Figure 2.

Short-term (180-min) time course of Al accumulation within subcellular fractions (nonexchangeable cell wall [A], total protoplasm [B], and avacuolate-protoplasm and vacuoles [C]) of single cells of C. corallina as measured by ²⁶Al-AMS. Single cells were mounted in each of 15, three-compartment chambers, with the center compartment containing 110 mL of 50 μm AlCl₃ in 0.4 mm CaCl₂ spiked with 75 pCi of ²⁶Al (pH 4.3). Following the uptake period, isolated cell walls were desorbed for 30 min in 1.0 mm citric acid to estimate nonexchangeable Al (pH 4.3; 4°C). Values represent the means ± se of three replicates. Note difference in axes scales in A (mg m⁻²) compared to B and C (μg m⁻²).