Figure 11.
Plant hormone signal transduction pathway and phenylpropanoid biosynthesis pathway related to mesocotyl elongation. (A) Key nodes of plant hormone signaling pathway. The green box represents the node that responds to exogenous SA, the blue box represents the node that responds to exogenous 6-BA, and the red font represents the node that responds to exogenous SA–6-BA. TGA: TGACG motif binding protein; PR-1: pathogenesis-related protein-1; JAR-1: jasmonic acid resistant 1; JAZ: Jasmonate ZIM-domain; MYC: myelocytomatosis; ERF: ethylene responsive factor; PIF4: phytochrome interacting factor 4; ARR-A: type-A response regulators; ARR-B: type-B response regulators; DELLA: aspartic acid–glutamic acid–leucine–leucine–alanine; AUXI: Auxin/indole-3-acetic acid; ARF: auxin response factor; SAUR: small auxin-up RNA; GH3: Gretchen Hagen 3; BZR1: brassinazole resistant 1; BRI1: brassinosteroid insensitive 1; TCH4: xyloglucan endotransglucosylase/hydrolase (XTH) family member. (B) Phenylpropanoid biosynthesis pathway.