turgor pressure


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turgor pressure

n
(Botany) the pressure exerted on a plant cell wall by water passing into the cell by osmosis. Also called: hydrostatic pressure
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References in periodicals archive ?
This capacity of water conservation in the aerial part is related to the low hydraulic conductivity in the plant that reduces the turgor pressure of the cells and promotes stomata closure.
Bose's identification of a fundamental physiological motif linking measured pulsations in cellular electric potentials with oscillations in cell turgor pressure, cellular contractility and growth, led him to postulate that plants and animals share essentially similar fundamental physiological mechanisms.
The release of ions reduces the turgor pressure of the guard cells, in effect deflating them and closing the stomatal pore (fig.
Potassiums influence on cell turgor pressure and water relations in the plant helps the plants resist the effects of drought and temperature extremes, and aids resistance to many plant diseases and environmental stresses.
The bacterial cell envelope (CE) (cell wall (CW) and cell membrane (CM)) is responsible for maintaining shape and turgor pressure, is involved in cell division, energy production, regulating permeability of substances in and out of the cell, and is involved in infection and pathogenicity [7].
Nonetheless, the greater the water loss under low humidity, the lower the turgor pressure, and decreased turgor affects the mechanical properties [4, 12].
It has a role in the leaf expansion and stem length by maintaining turgor pressure. It increases sun light absorption rate to maximize growth which accelerates canopy formation (Alias etal., 2009; Ebrahimet al., 2011).
Due to drought stress, plants that are exposed to osmotic stress accumulate substances known as osmolites that provide continuation of the turgor pressure. Osmotic protectors accumulate in the cytoplasm and large organelles and are virtually absent in the vacuole.
The increase in Na+ concentration may be due to fact that quinoa plants accumulate Na+ which is readily available for cytosolic osmotic adjustment and sustaining turgor pressure, so to manage a suitable K+: Na+ concentration in leaves, the increased Na+ uptake should be followed by enhanced K+ transport from root to shoot (Cuin et al., 2009).
The higher mass of fruits harvested in bell pepper plants irrigated at -6 kPa (Figure 6A) possibly results from the growth of the pericarp due to the availability of water, which increases the turgor pressure of the cell (Lacerda et al., 2007), leading to a greater cell volume and, consequently, greater fruit mass.