MOC1 — Oryza sativa Japonica

Summary

OsMOC1 (OS01G0268900) on rice chromosome 1 encodes a MOC1-like protein with Holliday junction binding and endodeoxyribonuclease RUS activity, as well as metal and DNA binding. It is associated with meristem development and initiation, organogenesis, cell division and the cell cycle, anaphase, DNA recombination and repair, abscission, hypersensitivity, chloroplast organization, ABA and GA signaling, and regulation of seed germination. The protein localizes to the chloroplast nucleoid and nucleus. Trait associations include tiller number, spikelet number, grain yield, seed shattering, days to heading, and meristem identity. Studies of related genes in other species link the family to panicle number, grain number and weight, floral organ number, root morphology, and photochemical quenching, as well as chloroplast nucleoid segregation and decreased chloroplast DNA copy number.