SPL7 — Triticum aestivum

Summary

TRAESCS1D02G254700, designated TaSPL7 (also known as TaSPL9-1D), encodes an SBP-domain-containing protein on wheat chromosome 1D. The protein localises to the nucleus and nuclear speck, binds DNA and zinc, and exhibits transcription factor and homodimerisation activities. TaSPL7 is associated with copper ion homeostasis and the cellular response to copper starvation, as well as with regulation of developmental growth and DNA-templated transcription. The gene has been linked to grain iron and zinc content, seed protein content, grain yield per plant, test weight, harvest index, stand establishment, plant vigour, spike width, days to maturity, vegetative growth time, flower development, lateral root number, root number, leaf and coleoptile colour, pericarp and seed coat colour, grain texture and colour, drought and copper sensitivity, wheat stripe rust disease response, quantum yield, cytoplasmic male sterility, sugar content, and potassium uptake. Studies of related genes in other species connect the family to panicle density, spikelet number, grain shape, flowering time, and yield.