Table I.

Comparison of the Al³⁺-activated inward current in the ES8 and ET8 genotypes

Genotype	Occurrence Rate	Delay	Im	Erev
	%	min	mA m−2	mV
ET8	39 (109)	9.1 ± 1.0 (43)	−68.8 ± 7.6 (43)	35.4 ± 3.9 (43)
ES8	11 (44)	36.0 ± 6.8 (5)	−27.5 ± 5.7 (5)	24.2 ± 9.1 (5)

Occurrence rate is the percentage of total cells measured in which Al³⁺ activated an inward current. Delay refers to the average time elapsed between the addition of Al³⁺ and the activation of an inward current. Current density (I_m) refers to the maximum current after Al³⁺ addition measured at −180 mV. The reversal potential for the Al³⁺-activated inward current is also shown (E_rev). The values are the mean and sem with the no. of protoplasts examined in the brackets.