These authors contributed equally to this work.
Evaluation of diel patterns of relative changes in cell turgor of tomato plants using leaf patch clamp pressure probes
Version of Record online: 21 MAY 2012
Copyright © Physiologia Plantarum 2012
Volume 146, Issue 4, pages 439–447, December 2012
How to Cite
Lee, K. M., Driever, S. M., Heuvelink, E., Rüger, S., Zimmermann, U., de Gelder, A. and Marcelis, L. F. M. (2012), Evaluation of diel patterns of relative changes in cell turgor of tomato plants using leaf patch clamp pressure probes. Physiologia Plantarum, 146: 439–447. doi: 10.1111/j.1399-3054.2012.01637.x
- Issue online: 8 NOV 2012
- Version of Record online: 21 MAY 2012
- Accepted manuscript online: 27 APR 2012 12:15PM EST
- Received 29 December 2011; revised 29 February 2012
Relative changes in cell turgor of leaves of well-watered tomato plants were evaluated using the leaf patch clamp pressure probe (LPCP) under dynamic greenhouse climate conditions. LPCP changes, a measure for relative changes in cell turgor, were monitored at three different heights of transpiring and non-transpiring leaves of tomato plants on sunny and cloudy days simultaneously with whole plant water uptake. Clear diel patterns were observed for relative changes of cell turgor of both transpiring and non-transpiring leaves, which were stronger on sunny days than on cloudy days. A clear effect of canopy height was also observed. Non-transpiring leaves showed relative changes in cell turgor that closely followed plant water uptake throughout the day. However, in the afternoon the relative changes of cell turgor of the transpiring leaves displayed a delayed response in comparison to plant water uptake. Subsequent recovery of cell turgor loss of transpiring leaves during the following night appeared insufficient, as the pre-dawn turgescent state similar to the previous night was not attained.