AP2 — Nicotiana attenuata

Summary

A4A49_41243 (AP2) in coyote tobacco (Nicotiana attenuata) encodes a transcription corepressor with DNA-binding, protein homodimerization, and zinc-binding activities, belonging to the AP2/ERF domain family. It is associated with flower formation, floral organ identity and abscission, seed development and abscission, organ growth, and regulation of starch biosynthesis. The gene is linked to secondary metabolism, including nicotine, isoflavonoid, cytokinin, and triterpenoid anabolism, as well as the SOS response and viral genome replication. Associations with agronomic traits include leaf nitrogen and sugar content, photosynthetic rate, chlorophyll content, drought sensitivity and tolerance, germination rate, root morphology, and flowering time. The gene is also connected to vegetative phase change, fruit ripening, lycopene accumulation, and ethylene-responsive gene expression.