Pressure potential is a component of water potential in plants, representing the physical pressure exerted by water within plant cells. It is crucial for maintaining turgor pressure, which helps keep cells firm and supports the overall structure of the plant. When water enters a cell, it creates internal pressure against the cell wall, contributing to the plant's rigidity. In the context of plant physiology, pressure potential can be influenced by factors such as water availability and soil conditions. A higher pressure potential indicates that a plant cell is well-hydrated, while a lower pressure potential may suggest water stress, affecting the plant's growth and health.