RACK1 — Brachypodium distachyon

Summary

BdRACK1 (BRADI_2G46840V3) on chromosome 2 of Brachypodium distachyon encodes a RACK1-like protein containing WD40 repeats, a scaffold that also exhibits ADP-glucose pyrophosphatase, ADP-ribose pyrophosphatase, NAD+ diphosphatase, and nucleoside diphosphatase activities, along with MAP kinase scaffold, translation regulator, and PKC binding functions. The gene is associated with positive regulation of ethylene biosynthesis, gibberellin-mediated signalling, root system development, leaf pattern formation, and pri-miRNA processing. It localises to the heterotrimeric G-protein complex, nuclear speck, and Cul4-RING E3 ubiquitin ligase complex. BdRACK1 is linked to agronomically relevant traits including adult leaf morphology, plant reproduction, seed coat morphology, photoperiod-sensitive flowering time, wheat powdery mildew disease response, aluminium response, phosphorus uptake, adventitious root number, and temperature stress response.