PHL1 — Oryza sativa Japonica

Summary

OS07G0438800 (symbol PHL1, also known as PHR2, OsPHR1, OsPHR2, PHL4, OsPHL1, OsPHL4) on rice chromosome 7 encodes a protein with a Myb_CC_LHEQLE domain, belonging to the PHR1-like family, and exhibits DNA binding, transcription coactivator activity, SUMO transferase activity, and protein homodimerization activity. This gene is associated with phosphorus utilization, phosphate transport regulation, and responses to phosphate starvation, as well as nitrogen and sulfate homeostasis, strigolactone and glycerolipid anabolism, and phospholipid breakdown. It is linked to traits including phosphorus concentration and uptake, seed protein content, panicle length, root architecture, root hair formation, crown root development, plant size, male sterility, and yield. The gene is also associated with responses to arsenite, high light intensity, salicylic acid metabolism, and downregulation of systemic acquired resistance. Related genes in other species link the family to phosphate homeostasis, photosynthesis efficiency, and drought response.