PI — Nicotiana attenuata

Summary

A4A49_26362 (symbol PI, also known as GLO) in Nicotiana attenuata encodes a protein with MADS-box, K-box, and MEF2-like domains, and is annotated with DNA-binding, transcription factor, protein dimerization, kinase, and chitosan-binding activities. The gene is associated with specification of petal and stamen identity, maintenance of floral organ and meristem identity, megagametogenesis, organogenesis, and cell fate specification. It is linked to responses to chitin, peptidoglycan, and heat stress, as well as oviposition and seed coat development. Associations with traits include flower, petal, sepal, stamen, carpel, and inflorescence morphology, floral organ size, petal number, stamen length, leaf margin and trichome morphology, cytoplasmic male sterility, bacterial blight resistance, heterosis, seed longevity, photoperiod-sensitive flowering time, jasmonic acid content, and high temperature stress response. Studies of related genes in other species link the family to floral organ identity, petal and stamen formation, and reproductive development.