Abstract

Evidence supporting the view that there is an inverse relationship between the hydroxyproline-protein level in the cell wall and the ability of a cell to undergo rapid cell elongation was obtained. A growth inhibitor extracted from Zea primary roots accelerated the incorporation of radioactivity derived from 14C-proline into the sodium lauryl sulfate (SLS)-insoluble cell wall fraction. However, the inhibitor had no effect on the ratio of hydroxyproline to proline that was incorporated into the SLS-insoluble fraction.

We have discussed what this growth inhibitor may mean in the geotropic curvature of Zea primary roots.

This content is only available as a PDF.
You do not currently have access to this article.