Mark Alan Buchheim

Mark Buchheim

Associate ProfessorOH 312
mark-buchheim@utulsa.eduBuchheim Laboratory Page

My primary research interests are focused on the phylogenetic reconstruction and molecular evolution of the green algae with particular emphasis on the genus Chlamydomonas and its allies (including Carteria, Haematococcus, Chloromonas, and Chlorococcum). In addition, I am studying the enigmatic group of green algae known as the Sphaeropleaceae. My lab has been a leader in the use of ribosomal (18S, 28S and ITS) and chloroplast-encoded rbcL and atpB genes to infer phylogenetic relationships in the green algae. I served as PI and member of the Executive Committee of Deep Green, a USDA/NSF/DOE-funded project involving the coordination of research effort in green plant phylogeny (i.e., the study of phylogenetic relationships among the major green algal and embryophyte lineages). I am currently collaborating on a project to study microbial diversity at the Great Salt Plains of Oklahoma.

Education and Degrees Earned

  • Ph.D., Plant Biology, University of Illinois at Urbana-Champaign, 1988
  • M.S., Botany, Iowa State University, 1983
  • B.A., Biology & Psychology, Wartburg College, 1979

Areas of Research Focus

  • Molecular Phylogenetics
  • Microbial Diversity
  • Molecular Evolution

Previous Teaching Experience

  • Assistant Professor, 1992-1998, Faculty of Biological Science, The University of Tulsa
  • Adjunct Professor, 2001 (summer), Division of Science and Mathematics, Tulsa Community College
  • Adjunct Professor, 2007-present, Dept of Microbiology and Molecular Biology, Oklahoma State University

Previous Relevant Work Experience

  • Graduate Teaching Assistant, 1979-1981, Department of Botany, Iowa State University
  • Graduate Research Assistant, 1981-1982, Department of Botany, Iowa State University
  • Graduate Teaching Assistant, 1984-1985, Department of Plant Biology, University of Illinois at Urbana-Champaign
  • Graduate Research Assistant, 1982-1983, 1986-1987, Department of Plant Biology, University of Illinois at Urbana-Champaign
  • Visiting Life Sciences Specialist in Laboratory Teaching, 1987-1988, Department of Plant Biology, University of Illinois at Urbana-Champaign
  • Postdoctoral Researcher, 1988-1992, Department of Botany, Louisiana State University

Professional Affiliations

  • American Society of Microbiologists

Courses Taught at TU

  • Evolution (BIOL 3143)
  • Introduction to Organismic & Evolutionary Biology (BIOL 1603)

Awards & Recognition

  • Wartburg College Distinguished Alumni Award
  • Zelimir Schmidt Award for Outstanding Research (University of Tulsa)


  • Buchheim, M. A., Lemieux, C., Otis, C., Gutell, R.R., Chapman, R. L. and Turmel, M. 1996. Phylogeny of the Chlamydomonadales (Chlorophyceae): A comparison of ribosomal RNA gene sequences from the nucleus and the chloroplast. Molecular Phylogenetics and Evolution 5:391-402.

  • Kirkwood, A. E., Buchheim, J. A., Buchheim, M. A. and Henley, W. J. 2007. Cyanobacteria diversity and halotolerance in a variable hypersaline environment. Microbial Ecology. Online: DOI 10.1007/s00248-007-9291-5

  • Wilson, C., Caton, T.M., Buchheim, J.A., Buchheim, M.A., Schneegurt, M.A. & Miller, R.V. 2004. DNA-repair potential in Halomonas spp. from the Salt Plains Microbial Observatory of Oklahoma. Microbial Ecology 48:541-549.

  • Padhi, A, Buchheim, M. and Verghese, B. 2008. Dynamic evolutionary pattern of α2-macroglobulin in a model organism, the Zebrafish (Danio rerio). Molecular Immunology 45: 3312-3318.

  • Buchheim, M. A. 2000. Green Algae. In: Encyclopedia of Life Sciences (online at Macmillan Reference Ltd.

  • Caton, T. M. Witte, L. R, Ngyuen, H. D., Buchheim, J. A., Buchheim, M. A., & Schneegurt, M. A. 2004. Halotolerant Aerobic Heterotrophic Bacteria from the Great Salt Plains of Oklahoma. Microbial Ecology 48:449-62. Online:

  • Fawley, M. W., Fawley, K. P. & Buchheim, M. A. 2004. Molecular diversity among communities of freshwater microchlorophytes. Microbial Ecology 48:489-99. Online:

  • Chapman, R. L., Buchheim, M. A., Delwiche, C. F., Friedl, T., Huss, V. A. R., Karol, K. G., Lewis, L. A., Manhart, J., McCourt, R. M., Olsen, J. L., & Waters, D. A. 1998. Molecular systematics of the green algae. In: Soltis, D & Soltis, P. [Eds.] Molecular Systematics of Plants II. Chapman-Hall, p 508-540.

  • Henley, W. J., Hironaka, .J. L., L. Guillou, L., Buchheim, M. A. Buchheim, J. A.,Fawley, M. W. & Fawley, K. P. 2004. Phylogenetic analysis of the “Nannochloris-like” algae and diagnoses of Picochlorum oklahomensis gen. et sp. nov. (Trebouxiophyceae, Chlorophyta). Phycologia 43(6): 641-652.

  • Wolf, M., Buchheim, M. A.. Hegewald, E., Krienitz, L. & Hepperle, D. 2002. Phylogenetic position of the Sphaeropleaceae (Chlorophyta). Plant Systematics and Evolution 230:161-171.