RSR1 — Zea mays

Summary

ZmRSR1 (also known as ZmRAP2.7, TOE1) on maize chromosome 8 encodes an AP2/ERF domain-containing protein with DNA-binding, transcription coactivator and corepressor binding activities, and blue light photoreceptor activity. The gene is associated with regulation of starch biosynthesis, seed development, floral organ abscission, and epidermal cell fate specification. It is linked to yield, seed size, grain filling, starch content, and flowering time. Associations also include seed quality, plant size, leaf width, branch angle, photoperiod-sensitive flowering, male sterility, and responses to aphids, thrips, jasmonic acid, and cytokinin. Studies of related genes in other species connect the family to trichome development, seed coat pigmentation, mucilage production, and defense against pathogens and insects.