Dr. Gerald Schoenknecht, Professor
Mailing Address: Oklahoma State University
Dept. of Plant Biology, Ecology, and Evolution
301 Physical Sciences, Stillwater, OK 74078-3013, USA
Telephone: +1 (405) 744 5549

My group studies the physiology and evolution of plant membrane transport proteins. Ongoing research projects are:
- Annotation and analysis of the genome of the thermoacidophilic red alga Galdieria sulphuraria. The analysis of the Galdieria genome has been published in Science.
- The molecular mechanisms of volatage-dependent gating of the vacuolar cation channel TPC1 (see here for a recent publication).
- Recording and modelling of pH homeostasis in plant root cells.
Plant Physiology, BOT 3463, every spring and fall (in fall only as online course). Prerequisite: BOT 1404 (Plant Biology).
Plant Physiology Lab, BOT 3462, every spring. Prerequisite: Plant Physiology (BOT 3463) or concurrent enrollment.
Plant Mineral Nutrition, BOT 5423/4423, fall of odd numbered years. Prerequisite: Plant Physiology (BOT 3463).
Biostatistics, BOT 5110/4990, fall of even numbered years.

Recent Publications
Gating of the two-pore cation channel AtTPC1 in the plant vacuole is based on a single voltage-sensing domain
Jaslan, D., Mueller, T.D., Becker, D., Schultz, J., Cuin, T., Marten, I., Dreyer, I., Schönknecht, G. (communicating author) and Hedrich, R. (2016) Plant Biology 18: 750-760. [Full-text PDF] (Recommended by F1000Prime and covered by EurekAlert)
Gene transfers shaped the evolution of de novo NAD+ biosynthesis in eukaryotes
Ternes, C. M. and Schönknecht, G. (2014) Genome Biology and Evolution 6(9): 2335-2349. [Full-text PDF]
Horizontal gene acquisitions by eukaryotes as drivers of adaptive evolution
Schönknecht, G., Weber, A. P.M. and Lercher, M. J. (2014) BioEssay 36(1): 9-20. [Full-text PDF]
Calcium signals from the vacuole
Schönknecht, G. (2013) Plants 2(4): 589-614. [Full-text PDF]
Gene transfer from bacteria and archaea facilitated evolution of an extremophilic eukaryote Schönknecht, G., Chen, W.-H., Ternes, C. M., Barbier, G. G., Shrestha, R. P., Stanke, M., Bräutigam, A., Baker, B. J., Banfield, J. F., Garavito, R. M., Carr, K., Wilkerson, C., Gagneul, D., Dickenson, N. E., Oesterhelt, C., Lercher, M. J. and Weber, A. P.M. (2013) Science 339: 1207-1210. [Full-Text PDF]
Luminal and cytosolic pH feedback on proton pump activity and ATP affinity of the V-type ATPase from Arabidopsis Rienmüller, F., Dreyer, I., Schönknecht, G., Schulz, A., Schumacher, K., Nagy, R., Martinoia, E., Marten, I. and Hedrich, R. (2012) Journal of Biological Chemistry 287 : 8986-8993. [Full-Text PDF]
A novel calcium-binding site in the slow vacuolar cation channel TPC1 senses luminal calcium levels
Dadacz-Narloch, B., Beyhl, D., Larisch, C., López-Sanjurjo, E.J., Reski, R., Kuchitsu, K., Müller, T.D., Becker, D., Schönknecht, G. (communicating author) and Hedrich, R. (2011) The Plant Cell 23: 2696-2707. [Full-Text PDF]
pH regulation in an acidophilic green alga - a quantitative analysis
Bethmann, B. and Schönknecht, G. (2009) New Phytologist 183(2): 327-339. [Full-Text PDF]
Plasmodesmata transport of GFP alone or fused to Potato virus X TGBp1 is diffusion driven
Schönknecht, G., Brown, J.E. and Verchot-Lubicz, J. (2008) Protoplasma 232 (3): 143-152. [Full-Text PDF]
Vacuolar ion channels in the liverwort Conocephalum conicum
Schönknecht, G. and Trebacz, K. (2008) Plant Signaling & Behavior 3 (6): 404-405. [Full-Text PDF]
Characteristics of anion channels in the tonoplast of the liverwort Conocephalum conicum
Trebacz, K., Schönknecht, G., Dziubinska, H. and Hanaka, A. (2007) Plant Cell Physiol. 48 (12): 1747-1757. [Full-Text PDF]
Vacuolar calcium channels
Pottosin, I.I. and Schönknecht, G. (2007) J. Exp. Bot. 58 (7): 1559-1569. [Full-Text PDF]
Modelling Ca2+ oscillations in plants
Schönknecht, G. and Bauer, C. (2007) In: Rhythms in Plants: Phenomenology, Mechanisms, and Adaptive Significance. S. Mancuso and S. Shabala, eds. ( Wien, New York: Springer), Chapter 14, pp. 295-311. [Full-Text PDF]