CNA — Phaseolus vulgaris

Summary

PHAVU_010G146200, designated PvCNA, encodes a homeodomain-leucine zipper (HD-Zip III) transcription factor containing MEKHLA, START and homeodomain domains. The protein localises to the nucleus and binds DNA, transcription regulatory regions, lipids and other proteins. PvCNA is associated with meristem initiation and maintenance, adaxial/abaxial axis specification, leaf shaping and morphogenesis, phloem or xylem histogenesis, leaf vascular pattern formation, and determination of dorsal identity and bilateral symmetry. It has been linked to defence responses including induced systemic resistance, callose deposition, and responses to insects and bacteria, as well as indole glucosinolate metabolism. Associations with shoot apical meristem development, lignification, xylem and vascular development, leaf phyllotaxis, adaxial-abaxial leaf polarity, disease tolerance, and insect damage response have been reported. Related genes in other species are linked to secondary wall development, salt tolerance, root length, indolic glucosinolate biosynthesis, callose deposition and resistance to bacterial pathogens.