LTN1 — Triticum turgidum subsp. durum

Summary

TRITD1AV1G214470 (LTN1, also known as TtLTN1, TtUBC24, TtPHO2, UBC24, or PHO2) on durum wheat chromosome 1A encodes a ubiquitin-conjugating enzyme E2 24 with ubiquitin-protein transferase activity (EC 2.3.2.23) and inositol hexakisphosphate binding. The gene is associated with phosphate homeostasis, including regulation of phosphate membrane transport, intracellular Pi homeostasis, and cellular response to phosphate starvation. It is linked to seed development, protein polyubiquitination, and ubiquitin-dependent proteolysis. Associations with agronomic traits include shoot system phosphorus content, phosphorus uptake, leaf necrosis, stem rust and stripe rust responses, low temperature stress response, abscisic acid sensitivity, and plant growth and development. The encoded protein localizes to the nucleus, endoplasmic reticulum, Golgi complex, mitochondria, plasma membrane, and trans-Golgi network. Related genes in other species link the family to Pi homeostasis, root and shoot development, and seed traits.