CKX2 — Solanum tuberosum

Summary

StCKX2 (PGSC0003DMG400000277) on potato chromosome 12 encodes a cytokinin dehydrogenase with FAD binding and oxidoreductase activity (EC 1.5.99.12). The gene is associated with cytokinin breakdown and signaling, downregulation of photosynthesis, sucrose and starch metabolism, wound healing, regeneration, inflorescence development, and cell division and differentiation. It has been linked to traits including seed weight, plant height, flowering time, sugar content, leaf morphology, potassium concentration, chloroplast development, and disease tolerance. Phenotypic associations include root system architecture, lateral root gravitropism, leaf growth, biomass production, seed yield, meristem size, and pathogen resistance. The protein localises to plastid inner membrane, chloroplast envelope, ER, vacuole, cytosol, and nucleus. Studies of related genes in other species link the family to root growth, salinity tolerance, drought tolerance, stomatal density, leaf senescence, and cytokinin level regulation.