NAC — Asparagus officinalis

Summary

A4U43_C03F17690, designated AoNAC, encodes a NAC domain-containing protein on asparagus chromosome 3. The product has DNA-binding transcription activator activity, sequence-specific DNA binding, and protein homodimerization activity, and localizes to the nucleus and cytosol. In asparagus, AoNAC is associated with regulation of root hair elongation, leaf senescence, abscisic acid homeostasis, anther development, photomorphogenesis, lignin anabolism, glucosinolate metabolism, and responses to hypoxia and sucrose. The gene is linked to traits including leaf senescence, chlorophyll content, photosynthetic rate, root thickness, ethylene sensitivity, brassinosteroid content, disease tolerance, and seedling growth. Studies of related genes in other species connect the family to drought tolerance, salt stress sensitivity, thermomemory, pathogen resistance, and fruit ripening.