the vacuolar potential of guard cells of commelina communis l. , zea mays l. , nicotiana glauca graham , allium cepa l. , and vicia faba l. was between -40 and -50 millivolt in 30 millimolar kcl when stomata were open and about -30 millivolt when stomata were closed .
C0007634
the
C0042219
vacuolar