Table II.
Frequency of occurrence of anion currents in protoplasts isolated from maize stelar parenchyma cells and the mean current densities, averaged from all protoplasts
Current densities were measured at −120 mV in the plasma membrane of protoplasts suspended in 20 mm CaCl2 (solution ESB), with the patch clamp pipette containing 50 mm TEA-Cl and a [Ca2+]cyt of 100 nm (solution ISC). Means provided with SEM, n = 15.
Frequency of Occurrence | Idensity at −120 mV | |
---|---|---|
nAm−2 | ||
Zm-X-QUAC | 5/15 (33%) | −107 ± 39 |
Zm-X-IRAC | 2/15 (13%) | −0.71 ± 0.51 |
No current | 9/15 (60%) |