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pressure potential

pressure potential Symbol Ψp. The component of water potential due to the hydrostatic pressure that is exerted on water in a cell. In turgid plant cells it usually has a positive value as the entry of water causes the protoplast to push against the cell wall (see turgor). In xylem cells there is a negative pressure potential, or tension, as a result of transpiration. Water at atmospheric pressure has a pressure potential of zero.

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pressure potential

pressure potential The hydrostatic pressure to which water in a liquid phase is subjected. It was formerly known as wall pressure or turgor pressure. In a turgid plant cell, pressure potential is usually positive but the pressure potential of xylem in a transpiring plant, which is under considerable tension, will be negative.

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"pressure potential." A Dictionary of Ecology. . Encyclopedia.com. 22 Sep. 2018 <http://www.encyclopedia.com>.

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pressure potential

pressure potential The hydrostatic pressure to which water in a liquid phase is subjected. It was known formerly as wall pressure or turgor pressure. In a turgid plant cell, pressure potential is usually positive but the pressure potential of xylem in a transpiring plant, which is under considerable tension, will be negative.

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"pressure potential." A Dictionary of Plant Sciences. . Encyclopedia.com. 22 Sep. 2018 <http://www.encyclopedia.com>.

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"pressure potential." A Dictionary of Plant Sciences. . Retrieved September 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/pressure-potential-0

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