Faculty:Sarah E. Wyatt






Sarah E. Wyatt
Associate Professor

Ph.D., Purdue University, 1995
Plant Physiology and Molecular Biology

Phone: 740.593.1133
Fax: 740.593.1130
Email: wyatts@ohio.edu

 

Also visit:

The Wyatt lab
Ohio University Genomics Facility
OU Bioinformatics Working Group
Enhancing Critical Thinking in Introductory Courses
The Plant Biology Module of Space Biology: an Educators Resource

Courses:

Departmental Service:

  • Curriculum Committee, PBIO
  • Promotion & Tenure Committee
  • Curriculum Committee, MCB (Chair)

Research Program Summary

Plant growth and development with an emphasis on the use of molecular and genetic tools to study plant responses to environmental stimuli.

  • Gravity is a constant stimulus governing the orientation of plant growth.  In response to changes in the gravity vector, plant stems and roots bend by differential growth.  The gravitropic response can be separated into three steps: stimulus perception, signal transduction and asymmetric growth of the responding tissue.  We took advantage of a cold effect on the gravity response pathway to select for mutants of Arabidopsis with altered signal transduction.  We have identified several gps (gravity persistent signal) mutants at three independent loci (GPS1, GPS2, and GPS3).  Physiological and molecular characterization of these mutants is ongoing.

Selected References

  • Roberts, D.R., V. Nadella, and S.E. Wyatt. 2007.  ARF9 and the Gravitropic Persistence Signal response.  Gravitational and Space Biology 20:103-104.

  • H. L. Sanders, G.W. Rothwell, and S.E. Wyatt. 2007. A paleontological context for the developmental mechanisms of evolution. International Journal of Plant Sciences 168:719-728.

  • Wyatt, S.E. and H. E. Ballard. 2006. Arabidopsis ecotypes: A model for course projects in organismal plant biology and evolution. The American Biology Teacher 69:477-481.

  • Nadella, V., C.D. Hildenbrand, and S. E. Wyatt. 2006. Transcription profiling of the gps1 mutant of Arabidopsis provides insights into gravitropic signal transduction. Invited submission: Gravitational and Space Biology 20:155-156.

  • Wyatt, S.E. 2005. Extending inquiry-based learning to include original experimentation.  Journal of General Education 54: 83-89.

  • Lev-Yadun, S., S.E. Wyatt, and M.A. Flaishman. 2005. The inflorescence stem fibers of Arabidopsis thaliana revoluta (ifl1) mutant. Journal of Plant Growth Regulation 23:301-306. (Cover)

  • Nadella, V., Shipp, M.J., Muday, G. K. and Wyatt, S.E. 2005 Evidence for altered polar and lateral auxin transport in the gravity persistent signal (gps) mutants of Arabidopsis. Plant Cell and Environment 29:682-690. (cover)

  • Wyatt, S.E., Rashotte, A., Shipp, M.J., Muday, G.K., and Robertson, D. 2002 Mutations in the GPS loci in Arabidopsis disrupt the perception and/or signal transduction of gravitropic stimuli. Plant Physiology 130, 1426-1435.

  • Wyatt, S.E. 2002 The ups and downs of gravity. Pages 45-55 In A.J. Wood [ed.], Biochemical and molecular responses of plants to the environment. Research Signpost, Trivandrum, India.

  • Wyatt, S. E., Tsou, P.-L., and Robertson, D. 2002 Expression of the high capacity calcium-binding domain of calreticulin increases bioavailable calcium stores. Transgenic Research 11, 1-10.

  • Wyatt, S. E., Perrson, S., Love, J., Thompson, W., Robertson, D., and Boss, W.F. 2001 Altered expression of calreticulin alters intracellular calcium storage and release in tobacco suspension culture cells. Plant Physiology 126, 1092-1104.

Faculty Research Focus Group


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