RA3 — Sorghum bicolor

Summary

SORBI_3002G381500 (symbol RA3, preferred name SbTPP1) on sorghum chromosome 2 encodes a trehalose-phosphatase (EC 3.1.3.12) with trehalase activity, belonging to the HAD-superfamily hydrolase IIB and OTSB-like families. The gene is associated with mycose biosynthesis, regulation of secondary shoot formation, glutathione and sucrose metabolism, phenylpropanoid and lignin anabolism, and responses to cadmium, oxidative stress, osmotic and salinity stress, and cold. It is linked to signal transduction and localizes to the nucleolus, cytosol, cytoplasm, and nucleus. Associations include photosynthetic rate, grain yield, coleoptile and root elongation, lateral root formation, primary root growth, auxin accumulation, and submergence. Studies of related genes in other species connect the family to cold acclimation, drought and salt stress tolerance, trehalose-6-phosphate phosphatase activity, inflorescence branching, and meristem determinacy.