PAL1 — Solanum tuberosum

Summary

PGSC0003DMG400031457, designated PAL1 on potato chromosome 3, encodes a phenylalanine ammonia-lyase (EC 4.3.1.24) with ammonia-lyase and protein dimerization activities, and also carries DNA-binding transcription factor activity. The enzyme is associated with the phenylpropanoid, salicylate and suberin biosynthesis pathways. In potato, PAL1 has been linked to heat and drought tolerance, chemical defense, and wound-induced suberization. The gene is annotated to L-phenylalanine and lignin breakdown, cinnamic acid anabolism, and negative regulation of cytokinin signalling. It is associated with disease resistance, pathogen and wound responses, anthocyanin and flavonoid biosynthesis, and tolerance to UV-B, salt and freezing. Localisation evidence places the product in the cytosol, cytoplasm, nucleus and SCF complex. Studies of related genes in other species connect the family to virus resistance, fruit shelf life, floral scent production and herbivore defense.