AP2 — Solanum tuberosum

Summary

StAP2 (PGSC0003DMG400004006) on potato chromosome 2 encodes a DNA-binding transcription factor with transcription corepressor activity, belonging to the AP2/ERF domain superfamily. It is associated with the regulation of floral organ identity, flower formation, and specification of floral organ identity, as well as seed development, abscission, and starch biosynthesis. The gene is linked to traits including flowering time, drought tolerance, starch yield and content, photosynthetic rate, root morphology, and jasmonic acid content. It has been connected to lycopene accumulation and fruit ripening, and to processes such as vegetative phase change, ethylene-responsive gene expression, somatic embryogenesis, and photoassimilate translocation. Localised to the nucleus, cytoplasm, and transcription regulator complex, StAP2 is also associated with nitrate transport and shoot apical meristem development.