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2012 Annual Science Report

VPL at University of Washington Reporting  |  SEP 2011 – AUG 2012

Postdoctoral Fellow Report: Steven Mielke

Project Summary

S. P. Mielke completed an NAI NASA Postdoctoral Program (NPP) fellowship during September 1, 2011 to February 29, 2012. His postdoctoral research has provided the basis for the project: “The Long-Wavelength Limit for Oxygenic Photosynthesis.” He continues this research as a Research Associate at Rockefeller University.

4 Institutions
3 Teams
8 Publications
0 Field Sites
Field Sites

Publications

  • Mielke, S. P., Kiang, N. Y., Blankenship, R. E., & Mauzerall, D. (2013). Photosystem trap energies and spectrally-dependent energy-storage efficiencies in the Chl d-utilizing cyanobacterium, Acaryochloris marina. Biochimica et Biophysica Acta (BBA) – Bioenergetics, 1827(3), 255–265. doi:10.1016/j.bbabio.2012.11.002

  • Mielke, S. P., Kiang, N. Y., Blankenship, R. E., Gunner, M. R., & Mauzerall, D. (2011). Efficiency of photosynthesis in a Chl d-utilizing cyanobacterium is comparable to or higher than that in Chl a-utilizing oxygenic species. Biochimica et Biophysica Acta (BBA) – Bioenergetics, 1807(9), 1231–1236. doi:10.1016/j.bbabio.2011.06.007

  • Dong, M., Mielke, S.P. & Gunner, M.R.  (in prep.).  Comparison of chlorophyll a and d electrochemistry and affinity in A. marina and T. elongatus PSII reaction centers.
  • Mauzerall, D. & Mielke., S.P.  (in prep.).  Energy changes in photosynthetic electron transport: Probing photosynthesis by pulsed photoacoustics.  In: Golbeck, J.H. & Van Der Est, A. (Eds.).  The Biophysics of Photosynthesis.
  • Mielke, S.P., Kiang, N.Y., Blankenship, R.E. & Mauzerall, D.  (2011).  Efficiency of oxygenic photosynthesis in the far red light-utilizing cyanobacterium, Acaryochloris marina.  Origins 2011: ISSOL and Bioastronomy Joint International Conference.  Montpellier, France.
  • Mielke, S.P., Kiang, N.Y., Blankenship, R.E. & Mauzerall, D.  (2012).  Spectral-dependence of the in vivo energy-storage efficiency in the Chl d cyanobacterium, Acaryochloris marina.  29th Eastern Regional Photosynthesis Conference.  Marine Biological Laboratory, Woods Hole, MA.
  • Mielke, S.P., Kiang, N.Y., Blankenship, R.E., Gunner, M.R., Dong, M. & Mauzerall, D.  (2011).  Efficiency of photosynthesis in the Chl d-utilizing cyanobacterium, Acaryochloris marina.  At the Interface of Natural and Artificial Photosynthesis.  Rensselaer Polytechnic Institute, Troy, NY.
  • Mielke, S.P., Kiang, N.Y., Blankenship, R.E., Gunner, M.R., Dong, M. & Mauzerall, D.  (2012).  Photosynthetic energy-storage in the cyanobacterium, Acaryochloris marina: Oxygenic photochemistry at the red edge.  AbSciCon 2012 – Exploring Life: Past and Present, Near and Far.  Georgia Tech, Atlanta, GA.
  • PROJECT INVESTIGATORS:
    Steven Mielke
    Postdoc
  • PROJECT MEMBERS:
    Nancy Kiang
    Project Investigator

    David Mauzerall
    Co-Investigator

    Robert Blankenship
    Collaborator

    Marilyn Gunner
    Collaborator

  • RELATED OBJECTIVES:
    Objective 3.2
    Origins and evolution of functional biomolecules

    Objective 4.2
    Production of complex life.

    Objective 5.1
    Environment-dependent, molecular evolution in microorganisms

    Objective 5.3
    Biochemical adaptation to extreme environments

    Objective 6.2
    Adaptation and evolution of life beyond Earth

    Objective 7.2
    Biosignatures to be sought in nearby planetary systems