photo Karen Renzaglia

Karen Sue Renzaglia

Associate Professor
 
Ph.D. 1981, Southern Illinois University
 
Early land plant anatomy, morphology & phylogeny
 
Office & Lab: Life Science II room 459
Office & Lab Phone: 618-453-3229
email: KR
webpage

Research Interests

My lab focuses on describing the ultrastructure, morphology and development of cells, tissues and organs in bryophytes, pteridophytes, and seed plants. These studies have generated new phylogenetic information and new insight into evolutionary modifications of cell architecture and ontogeny. I am currently a collaborator on the Green Tree of Life project and a PI on a hornwort biodiversity and biogeography project. My research team, the Green Morphology Group, includes graduate and undergraduate students who are involved in a variety of projects including ultrastructural studies detailing sperm cell development, fertilization in ferns, sporogenesis in bryophytes, and experimental studies to ascertain the role of the cytoskeleton in cell differentiation.

Selected Publications

  1. Renzaglia, K. S., S. Schutte, R. J. Duff, Ligrone, J. Shaw, B. Mishler, and J. Duckett. 2007. Bryophyte phylogeny: advancing the molecular and morphological frontiers. The Bryologist, In Press
  2. Duff, R. Joel., J. C. Villarreal, D. C. Cargill, and K. S. Renzaglia. 2007. Progress and challenges toward developing a phylogeny and classification of the hornworts. The Bryologist, In Press
  3. Vaughn, K.C. and K.S. Renzaglia. 2006. Structural and immunocytochemical characterization of the locomotory apparatus in the sperm of Ginkgo biloba L. Protoplasma, 227, 165-173.
  4. Villarreal, J.C. and K.S. Renzaglia. 2006. Sporophyte structure in the neotropical hornwort Phaeomegaceros fimbriatus: implications for phylogeny, taxonomy and character evolution. International Journal of Plant Sciences, 167, 413-427.
  5. Villarreal, J.C. and K.S. Renzaglia. 2006. Structure and development of Nostoc strands in Leiosporoceros dussii (Anthocerotophyta): a novel symbiosis in land plants. American Journal of Botany, 95, 693-705.
  6. Cargill, D.C., K.S. Renzaglia, J.C. Villarreal, and R.J. Duff.  2005. Generic concepts within hornworts: historical review, contemporary insights and future directions. Australian Journal of Botany. 18:1-10.
  7. Shaw, A.J., and K. S. Renzaglia.  2004. Phylogeny and diversification of bryophytes.  American Journal of Botany. 91:1557-1581.
  8. Duff, R.J., D.C. Cargill, J.C. Villarreal and K.S. Renzaglia.  2004. Phylogenetic relationships of the hornworts based on rbcL sequence data: novel relationships and new insights. In: Molecular Systematics of Bryophytes, Eds. Goffinet, Hollowell, and Magill. Monographs in Systematic Botany, Missouri Botanical Garden. 98:41-58.
  9. Renzaglia, K.S., K.D. Wood, G. Rupp, and L.G. Hickok. 2004. Characterization of the sleepy sperm mutant in the fern Ceratopteris richardii: A new model for the study of axonemal function. Canadian Journal of Botany 82: 1602-1617.
  10.  Renzaglia, K.S., S.B. Dengate, S.J. Schmitt, and J.G. Duckett. 2002. Novel features of Equisetum arvense spermatozoids: insights into pteridophyte evolution. New Phytologist 154: 159-174.
  11. Ligrone, R., K.S. Renzaglia., K.C. Vaughn, J.P. Knox, and J.G. Duckett. 2002. Diversity in the distribution of polysaccharide and glycoprotein epitopes in the cell walls of bryophytes: new evidence for the multiple evolution of water-conducting cells. New Phytologist 156: 491-508.

SIUC / College of Science / Plant Biology
URL: http://www.science.siu.edu/plant-biology/BioPages/Renzaglia.bio.html
Last updated: 25-Sept-07 / dln