Promoted by cytokinins, but inhibited by abscisic acid, these structures are opened and closed by changes in turgor pressure, and each of them are flanked by a pair of guard cells.
In flp mutants, a continuation of divisions results in these structures having extra cells, and in too many mouths mutants, extra of these structures are produced. More prevalent on the abaxial surface, these structures are affected by a proton gradient that drives the accumulation of potassium ions. The diacytic type of these structures is found in some dicots, and their structure is similar to hydathodes, which are responsible for guttation. Promoted by cytokinins, but inhibited by abscisic acid, these structures are opened and closed by changes in turgor pressure, and each of them are flanked by a pair of guard cells. FTP name these pores in the epidermis of leaves where transpiration and gas exchange occurs.
In flp mutants, a continuation of divisions results in these structures having extra cells, and in too many mouths mutants, extra of these structures are produced.
{stomata} [accept {stoma}; or {stomate}; or {stomatal apparatus}es]