NAC — Nicotiana attenuata

Summary

A4A49_08976 (NaNAC) on chromosome 2 of coyote tobacco (Nicotiana attenuata) encodes a NAC-domain transcription factor with DNA-binding transcription activator activity, sequence-specific DNA binding, and protein homodimerization activity. The gene is associated with diverse biological processes including secondary thickening, root hair elongation, dehiscence, pigmentation, jasmonic acid and zeatin anabolism, the shikimate pathway, and cellular respiration. It localizes to the nucleus and cytosol. Associations with agronomically relevant traits include leaf relative water content, chlorophyll content, photosynthetic rate, respiration rate, ethylene sensitivity, leaf senescence, root thickness, disease tolerance, and salt tolerance. The gene is also linked to responses to oxidative stress, carbon and nitrogen metabolism, drought resistance, pathogen susceptibility and resistance, abscisic acid and salicylic acid signalling, and thermomemory. Studies of related genes in other species connect the family to drought tolerance, ABA sensitivity, salt stress sensitivity, and enhanced thermotolerance.