TSN — Triticum turgidum subsp. durum

Summary

TRITD4AV1G198150, designated TSN (also known as TtTSN, TtTUDOR1, TtTSN2, TtTSN1, TSN2, TSN1, TtTUDOR2, TUDOR2, TUDOR1) on durum wheat chromosome 4A, encodes a ribonuclease with a Tudor domain and staphylococcal nuclease OB-fold, possessing nuclease and hydrolase activity and binding RNA and mRNA. The gene is associated with spot blotch and Septoria nodorum blotch susceptibility, tan spot severity, and salt and heat stress responses. It is associated with positive regulation of gibberellin biosynthesis, protein secretion, mRNA breakdown, RNA-dependent gene silencing, and cellular response to heat and cadmium. The product localizes to the RNAi effector complex, perinuclear cytoplasm, P-bodies, stress granules, nuclear envelope, endoplasmic reticulum, plasmodesmata, and plastid. Associations with grain number and weight and delayed germination have been noted. Related genes in other species link the family to seed germination and gibberellin biosynthesis.