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. 2014 Oct 6;114(7):1517–1533. doi: 10.1093/aob/mcu187

Fig. 4.

Fig. 4.

Measurement of turgor with mechanical methods. (A) Pressure probe, wherein the pressure is measured directly using a capillary. (B) Ball tonometry, wherein the surface of contact between the sphere and the cell is determined optically. (C) Indentation methods, wherein a force–depth curve is interpreted to yield the pressure.