Turgornyomáshoz

Turgornyomáshoz is a Hungarian term that translates to "turgor pressure" in English. Turgor pressure is a crucial concept in plant biology and relates to the internal pressure exerted by the cell contents against the cell wall. This pressure arises from the movement of water into the plant cell through osmosis. When a plant cell is in a hypotonic environment, meaning the concentration of solutes outside the cell is lower than inside, water will move into the cell. This influx of water causes the vacuole, a large, fluid-filled sac within the plant cell, to expand and push the cytoplasm and cell membrane against the rigid cell wall.

The cell wall, being strong and relatively inelastic, prevents the cell from bursting. Instead, it resists this outward pressure, creating turgor pressure. This pressure is essential for maintaining the rigidity and shape of plant tissues. It provides structural support, allowing plants to stand upright and hold their leaves and flowers. Wilting, a common phenomenon in plants, occurs when turgor pressure is lost due to insufficient water. Conversely, when a plant is well-watered, its cells are turgid, and the plant appears firm and healthy. Turgor pressure also plays a role in various plant movements, such as the opening and closing of stomata, which regulate gas exchange, and the bending of plant parts in response to stimuli.