PPC — Sorghum bicolor

Summary

SbPPC (SORBI_3007G106500) on sorghum chromosome 7 encodes a phosphoenolpyruvate carboxylase (EC 4.1.1.31) with phosphoenolpyruvate carboxylase activity, protein phosphorylated amino acid binding, and protein binding. This gene is associated with diverse biological processes including phloem sucrose loading, stomatal opening, seed germination, leaf development, cell division, TCA cycle, amino acid anabolism, autotrophy, hypersensitivity, cellular response to phosphate starvation, brassinosteroid-mediated signalling, and protein tetramerization. It localises to multiple cellular compartments such as the cytosol, chloroplast stroma, mitochondria, plasmalemma, apoplast, Golgi complex, plasmodesma, and plant-type vacuole. The gene has been linked to agronomically important traits including photosynthetic rate, grain filling period, anthesis time, stomatal resistance, leaf chlorosis, nitrate uptake, root morphology, seedling growth, and amino acid content. Studies of related genes in other species connect the family to salt stress tolerance, phosphate deficiency response, and nitrate response.