TPP1 — Sorghum bicolor

Summary

SORBI_3001G353300, designated SbTPP1 on sorghum chromosome 1, 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, and responses to cadmium, oxidative stress, cold, salinity, and osmotic stress. It is linked to glutathione, sucrose, and phenylpropanoid metabolism, including lignin anabolism, as well as signal transduction and homeostasis. The encoded protein localises to the nucleolus, cytosol, cytoplasm, and nucleus. SbTPP1 has been connected to 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 link the TPP family to drought, salt, and cold stress tolerance, trehalose metabolism, and inflorescence branching.