RA3 — Zea mays

Summary

ZM00001EB327910, also known as RA3 and ZmTPP1 on maize chromosome 7, encodes a trehalose-phosphatase (EC 3.1.3.12) belonging to the trehalose-phosphatase and HAD-like superfamily domains. This gene is associated with trehalose (mycose) metabolism and biosynthesis, as well as phosphate metabolism, inositol phosphate metabolism, and sucrose anabolism. It is linked to ear diameter and length, kernel number per row, grain number, size, weight and yield, tassel branch number, inflorescence branching, plant height, leaf number, tiller number, stem elongation, anthesis time, photosynthetic rate, sucrose content, and drought tolerance. Additional associations include ear development, bract development, meristem identity, heterosis, nitrogen utilization, and responses to starvation and stimulus. Studies of related trehalose-phosphatase genes in rice link the family to spikelet number.