SIZ1 — Arabidopsis thaliana

Summary

AT3G25910, known as SIZ1 (SALT INDUCED ZINC FINGER PROTEIN1) in Arabidopsis thaliana, encodes an uncharacterized protein containing a DUF1644 domain and is annotated with DNA-binding transcription activator activity and kinase activity. SIZ1 is localized to the nucleus and is associated with diverse biological processes including thermomorphogenesis, desumoylation, phosphate homeostasis, nitrate assimilation, glucosinolate and brassinosteroid anabolism, and response to water. The gene has been linked to numerous traits and phenotypes, such as phosphate use efficiency, arsenite resistance, pathogen susceptibility, immunity, disease resistance, abiotic stress tolerance (including drought, cold, freezing, and heat), seed size, flowering time, germination rate, root length, stomatal opening, copper concentration and sensitivity, anthocyanin content, and brassinosteroid sensitivity. SIZ1 is also associated with reduced seed production and abnormal embryo development.