Its participation as a functional, structural or regulatory cofactor of a large number of enzymes is essential for the synthesis of tryptophan, which, in turn, is the precursor of indoleacetic acid.
It has an important role during seed germination and in the initial growth of seedlings, it is a structural, functional cofactor or that regulates the activity of many enzymes. Everything indicates that Zn participates in indole acetic acid (IAA) metabolism.
Deficiency – Severe reduction in plant size with compressed internodes. The leaves may become uniformly dark green in color, reduced in size and with spearhead-shaped leaflets.