Diversity and ecological roles of marine microbes including Bacteria, Archaea and their viruses using both culture-based and molecular biology techniques.
Addressing the microbial diversity and activities within Mobile Bay and the northern Gulf of Mexico. Characterizing the life cycle and host/virus interactions of STIV, a crenarchaeal virus and Sulfolobus, an acidophilic thermophile. Initial survey and characterization of viruses associated with deep-sea hydrothermal venting on the Juan de Fuca ridge.
Ortmann, A. C. and C. A. Suttle. (in press) Chapter 10: Determination of virus abundance by epifluorescence microscopy. Pp. 87-95, In: Martha R. J. Clokie and Andrew M. Kropinski (Eds.),Bacteriophages: Methods and Protocols, Volume 1: Isolation, Characterization, and Interactions. Humana Press.
Ortmann, A. C., J. Walther, S. K. Brumfield, K. McInnerney, S. J. J. Brouns, H. J. G. van de Werken, B. Bothner, T. Douglas, J. van der Oost and M. J. Young. 2008. Transcriptome analysis of infection of the archaeon Sulfolobus solfataricus with STIV. Journal of Virology 48:4874-4883.
Snyder, J.C., B. Wiedenheft, M. Lavin, F. F. Roberto, J. Sphuler, A. C. Ortmann, T. Douglas and M. Young. 2007. Virus movement maintains local virus population diversity. PNAS 104:19102-19107.
Larson, E. T., B. J. Eilers, S. Menon, D. Reiter, A. C. Ortmann, M. J. Young and C. M. Lawrence. 2007. A winged-helix protein from Sulfolobus Turreted Icosahedral Virus points toward stabilizing disulfide bonds in the intracellular proteins of a hyperthemophilic virus. Virology 368:249-261.
Larson, E. T., B. J. Eilers, D. Reiter, A. C. Ortmann, M. J. Young and C. M. Lawrence. 2007. A new DNA binding protein highly conserved in diverse crenarchaeal viruses. Virology 363:387-396.
Maaty, W. S. A., A. C. Ortmann, M. Dlaki?, K. Schulstad, J. Hilmer, L. Liepold, B. Wiedenheft, T. Douglas, M. Young and B. Bothner. 2006. Characterization of the archaeal thermophile Sulfolobus Turreted Icosahedral virus validates an evolutionary link among dsDNA viruses from all domains of life. Journal of Virology 80:7625-7635.
Ortmann, A. C., B. Wiedenheft, T. Douglas and M. Young. 2006. Hot archaeal viruses reveal deep evolutionary connections. Nature Reviews Microbiology 4:520-528.
Ortmann, A. C. and C. A. Suttle. 2005. High Abundances of Viruses in a Deep-Sea Hydrothermal Vent System Indicates Viral Mediated Microbial Mortality. Deep-Sea Research Part I 52:1515-1527.
Wen, K., A. C. Ortmann and C. A. Suttle. 2004. Accurate Estimation of Viral Abundance by Epifluorescence Microscopy. Applied and Environmental Microbiology 70:3862-3867.
Ortmann, A. C., J. E. Lawrence and C. A. Suttle. 2002. Lysogeny and Lytic Viral Production during a Bloom of the Cyanobacterium Synechococcus spp. Microbial Ecology 43:225-231.