SPS — Zea mays

Summary

ZM00001EB364620 (SPS, also known as ZmSPSB, ZmSPS1, or ZmSPS3F) on maize chromosome 8 encodes a protein with sucrose-phosphate synthase activity (EC 2.4.1.14) and sucrose synthase activity. This gene is associated with carbohydrate metabolism and anabolism, phloem loading and unloading, ear development, energy homeostasis, and rhythmic behavior. It has been linked to numerous agronomic traits including grain fresh and dry weight, ear weight, starch and sucrose content, leaf area index, leaf elongation rate, anthesis-silking interval, seedling vigor, flag leaf senescence, grain filling period, and plant yield. Additional associations include leaf thickness, stem diameter, root fresh and dry weight, nitrogen and phosphorus content, abscisic acid content, and nitrate transport. Related genes in other species are linked to sucrose biosynthesis and synthesis, and to leaf, seedling, inflorescence, and pollen phenotypes.