1. Imamura, S., Untersuchungen über den Mechanismus der Turgorschwankung der Spaltoffnungs-Schliesszellen, Jpn. J. Bot., 1943, vol. 12, p. 251.
2. Hsiao, T.C., Stomatal ion transport, in Encyclopedia of Plant Physiology, Vol. 2: Transport in Plants, Part B: Tissues and Organs, Lüttge, U. and Pitman, M.G., Eds., New York: Springer-Verlag, 1976.
3. Talbott, L.D. and Zeiger, E., Central roles for potassium and sucrose in guard-cell osmoregulation, Plant Physiol., 1996, vol. 111, p. 1051.
4. Travis, A.J. and Mansfield, T.A., Studies of malate formation in isolated guard cells, New Phytol., 1977, vol. 78, p. 541.
5. Bowling, D.J.F., Measurement of the apoplastic activity of K+ and Cl− in the leaf epidermis of Commelina communis in relation to stomatal activity, J. Exp. Bot., 1987, vol. 38, p. 1351.