SR1 — Nicotiana attenuata

Summary

A4A49_28403 (SR1, also known as CMTA3) in Nicotiana attenuata encodes a protein with domains including IPT, CG-1, Ig_E-set, IQ motif, ankyrin repeats, and P-loop NTPase, and has DNA-binding and transcriptional co-regulator activity. It is associated with diverse biological processes including cellular response to aluminum, reactive oxygen species and hydrogen peroxide biosynthesis, cytokinin metabolism, exocytosis, pigmentation, anthocyanin regulation, pistil development, and responses to cold and freezing. The gene is linked to traits such as total soluble sugar content, fruit quality, axillary bud morphology, brassinosteroid content, flowering time, seed size, root development, leaf senescence, and stress responses to high and low temperature. Localization evidence places the product in the nucleus, cytoplasm, and extracellular space. Studies of related genes in other species connect the family to immunity, pathogen resistance, cold and salt tolerance, and aluminum resistance.