More information: Shouguang Huang et al, Guard cells count the number of unitary cytosolic Ca 2+ signals to regulate stomatal dynamics, Current Biology (2024). DOI: 10.1016/j.cub.2024.07.086 ...

In plants, guard cells control the stomatal opening by expanding and contracting through ion flux. When a plant senses light, a signal is sent to the guard cell to increase its ion content, which ...

Gas exchange between the plant and the atmosphere takes place through the stomata, which consist in two bean-shaped guard cells surrounding a pore. (a) Malate and Cl − efflux from the guard ...