| Function | Amino Acid |
|---|---|
| Anti-stress agent | Hyp, Pro |
| Chelating agent | Cys, Glu, Gly, His, Lys |
| Cold weather resistance | Ala, Arg |
| Generative development of plants and improvement of the plant pollen fertility | Hyp, Pro |
| Growth stimulator | Glu |
| Precursor of auxin | Ser, Trp, Val |
| Precursor of chlorophyll | Gly |
| Precursor of polyamines: necessary to start the cell division | Arg |
| Precursor to the formation of lignin and woody tissues | Phe |
| Regulation of the water balance | Hyp, Pro, Ser |
| Reserve of organic nitrogen necessary for the synthesis of other amino acids and proteins | Glu |
| Stimulation of the chlorophyll synthesis | Ala, Lys, Ser |
| Stimulation of the ethylene synthesis | Met |
| Stimulation of the germination | Asp, Glu, Lys, Met, Phe, Thr |
| Stimulation of the hormone metabolism | Ala |
| Stimulation of the resistance mechanism to viruses | Ala |
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