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THE PRESSURE PROBE: A Versatile Tool in Plant Cell Physiology
A. Deri Tomos1, Roger A. Leigh
1Ysgol Gwyddorau Biolegol, Prifysgol Cymru Bangor, Bangor, Gwynedd LL57 2UW, United Kingdom; e-mail: a.d.tomos@bangor.ac.uk, Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EA, United Kingdom;
Annual Review of Plant Physiology and Plant Molecular Biology
|March 12, 2004
Summary
The pressure probe now analyzes single plant cells, linking water relations and metabolism. This advancement allows detailed mapping of cellular water, solutes, and enzyme activities in living plants.
Area of Science:
- Plant Physiology
- Biochemistry
- Analytical Chemistry
Background:
- The pressure probe is a key instrument in plant physiology for measuring cell turgor and water relations.
- Traditionally, water relations and metabolism studies in plants were conducted separately.
- In situ analysis of individual plant cells was limited.
Purpose of the Study:
- To review the evolution of the pressure probe and its application in single-cell analysis.
- To highlight the integration of water relations and metabolic studies at the cellular level.
- To discuss the potential and limitations of the pressure probe in plant science.
Main Methods:
- Evolutionary review of the pressure probe's development.
- Modification of the probe for root pressure and xylem tension measurements.
- Integration with microanalytical techniques for in situ cellular content sampling.
Main Results:
- The pressure probe now enables in situ sampling and analysis of individual higher plant cell contents.
- Quantitative mapping of water and solute relations at single-cell resolution is now possible.
- The probe facilitates the measurement of turgor, hydraulic conductivity, and enzyme activities in single cells.
Conclusions:
- The pressure probe has evolved into a powerful tool for linking plant water relations and metabolism.
- Single-cell analysis using the pressure probe offers unprecedented resolution in plant physiological studies.
- Further developments promise expanded applications in understanding plant cell function and metabolism.