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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367 Table IV: Values of 't' test between size of guard cells of Bougainvillea spectabilis leaves of polluted and control sites.
of stomata will reduce then the guard cell size will increase at same surface.
After microscopically examining 70 different specimens of Agave and Yucca, it is apparent that the stoma and guard cell patterning of these two desert succulent genera are distinct.
ABA is synthesized following turgor deficiency and stimulates NO synthesis in stomata guard cells.
and CI channels in guard cells through a subset of abscisic acid-evoked signaling pathways.
In addition, the guard cells of most plants contain rudimentary chloroplasts, which also absorb light.
The researchers found that adding extra copies of the genes to the guard cells actually improved water efficiency.
The guard cells respond to CO2 more vigorously," said Honghong Hu, a post doctoral researcher in Schroeder's lab and co-first author of the report.
regions; short terminal cells overarching guard cells.
that of the guard cells measured by Pant and Nautiyal (1963) in Dioon
The guard cells are superficial with a well-developed and constant rim and sunken aperture [ILLUSTRATION FOR FIGURE 2F,G OMITTED].
Hence, the chloroplast numbers of mature guard cells may, to some degree, be representative of meristematic [G.