SNAC1 — Oryza sativa Japonica

Summary

OS03G0815100 (SNAC1, OsSNAC1) on rice chromosome 3 encodes a NAC-domain protein (NAC19) with sequence-specific DNA binding and protein homodimerization activity, localizing to the nucleus. In rice, SNAC1 is associated with drought, salt, oxidative stress, and stomatal closure, as well as with reproductive development, including microgametogenesis, anther development, and double fertilization. It is also linked to dedifferentiation, somatic embryogenesis, meristem development, and chromatin organization. Associations extend to agronomic traits such as grain yield, grain shape, grain length and width, plant height, maturity time, and floury endosperm, along with tolerance to salinity, heat, and cold. Studies of related genes in other species link the family to drought recovery, stay-green trait, root architecture, water use efficiency, and grain protein content.