Evaluation of diel patterns of relative changes in cell turgor of tomato plants using leaf patch clamp pressure probes

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 a...

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Bibliographic Details
Published in:Physiologia plantarum 2012-12, Vol.146 (4), p.439-447
Main Authors: Lee, Kang M., Driever, Steven M., Heuvelink, Ep, Rüger, Simon, Zimmermann, Ulrich, de Gelder, Arie, Marcelis, Leo F. M.
Format: Article
Language:English
Subjects:
Agricultural production
Biological and medical sciences
Biological Transport
Biomechanical Phenomena
dynamic changes
Fundamental and applied biological sciences. Psychology
growth
hydraulic conductance
irrigation
Leaves
Lycopersicon esculentum - physiology
Lycopersicon esculentum - radiation effects
Patch-Clamp Techniques - instrumentation
Patch-Clamp Techniques - methods
Plant Cells - physiology
Plant Leaves - physiology
Plant Leaves - radiation effects
Plant physiology and development
Plant Transpiration
Pressure
Soils
stomatal conductance
stress
Sunlight
Temperature
tree
vulnerability
Water - physiology
water status
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Summary: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.
ISSN:0031-9317
1399-3054
DOI:10.1111/j.1399-3054.2012.01637.x