SSA — Sorghum bicolor

Summary

SbSSA (SORBI_3001G344500) on sorghum chromosome 1 encodes a sucrose synthase enzyme (EC 2.4.1.13) with sucrose synthase activity, also annotated for DNA binding transcription factor activity, ATP binding, and protein binding. The gene is associated with sucrose and starch metabolism, glucan anabolism, callose deposition in phloem sieve plates, and responses to anoxia, hypoxia, flooding, carbon dioxide, sorbitol, mannitol, glucose, sucrose, and nitrate starvation. It is linked to grain yield, grain filling, starch content, total soluble sugar content, fruit quality, carotenoid content, anthocyanin content, photosynthetic rate, leaf senescence, root development, root oxidative activity, cell elongation, auxin and brassinosteroid sensitivity, photoperiod sensitivity, and vegetative to reproductive phase transition. The protein localises to the cytosol, vacuole, cell wall, chloroplast stroma, plasmodesmata, plastid, mitochondria, and plasma membrane. Studies of related genes in other species connect the family to grain quality, seed weight, drought and submergence tolerance, and heat and chilling tolerance.