Influence on the permeability of xylem vessels to water. It participates in many physiological processes.
Controls DNA and RNA production It is involved in disease resistance. It acts as an enzyme activator.
Deficiency – Symptoms initially appear on the young leaves of the plants. They become wilted and curled. The petiole and stems of the youngest leaves are curved downwards. The leaves do not have the same green color. They become yellowish or lighter green, and then suffer yellowing.