guard cell


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guard cell

[′gärd ‚sel]
(botany)
Either of two specialized cells surrounding each stoma in the epidermis of plants; functions in regulating stoma size.
References in periodicals archive ?
III depicts the healthy as well as damaged epidermal and guard cells of Bougainvillea spectabilis at control and polluted zones, respectively.
3C, 3D, 4A, 4C, 4D), with two large guard cells surrounding the stoma on either side (Figs.
Nitric oxide and abscisic acid cross talk in guard cells. Plant Physiology 128: 790-792.
Abscisic acid introduced into transpiration stream accumulates in the guard cell apoplast and causes stomatal closure.
Carbonic anhydrases are upstream regulators of CO[sub.2]-controlled stomatal movements in guard cells. Nat Cell Biol 2010.
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.
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].