SAR1 — Triticum turgidum subsp. durum

Summary

TRITD3AV1G103690, designated TtSAR1, encodes a small GTPase of the SAR1 family, possessing GTPase activity, GTP binding, and phospholipase activator activity, and is annotated as a DNA-binding transcription activator. This durum wheat gene on chromosome 3A is associated with COPII vesicle coat function, ER-to-Golgi transport, vesicle organization, and the unfolded protein response. It is linked to pollen development, cell division, and responses to heat and ER stress. Associations with root thickness, root morphology, disease tolerance, and temperature stress response traits have been noted. Related genes in other species link the family to protein trafficking and stress acclimation, and to seed and endosperm traits.