Guard cells

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(Bot.) the bordering cells of stomates; they are crescent-shaped and contain chlorophyll.

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In her first body paragraph, Bridget focused on each of the two cells in turn: firstly root hair cells and then guard cells.
In all treatments, in an environment with natural light, the stomata have guard cells with external periclinal walls that present a rather sharp thickening, forming a crest around the external atrium, and underdeveloped substomatic chambers (Figures 3A, E, 4A, C, D).
A variety of characters like epidermal cells, subsidiary cells, guard cells, trichomes, macro-hairs, micro-hairs and stomata were used as a tool for the taxonomic grouping of different species.
Other than affecting the bulliform cells, water deficit also causes the guard cells to lose their turgor pressure [66], thus leading to stomatal closure [67].
The accumulation and release of potassium by stomata guard cells lead to changes in their turgid, resulting in stomata opening and closing (Fletcher et al.
A rare abnormality in some grasses can result in axial GMC division, so that the resulting two (non-functional) guard cells are proximal-distal to each other (Stebbins & Shah, 1960), suggesting that a stabilized mutation could be responsible for the evolution of short-cell pairs.
The guard cells regulate the opening of the stomates, and the guard cells are controlled by the water potential of the leaf.
The stomata are sunken and syndetocheilic, in which the subsidiary cells surround guard cells and are above them.
We show that the use of the CMLD may enhance the detection performance and particularly if we add guard cells in the range direction.
In addition, guard cells surround the stomata, which are the small holes on the undersides of leaves that allow carbon dioxide to enter and oxygen to be released.
These changes typically include guard cells closing on leaves to reduce water loss, cessation of plant growth to reduce water consumption and myriad other stress-relieving responses.
Cell size measurement: Size (Length & breadth) of epidermal cells and guard cells were measured with ocular micrometer under high power magnifications with the help of "stage-ocular micro-metery" and "Motic Images plus 2.