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Published on: October 22, 2018
Distribution of growth and proton efflux in gravireactive roots of maize (Zea mays L.)
1Institute of Plant Biology and Physiology of the University, Biology Building, CH-1015, Lausanne, Switzerland.
Abstract:
Roots of Zea mays were maintained in a vertical orhorizontal position and the local elongation rate and H(+) fluxes were measured using Sephadex beads containing a pH indicator. When the roots were kept horizontally, the growth of the lower side was strongly inhibited and that of the upper side slightly stimulated as compared with vertical roots. The H(+) extrusion, which was greatest in the elongation zone, was strongly inhibited on the lower side and slightly stimulated on the upper side as compared with vertical roots.
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