FLO4 — Zea mays

Summary

ZM00001EB349810, designated FLO4 and also known as ZmPPDK, encodes a pyruvate, phosphate dikinase (EC 2.7.9.1) with ATP-binding and kinase activity, localised to the plastid inner membrane, chloroplast envelope and stroma. In maize, this gene is associated with C4 photosynthesis, the xanthophyll cycle, photoprotection, carbohydrate storage, nitrogen utilization, and regulation of endosperm development. It has been linked to a floury endosperm phenotype and to traits including grain yield, grain size, starch and amylose content, protein content, photosynthetic rate, chlorophyll content, specific leaf area, cold and drought tolerance, disease tolerance, and flowering time. Studies of related genes in other species connect the family to grain filling, seed development, grain texture, and nitrogen remobilization.