SPL2 — Oryza sativa Japonica

Summary

OsSPL2 (also known as OsSPL3, OsSPL10, OsSPL11, and OsSPL12) on rice chromosome 6 encodes an SBP-domain transcription factor that localises to the nucleus and is annotated with DNA-binding transcription activator activity. The gene is associated with upregulation of long-day photoperiodism, flowering, and regulation of timing of transition from vegetative to reproductive phase. It is linked to leaf shaping, plant epidermal cell fate specification, regulation of secondary shoot formation, stomatal closure, and activation of defence response to bacteria. Associations with traits include grain number, grain size, panicle length, tiller number, plant height, vegetative vigor, photoperiod sensitivity, and responses to temperature, oxidative, and abiotic stresses. The gene is also connected to spot blotch disease tolerance, herbicide sensitivity, and traits such as germination rate, leaf senescence, and chloroplast development. Studies of related genes in other species link the family to plant architecture, inflorescence development, and phase change.