ERD8 — Triticum turgidum subsp. durum

Summary

TRITD7BV1G071080 (symbol ERD8) on durum wheat chromosome 7B encodes a member of the heat shock protein 90 family, possessing ATP-dependent protein folding chaperone activity, transcription regulator activity, and multiple binding functions including Hsp90 binding, LRR domain binding, and siRNA/miRNA binding. The gene is associated with powdery mildew resistance in durum wheat and has been connected to plant immunity, heat stress response, chilling-induced chlorosis, and chloroplast protein import. Additional associations include maturity time, reproductive growth traits, photoperiod-sensitive flowering, seed viability, and responses to various pathogens including downy mildew, Fusarium head blight, and stripe rust. The encoded protein localizes to the chloroplast outer membrane, ER lumen, vesicles, and proteasome, and is linked to brassinosteroid signalling, auxin metabolism, and circadian clock photoentrainment.