ASA1 — Triticum aestivum

Summary

TRAESCS5D02G196200 (ASA1, also known as ICS1) on bread wheat chromosome 5D encodes an isochorismate synthase, a plastid-localised enzyme with isochorismate mutase and anthranilate synthase activities. This gene is associated with phylloquinone anabolism, tryptophan formation, and aromatic amino acid metabolism. It has been linked to agronomically important traits including grain length, grain weight, grain size, pericarp and seed coat color, chlorophyll content, cell membrane stability, and responses to wheat powdery mildew and stripe rust. The gene is also connected to powdery mildew resistance and a hypersensitive response to stripe rust. Studies of related genes in other species link the family to salt, drought, and cold stress tolerance.