guard cells


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guard cells

one of a pair of specialized epidermal cells forming a pore (stoma) at the leaf surface. See STOMA for a description of how the stomatal aperture is regulated.
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endoplasmic reticulum (ER) and a rough Guard cells .
The number of stomata per unit area was 4, all the stomata were open and no closed stomata were present, the average length of guard cells was 27.
In hot, dry conditions, the guard cells become progressively more restrictive in their opening to protect the leaf from losing too much water vapor and thus jeopardizing the chloroplasts' survival.
The structure of the stomata and their subsidiary cells in the studied species is the same as that described by Greguss (1968) and Acuna-Catillo & Marin-Mendez (2012) for other species of the genus: sunken guard cells and raised subsidiary cells that form the walls of the epistomatic chamber.
In order to keep more details in the changed scene, our proposed methods are based on the incorporation of guard cells (GC) only in the range direction.
III depicts the healthy as well as damaged epidermal and guard cells of Bougainvillea spectabilis at control and polluted zones, respectively.
SEM was used to describe the shape of epidermal cells as well as stomata (shape of guard cells, number, location and form of subsidiary cells, and stomata arrangement in the epidermis).
The two guard cells, together with the pore, which they form between them, are called a stoma (pl.
Stomatal opening increases the volume of guard cells as a result of increase in the water content and this may be due to the difference in the water potential (o w) between guard cells and adjacent cells as reported by Priyadarshan and Naidu (Priyadarsan, V.