TPP1 — Sorghum bicolor

Summary

SORBI_3010G089600, designated TPP1 (also known as TPP4–TPP9, TPPA–TPPC, TPPI–TPPJ, and SbTPPG–SbTPPI) on sorghum chromosome 10, encodes a trehalose-phosphatase (EC 3.1.3.12) with trehalase activity, belonging to the HAD-superfamily hydrolase and OTSB-like protein families. The gene is associated with trehalose (mycose) biosynthesis, regulation of secondary shoot formation, and responses to cold, salinity, osmotic stress, oxidative stress, and cadmium. It is linked to glutathione, sucrose, phenylpropanoid, and lignin metabolism, as well as signal transduction and homeostasis. The product localizes to the nucleolus, cytosol, cytoplasm, and nucleus. TPP1 is associated with photosynthetic rate, grain yield, coleoptile elongation, primary and lateral root growth, root elongation, auxin accumulation, and submergence. Studies of related genes in other species connect the TPP family to drought, salt, and cold stress tolerance, inflorescence branching, meristem determinacy, and water use efficiency.