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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The two guard cells surround the central pore through which water is lost by plants.
The mean lengths ([micro]m) of guard cells at the upper epidermis were 1.51 [+ or -] 0.92, 1.72 [+ or -] 0.15 and 1.62 [+ or -] 0.84 at Oluku, Agbor and sapele roads respectively while at the lower epidermis, the guard cell lengths were 1.85 [+ or -] 0.40, 1.12 [+ or -] 0.64 and 1.71 [+ or -] 0.46, respectively.
endoplasmic reticulum (ER) and a rough Guard cells ...
The guard cells length on both surfaces was 22.3 [+ or -] 1.2 [micro]m; the guard cells density on the adaxial surface was 345.7 [+ or -] 0.7 mm .
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 27.5 (25-30) um and average width of guard cells was 6 (5-7) um.
The guard cells regulate the opening of the stomates, and the guard cells are controlled by the water potential of the leaf.
We show that the use of the CMLD may enhance the detection performance and particularly if we add guard cells in the range direction.