SPL2 — Oryza sativa Japonica

Summary

OsSPL2 (also known as SPL3, SPL4, SPL10, SPL11, and SPL12) on rice chromosome 2 encodes a member of the SBP-domain family of transcription factors, with DNA-binding and transcription activator activity. In rice, the gene is associated with panicle and spikelet development, grain yield, grains per panicle, branching, cell division, and disease resistance, particularly to blast disease and immune responses. It is also linked to wax metabolism, starch metabolism, leaf shaping, flowering time regulation, and stomatal closure. Additional associations include grain number and size, tiller number, panicle length, photoperiod sensitivity, temperature stress response, lignin content, and vegetative vigor. Studies of related genes in other species link the group to plant architecture, inflorescence development, and phase transitions.