Sr45 — Triticum aestivum

Summary

TRAESCS1D02G016600 (symbol Sr45) on bread wheat chromosome 1D encodes a protein containing an RNPS1_RRM domain and an RRM domain, placing it in the nucleotide-binding alpha/beta plait superfamily. This gene is associated with the regulation of cell cycle processes, including mitotic chromosome condensation, nuclear division, DNA replication, and gamete generation, as well as nucleolus organization, proteasomal ubiquitin-independent protein catabolism, and 20S proteasome assembly. It has been linked to auxin signalling, seed development, and regulation of seed size. Associations with agronomic traits include stem rust and leaf rust disease response, grain number, grain weight, grain yield, plant height, spike length, panicle length, tiller number, shoot fresh weight, cold tolerance, and heterosis. Related genes in other species link the family to spikelet number, abscisic acid sensitivity, and abiotic and biotic stress responses.