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Table 12 Calculation of the E_H+–constant for the empirical formula E_H+ = E_m/(log₁₀ 1/a_H+ ∙ μm) = 0.157 ± 0.009, where E_m (mV) is the membrane potential in the perenchymal coleoptile cells of Zea mays L. (Additional file 1: SI Table 1) and H⁺-activity is taken from Additional file 1: SI Table 2

From: A quantitative report on the impact of chloride on the kinetic coefficients of auxin-induced growth: a numerical contribution to the “acid growth hypothesis”

Treatment	E_m (mV)
Treatment	A (0 min)	B (3 min)	C (6 min)	D (10 min)	E (20 min)	F (30 min)	Mean
1 mM KCl + IAA	−0.199	−0.200	−0.192	−0.194	−0.208	−0.217	−0.202 ± 0.009
10 mM KCl	−0.182	−0.177	−0.175	−0.175	−0.176	−0.175	−0.177 ± 0.003
10 mM KCl + IAA	−0.109 ± 0.011	−0.110 ± 0.011	−0.108 ± 0.011	−0.111 ± 0.009	−0.116 ± 0.010	−0.118 ± 0.011	−0.112 ± 0.004
10 mM KCl + IAA + A-9-C	−0.144 ± 0.009	−0.135 ± 0.009	−0.138 ± 0.008	−0.141 ± 0.010	−0.140 ± 0.007	−0.138 ± 0.008	−0.139 ± 0.003
Mean	−0.158	−0.155	−0.153	−0.155	−0.160	−0.162	−0.157 ± 0.009

Errors calculated using the total derivative and standard deviation methods

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