SAR1 — Triticum turgidum subsp. durum

Summary

TRITD5BV1G044810, designated TtSAR1 on durum wheat chromosome 5B, encodes a small GTPase of the SAR1 family, possessing GTPase activity, GTP binding, and phospholipase activator activity, and is also annotated with DNA-binding transcription activator activity. The gene is associated with COPII vesicle coat function, ER-to-Golgi transport, vesicle and membrane organization, secretion, and the unfolded protein response. It has been linked to pollen development, cell division, and responses to heat and ER stress. Associations with agronomic traits include temperature stress response, abiotic stress response, disease tolerance, root thickness and morphology, and fertility. Related genes in other species link the family to protein trafficking and stress acclimation, and to seed and endosperm development.