SARD4 — Triticum aestivum

Summary

TRAESCS1D02G191900 (symbol SARD4, TaSARD4-1D) on bread wheat chromosome 1D encodes a protein with dehydropipecolic acid reductase activity and redox activity, belonging to the ornithine cyclodeaminase/mu-crystallin family with an NAD(P)-binding domain. In wheat, SARD4 is associated with powdery mildew resistance, basal immunity, systemic acquired resistance, and immunity. It is linked to biological processes including L-pipecolate biosynthesis, upregulation of systemic acquired resistance, and responses to biotic and abiotic stimuli, stress, and endogenous signals. The gene is associated with traits such as wheat powdery mildew disease response, leaf chlorophyll content, salinity tolerance, seed germination, grain yield, and drought tolerance. SARD4 localises to the plastid and cytoplasm and is linked to pathways in jasmonic acid signalling, hormone signalling, and gravitropism. Studies of related genes in other species associate the family with anthesis time and photochemical quenching.