Dr. Gerald Schönknecht

Assistant Professor of Botany

Oklahoma State University, Dept. of Botany
104 Life Sciences East, Stillwater, OK 74078-3013, USA
Tel.: +1 (405) 744 5549, Fax.: +1 (405) 744 7074
E-mail: schoenk@okstate.edu

TEACHING:

RESEARCH:

Plant Physiology, BOT 3463, every spring. Prerequisite: BOT 1404 (Plant Biology).

Plant Physiology Lab, BOT 3460, every spring. Prerequisite: Plant Physiology (BOT 3463) or concurrent enrollment.

Plant Mineral Nutrition, BOT 5423, fall of odd numbered years. Prerequisite: Plant Physiology (BOT 3463).

You need a login and password to access the web pages of my Plant Physiology classes. I'm happy to send you an e-mail with login and password, if you want to have a look. (Due to changes in the policy of the IT support of the College of Arts and Sciences I had to remove the Plant Mineral Nutrition Web pages from the server.)

My group studies ion uptake and intracellular ion transport in higher plants. Our goal is to understand the molecular mechanisms of ion transport into (and out of) the large central vacuole. For this a combination of reverse genetic, biophysical (patch-clamp electrophysiology), and physiological approaches is applied.

PUBLICATIONS:

Mechanism of luminal Ca²⁺ and Mg²⁺ action on the vacuolar slowly activating channels
Pottosin, I.I., Martínez-Estévez, M., Dobrovinskaya, O.R. Muñiz, J. and Schönknecht, G. (2004) Planta in press .

KCO1 is a component of the slow-vacuolar (SV) ion channel
Schönknecht, G., Spoormaker, P., Steinmeyer, R., Brüggemann, L., Ache, P., Dutta, R., Reintanz, B., Godde, M., Hedrich, R. and Palme, K. (2002) FEBS Letters 511 (1-3): 28-32.
[Full-Text PDF]

Cl^- channel inhibitors of the arylaminobenzoate type act as photosystem II herbicides: A functional and structural study
Bock, A., Krieger-Liszkay, A., Beitia Ortiz de Zarate, I. and Schönknecht, G. (2001) Biochemistry 40: 3273-3281.
[Abstract] [Full-Text PDF]

Slow vacuolar channels from barley mesophyll cells are regulated by 14-3-3 proteins.
van den Wijngaarda, P.W.J., Bunneya, T.D., Roobeeka, I., Schönknecht, G. and de Boer, A.H. (2001) FEBS Lett. 488 (1-2): 100-104.
[Abstract] [Full-Text PDF]

Ion channels meet plant hormones.
Hedrich, R., Becker, D., Dietrich, P. and Schönknecht, G. (2000) in: Plant Hormone Research. K. Palme and D. Schell eds. (Springer, Austria) Chapter 12.

A simple method to isolate protoplasts and vacuoles for patch-clamp experiments.
Trebacz, K. and Schönknecht, G. (2000) Protoplasma 213 (1-2): 39-45.
[Abstract]

Cytoplasmic magnesium regulates the fast activating vacuolar cation channel.
Brüggemann, L.I., Pottosin, I.I. and Schönknecht, G. (1999) J. Exp. Bot. 50 (339): 1547-1552.
[Abstract] [Full-Text PDF]

Different xanthines cause membrane potential oscillations in a unicellular green alga pointing to a ryanodine / cADPR receptor Ca²⁺ channel.
Bauer, C.S., Simonis, W. and Schönknecht, G. (1999) Plant Cell Physiol. 40 (4): 453-456.
[Abstract]

Selectivity of the fast activating vacuolar cation channel.
Brüggemann, L.I., Pottosin, I.I. and Schönknecht, G. (1999) J. Exp. Bot. 50 (335): 873-876.
[Abstract]  [Full-Text PDF]

A steep Ca²⁺-dependence of a K⁺ channel in a unicellular green alga.
Bauer, C.S., Plieth, C., Hansen, U.-P., Simonis, W. and Schönknecht,G. (1998) J. Exp. Bot. 49 (327): 1761-1765.
[Abstract]  [Full-Text PDF]

Cytoplasmic polyamines block the fast activating vacuolar cation channel.
Brüggemann, L.I., Pottosin, I.I. and Schönknecht, G. (1998) Plant J. 16 (1): 101-105.
[Abstract]  [Full-Text PDF]

Cytosolic Ca²⁺ and H⁺ buffers in green algae: a comment.
Schönknecht, G. and Bethmann, B. (1998) Protoplasma 203: 206-209.
[Abstract]

Light-induced changes of cytosolic pH in Eremosphaera viridis: recordings and kinetic analysis.
Bethmann, B., Simonis, W. and Schönknecht, G. (1998) J. Exp. Bot. 49 (324): 1129-1137.
[Abstract]  [Full-Text PDF]

Strontium-induced repetitive calcium spikes in a unicellular green alga.
Bauer, C.S., Plieth, C., Bethmann, B., Popescu, O., Hansen, U.-P., Simonis, W. and Schönknecht, G. (1998) Plant Physiol. 117 (2): 545-557.
[Abstract]  [Full-Text PDF]

Light-dependent signal transduction and transient changes in cytosolic Ca²⁺ in a unicellular green alga. (Review)
Schönknecht, G., Bauer, C.S. and Simonis, W. (1998) J. Exp. Bot. 49 (318): 1-11.
[Abstract]  [Full-Text PDF]

Complete publication list here