Difference between turgor pressure and pressure potential.
Difference between turgor pressure and pressure potential.
Plant cells are very much like your own cells, except they are surrounded by a cell wall. This cell wall is part of what gives plants such a rigid and sturdy structure. Plant cells need a certain amount of pressure to make sure that the cell wall stays rigid. Pressure from fluid within the cell pushing against the cell wall is called turgor pressure.
Presure ptential Symbol Ψ is 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. 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.
Plant cells are very much like your own cells, except they are surrounded by a cell wall. This cell wall is part of what gives plants such a rigid and sturdy structure. Plant cells need a certain amount of pressure to make sure that the cell wall stays rigid. Pressure from fluid within the cell pushing against the cell wall is called turgor pressure.
Presure ptential Symbol Ψ is 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. 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.
