Comparison of calcium and lanthanon Ions in the Avena-coleoptile growth test.
Inhibition of elongation of oat coleoptile sections by La(3+), Pr(3+), and Nd(3+) is similar to but greater than that by Ca(2+) at low and intermediate concentrations. The lanthanons might serve as probes to learn more about the manner of action of Ca(2+), a normal growth-regulating agent.
Center for the Biology of Natural Systems, Washington University, Saint Louis, Missouri.
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Pickard