SCIPRESS FORMA
Forma, Vol. 7 (No. 1), pp. 19-25, 1992
Letter

The Role of Water Pumping System in the Regulation of Plant Growth under Osmotic Stress

Kiyoshi Katou1, Yoshihisa Enomoto2 and Muneyoshi Furumoto3

1Biological Institute, Faculty of Science, Nagoya University, Nagoya 464-01, Japan
2Department of Physics, Faculty of Science, Nagoya University, Nagoya 464-01, Japan
3Department of Earth Science, Faculty of Science, Nagoya University, Nagoya 464-01, Japan

(Received April 25, 1991; Accepted November 1, 1991)

Keywords: Apoplast Canal Model, Higher Plants, Osmotic Adaptation, Water Pump

Abstract. Adaptive recovery of plant stem elongation under osmotic stress depends on energy metabolism. The recovery begins without changing the water potential of elongating cells, which suggests the participation of metabolism-dependent water uptake during this recovery. Thus a computer simulation of this recovery by application of the canal model was performed resulting in success. The extended canal equations was adopted in the present study to describe time-dependent changes in the transport because the recovery is transient in nature.