AP2 — Solanum tuberosum

Summary

StAP2 (AP2, TOE1, RAP2.7) on potato chromosome 4 encodes an APETALA2 protein containing an AP2/ERF DNA-binding domain. It is associated with sequence-specific DNA binding, transcription coactivator and corepressor binding, and blue light photoreceptor activity. The gene is linked to the regulation of floral organ abscission, seed development, seed abscission, and plant epidermal cell fate specification. It has been connected to responses to biotic stimuli, including aphid and insect damage, and to traits such as starch yield and content, seed color, branch angle, photoperiod-sensitive flowering time, and plant male sterility. StAP2 is also associated with abscisic acid sensitivity, osmotic stress tolerance, and trichome patterning. Related genes in other species are linked to vegetative phase change, innate immunity, and abaxial trichome production.