【正文】
ion pathway (plantpathogen interaction) Light signaling responsive pathway Biological o’clock (circadian rhythm) regulatory pathway Development regulatory pathway e. g. flowering (autonomous), lead, root, trichome formation root apical meristem (RAM) shoot apical meristem (SAM) formation polarity and cell cytoskeleton rearrangement Specific cell fate determination and differentiation (Xylem and phloem specification, root anization (patterning)) Abiotic stress signaling pathways (salt, drought, heat, cold, metal, vernalization etc.) Plant hormone signaling transduction (auxin, ethylene, cytokinin, gibberellin, abscisic acid, brasinosteroid, jasmonic acid etc.) Definition of plant hormone 1. The word hormone is derived from the Greek verb meaning to excite. 2. hormones are anic substances synthesized in one tissue and transported out where their presence results in physiological responses ( not always true。 UEV (8)。 cullin (11)。 Ring (450)。 UBA, ubiquitin activating enzyme E2: UBC, ubiquitin conjugatingenzyme E3: ubiquitin protein ligase RBX: ringbox protein CUL: cullin CRL:cullin ring ligase HECT: homologous to E6AP COOH terminus RING: really interesting new gene protein domain SCF: SKP1CullinFbox SKP: S phase kinase associated protein Fbox: SKP/ASK interaction motif in cyclin F Biological significance of ubiquitin/proteosome system (UPS) in