RSR1 (TRAESCS1B02G076300) — triticum aestivum

Summary

TRAESCS1B02G076300, designated TaRSR1 (also known as TaTOE1 or TaRAP2.7-1B) on bread wheat chromosome 1B, encodes a protein containing an AP2/ERF DNA-binding domain. The product exhibits sequence-specific DNA binding, transcription corepressor and coactivator activity, blue light photoreceptor activity, and protein homodimerization. TaRSR1 is associated with regulation of starch biosynthesis, seed development, endosperm development, floral organ abscission, seed abscission, and plant epidermal cell fate specification. It is linked to yield, seed size, grain filling, starch content, and flowering time. The gene is associated with spike type, spikelet density, floret number, grain weight per spike, seminal root length, frost damage, and responses to aphids and rice thrips. Related genes in other species are linked to photoperiodic flowering time control, trichome density, and drought tolerance.