PCK1 — Sorghum bicolor

Summary

SORBI_3001G432800 (symbol PCK1, also known as SbPCK1, SbPCK2, SbPEPCK, PCK2) on sorghum chromosome 1 encodes a phosphoenolpyruvate carboxykinase (ATP) enzyme (EC 4.1.1.49) with ATP-binding activity, belonging to the PEPCK_ATP family. This gene is associated with C4 photosynthesis, gluconeogenesis, cellular response to phosphate starvation, seed development, and defence response to fungi. The encoded protein localises to the cytosol, cytoplasm, and nucleolus. PCK1 is linked to traits including photosynthetic rate, respiration rate, grain filling period, leaf chlorosis, and amino acid content, as well as phenotypes such as photosynthetic regulation, stomatal closure, seedling establishment, hypocotyl elongation, post-germinative growth, cotyledon development, and soluble sugar content. Related genes in other species are linked to traits including grain yield, biomass yield, water use efficiency, heat and cold tolerance, chlorophyll content, and seed germination.