AAD1 — Triticum aestivum

Summary

TRAESCS5B02G123200 (TaAAD1) on wheat chromosome 5B encodes a stearoyl-CoA 9-desaturase and stearoyl-[ACP] desaturase with a fatty acid desaturase-2 domain, localised to the chloroplast thylakoid, stroma and plastid. The gene is associated with fatty acid homeostasis, unsaturated fatty acid anabolism, lipogenesis, regulation of jasmonic acid and salicylic acid mediated signaling pathways, endosperm development, defense response to insect, defence response to bacteria, antiviral response, protein ubiquitination, and SCF-dependent proteasomal ubiquitin-dependent protein breakdown. TaAAD1 is linked to powdery mildew resistance, grain width, grain weight, grain yield, spike density, plant height, chlorophyll content, floral organ identity, dwarf phenotype, altered fatty acid composition, seed oil content, stearic and omega-7 fatty acid content, cuticle development, spontaneous cell death, and defense signaling. Studies of related genes in other species connect the family to resistance to multiple pathogens, aphid resistance, and salicylic acid-mediated defense response.