Publications

 

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Peer Reviewed
 
 
  • J. Raymond, J.L. Siefert, C.R. Staples, and R.E. Blankenship, The natural history of nitrogen fixation, Molecular Biology and Evolution, e-published ahead of print. PDF

  • K. Martin, J.L. Siefert, S. Yerrapragada, Y. Lu, T.Z. McNeil, P.A. Moreno, G.M. Weinstock, W.R. Widger, and G.E. Fox, Cyanobacteria signature genes, Photosynthetic Research, 75:211-221, 2003 PDF
  • J.F. Kasting and J.L. Siefert, Life and the evolution of Earth's atmosphere, Science , 296:1066-1068, 2002 PDF
  • J.F. Kasting and J.L. Siefert, Biogeochemistry- The nitrogen fix, Nature 412:26-27, 2001 PDF
  • J.F. Kasting, A.A. Pavlov, and J.L. Siefert, A coupled ecosystem-climate model for predicting the methane concentration in the Archean atmosphere, Origins Life Evol B 31:271-285, 2001
  • K.O.F. Hedenstierna, J.L. Siefert, G.E. Fox, and E.J. Murgola, Co-conservation of rRNA tetraloop sequences and helix length suggests involvement of the tetraloops in higher order interactions, Biochemie, 82:221-227, 2000
  • J.L. Siefert, M. Larios-Sanz, N.K. Nakamura, R.A. Slepecky, J.H. Paul, E.R.B. Moore, G.E. Fox, and P. Jurtshuk, Jr., Phylogenetic position of marine Bacillus isolates from the Gulf of Mexico Current Microbiology, 41:84-88, 2000.
  • J.L. Siefert and G.E. Fox, Phylogenetic mapping of bacterial morphology, Microbiology, 144:2803-2808, 1998 PDF
  • J.L. Siefert, K.A. Martin, F. Abdi, W.R. Widger and G.E. Fox, Conserved gene clusters in bacterial genomes provide further support of the primacy of RNA, J. of Mol. Evol., 45:467-472, 1997. PDF
Books or chapters
 
 
  • The Phylogeny of Bacterial Shape in Molecules in Time and Space:
    bacterial shape, division and phylogeny. Editors M. Vicenta, A. Valencia, J. Tamames, and J. Mingorance. 2004

Invited Talks

Janet Siefert
 
  • Horizontal Gene Transfer and the Evolution of Nitrogen Fixation, Seventh Conference on Chemical Evolution and the Origin of Life, Trieste, Italy, 9/2003
  • The Natural History of Nitrogen Fixation, Exobiology Principle Investigators’ Meeting Seventh Triennial Science Conference, NASA Ames, August 25-29, 2003
  • Real rates of RNA Evolution and their relevance to an RNA World, IAU Sympoisum 213 "Bioastronomy 2002: Life Among the Stars, July 2002
  • Nitrogenase and the Rise of O2 in the Archean, EUG Meeting, 4/2001
  • Molecular Phylogeny: Unveiling the Origin and Early Evolution of Life. Frontiers of Science Lecture Series, Penn State University 1/29 (2000)
  • Reconstructing Ribozyme Phylogeny: Who Begat Whom?, VII ESEB Congress, Barcelona, Spain, 8/23-28 (1999)
  • Phylogenetic Reconstruction of Morphology Genes, NCBI, National Library of Medicine, National Institutes of Health, Bethesda, MD, 5/21 (1999)

Eduation/Public Outreach

 
 
  • Astrobiology Course for teachers, Open Community Lecture, Spring, 2004, Rice University
  • Astrobiology General Meeting 2002, Student Poster Judge 4/2002
  • Lead-Organizer of the 1999-2000 Houston Astrobiology Seminar Series, a schedule of scientific and community talks concerned with bringing science, astrobiology specifically, into the community.
  • NASA Teacher/Scientist Cooperative Grant. 12/1998. In collaboration with Westfield High School, Houston, TX, Ms. Leyla Morrison and 11th Grade English and Second Language Science Classes, Spring IDS.
  • Scientist Project Supervisor for the Science Engineering Fair of Houston, T.H. Rogers School, Houston I.S.D., 1997, 1998.
  • Speaker, Grades 3-5, Career Day, Houston ISD, 1995.

Non-technical Writing
 
 
  • A Look Back in Time: Discovering the First Bacterium, J. L. Siefert. Focus on Microbiology Education, Spring 2000.
  • The Joining of Two Fossils, State Lines, Texas Magazine, Houston, Chronicle, 4/99
  • Not So Common After All, State Lines, Texas Magazine, Houston Chronicle, 12/95