Saxton and S.W. Wilhelm. 2012. Diatoms abound in ice-covered Lake Erie: an investigation of offshore winter limnology in Lake Erie over the period 2007 to 2010. Journal of Great Lakes Research 38: 18-30.
Kutovaya, O.A. R.M.L. McKay, B.F.N. Beall, S.W. Wilhelm, D.D. Kane, J.D. Chaffin, T.B. Bridgeman and G.S. Bullerjahn. 2012. Evidence against fluvial seeding of recurrent toxic blooms of Microcystis spp. in Lake Erie's western basin. Harmful Algae 15: 71-77.
McKay, R.M.L., B.F.N. Beall, G.S. Bullerjahn and W.C. Woityra. 2011. Winter limnology in the Great Lakes: role of the U.S. Coast Guard. Journal of Great Lakes Research 37: 207-210.
Ilikchyan, I.N., R.M.L. McKay, O.A. Kutovaya, R. Condon and G.S. Bullerjahn. 2010. Seasonal expression of the picocyanobacterial phosphonate transporter gene phnD in the Sargasso Sea. Frontiers in Microbiology 1: 135. doi:10.3389/fmicb.2010.00135.
Bullerjahn, G.S., R. Boyanpalli, M.J. Rozmarynowycz and R.M.L. McKay. 2010. Cyanobacterial bioreporters as sensors of nutrient availability. Advances in Biochemical Engineering/ Biotechnology 118: 165-188.
Ilikchyan, I.N., R.M.L. McKay, J.P. Zehr, S.T. Dyhrman and G.S. Bullerjahn. 2009. Detection and expression of the phosphonate transporter gene phnD in marine and freshwater picocyanobacteria. Environmental Microbiology 11: 1314-1324.
Sharma, A.K., K. Sommerfeld, G.S. Bullerjahn, A. Matteson, S.W. Wilhelm, J. Jezbera, U. Brandt, W.F. Doolittle and M.W. Hahn. 2009. Widespread distribution of actinorhodopsin genes in freshwater habitats and among diverse actinobacterial lineages. ISME Journal 3: 726-737.
Hulsker, R., M.V. Baranova, G.S. Bullerjahn and M. Ubbink. 2008. Dynamics in the transient Prochlorothrix hollandica plastocyanin-cytochrome f complex. Journal of the American Chemical Society 130: 1985-1991.
Ivanikova, N.V., R.M.L. McKay, G.S. Bullerjahn and R.W. Sterner. 2007. Nitrate utilization in Lake Superior is impaired by low nutrient (P, Fe) availability and seasonal light limitation a cyanobacterial bioreporter study. Journal of Phycology 43: 475-484.
Ivanikova, N.V., L. Popels, R.M.L. McKay and G.S. Bullerjahn. 2007. Lake Superior supports unique clusters of cyanobacterial picoplankton. Applied and Environmental Microbiology 73: 4055-4066.
Boyanapalli, R., G.S. Bullerjahn, C. Pohl, P.L. Croot, P.W. Boyd and R.M.L. McKay. 2007. Luminescent whole-cell cyanobacterial bioreporter for measuring Fe availability in diverse marine environments. Applied and Environmental Microbiology 73:1019-1024
Wilhelm, S.W., G.S. Bullerjahn, J.M. Rinta-Kanto, M.L. Eldridge and R.A. Bourbonniere. 2006. Seasonal hypoxia and the genetic diversity of prokaryote populations in the central basin hypolimnion of Lake Erie: evidence for abundant picocyanobacteria and photosynthesis. Journal of Great Lakes Research 32: 657-671.
Hassler, C.S., M.R. Twiss, R.M.L. McKay and G.S. Bullerjahn. 2006. Optimization of a cyanobacterial (Synechococcus sp. PCC 7942) bioreporter to measure bioavailablity of iron. Journal of Phycology 42: 324-335.
Ivanikova, N.V., R.M.L. McKay and G.S. Bullerjahn. 2005. Construction and characterization of a freshwater cyanobacterial bioreporter capable of assessing nitrate assimilatory capacity in freshwaters. Limnology and Oceanography: Methods 3: 86 - 93.