Summary
Abscisic acid (ABA) moves basipetally and laterally in maize (Zea mays L.) root segments placed horizontally; its transport properties are thus similar to those of the growth-inhibiting substances produced by the root cap. The two opposite flows af ABA and of indolyl-3-acetic acid (IAA) — substances both present in the cap — may control elongation and georeaction of the root.
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Pilet, P.E. Abscisic acid as a root growth inhibitor: Physiological analyses. Planta 122, 299–302 (1975). https://doi.org/10.1007/BF00385279
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DOI: https://doi.org/10.1007/BF00385279