ARD (TRAESCS4D02G276400) — triticum aestivum

Summary

TRAESCS4D02G276400 (TaARD) on wheat chromosome 4D encodes a protein with acireductone dioxygenase (Ni²⁺-requiring) activity and acireductone dioxygenase (Fe²⁺-requiring) activity, and also has peroxidase, GTPase and transcriptional co-regulator activities annotated. The protein belongs to the ARD_euk and RmlC-like cupin superfamilies. TaARD is associated with photosynthetic NADP⁺ reduction, photosystem I stabilization, thiamin anabolism, methionine metabolism, cell redox homeostasis, and negative regulation of leaf senescence and gene expression. It localizes to the chloroplast thylakoid membrane and photosystem I reaction center. The gene is linked to agronomically important traits including days to heading, seed yield, stripe rust, drought and salt stress response, high temperature stress response, leaf and silique morphology, and gibberellic acid, ethylene, jasmonic acid and brassinosteroid sensitivity. Studies of related genes in other species connect the family to submergence adaptation, root architecture, salt tolerance and abiotic stress responses.