Multistepbiosynthesispathway primarily in roottissues, involving conversion of adeninederivatives like ATP into active cytokinin forms like isopentenyladenine and trans-zeatin
Initiated in chloroplasts, completed in cytosol, involving conversion of glyceraldehyde-3-phosphate and pyruvate to isopentenylpyrophosphate and then to xanthoxin, which is exported to cytosol and converted to ABA
Synthesized primarily in leaves, fruits, and root caps, transported via xylem and phloem to other plant parts, especially under water stress conditions
Plant hormones that regulate various developmental processes, including stem elongation, germination, dormancy, flowering, flowerdevelopment, and leaf and fruit senescence
In most species the effect of a vernalizing cold treatment can be partially or totally eliminated by several days of heat treatment, typically 30–40 °C (devernalization)