Skip to main content Skip to navigation

Gerald Edwards

Field of Study: Climate/Photosynthesis
Title: Regents Professor
Degrees: Ph.D., Plant Science, University of California at Riverside
Homepage: Homepage/Lab Web Site Link
Google Scholar:  Google Scholar
Office: 301 Heald
Phone: 509-335-2539
Fax: 509-335-3184
Mailing Address: School of Biological Sciences
Washington State University
PO Box 644236
Pullman,WA 99164-4236


I work on mechanisms of photosynthesis, including effects of environmental stress and global climate change, with studies ranging from the cellular to the whole plant level in C3, C4 and CAM plants. Research on C4 photosynthesis is focused on diversity in structure, function and evolution in grasses and eudicot families. This includes studies on species in family Chenopodiaceae from Central Asian Deserts that are adapted to high temperature, drought, and salinity. Research is also being conducted on chenopods which, surprisingly, can perform C4 photosynthesis within individual photosynthetic cells; i.e. without the dual-cell Kranz type anatomy which was previously thought to be required. I am a member of a consortium of scientists whose goal is exploring the potential for genetic engineering of rice, a C3 crop, to perform C4 photosynthesis.

Representative Publications:

  • King, J, GE Edwards, AB Cousins 2012 The efficiency of the CO2 concentrating mechanism during single-cell C4 metabolism. Plant Cell Environment 35: 513-523.
  • Voznesenskaya E.V., Koteyeva N.K., Roalson E.H. & Edwards G.E. 2012 Evolution of C4 photosynthesis in section Coccosalsola of the Salsoleae (Chenopodiaceae). In Caryophyllales: New insights into the phylogeny, systematics and morphological evolution of the Order (eds A.K. Timonin, A.P. Sukhorukov, G.H. Harper & M.V. Nilova), pp. 44-47. Moscow M.V. Lomonosov State University, Moscow, Russia.
  • Kirchhoff, H, RM Sharpe, M Herbstova, R Yarbrough, GE Edwards 2013 Differential mobility of pigment-protein complexes in granal and agranal thylakoid membranes of C3 and C4 plants. Plant Physiology 161:497-507.
  • Voznesenskaya, EV, NK Koteyeva, H Akhani, EH Roalson, GE Edwards. 2013 Structural and physiological analyses in Salsoleae (Chenopodiaceae) indicate multiple transitions among C3, intermediate and C4 photosynthesis. Journal of Experimental Botany 64:3583-3604.
  • Giuliani, R, N Koteyeva, E Voznesenskaya, MA Evans, AB Cousins, and GE Edwards. 2013 Coordination of leaf photosynthesis, transpiration and structural traits in rice and wild relatives (genus Oryza). Plant Physiology. 162: 1632-1651
  • Ocampo, G, NK Koteyeva, EV Voznesenskaya, GE Edwards, TL Sage, RF Sage, and JT Columbus. 2013 Evolution of leaf anatomy and photosynthetic pathways in Portulacaceae. American Journal of Botany. 100: 2388-2402.
  • Stutz, SS, GE Edwards, AB Cousins 2014 Single cell C4 photosynthesis: efficiency and acclimation of Bienertia sinuspersici to growth under low light. New Phytologist. 202: 220-232.
  • Koteyeva NK, EV Voznesenskaya, AB Cousins, and GE Edwards. 2014 Differentiation of C4 photosynthesis along a leaf developmental gradient in two Cleome species having different forms of Kranz anatomy. Journal of Experimental Botany. 65:3525-3541.
  • Rosnow J, GE Edwards, EH Roalson. Positive selection of Kranz and nonKranz C4 phosphoenolpyruvate carboxylase amino acids in Suaedoideae (Chenopodiaceae). 2014 Journal of Experimental Botany. 65:3595-3607. doi:10.1093/jxb/eru053
  • Rosnow, J, PK Yerramsetty, JO Berry, TW Okita, GE Edwards. 2014 Exploring mechanisms linked to differentiation and function of dimorphic chloroplasts in the single cell C4 species Bienertia sinuspersici. BMC Plant Biology 14:34, doi:10.1186/1471-2229-14-34