NST1 — Arabidopsis thaliana

Summary

AT2G46770, designated NST1 (NAC SECONDARY WALL THICKENING PROMOTING FACTOR1, also known as ANAC043), encodes a NAC domain-containing transcription factor that localises to the nucleus and binds sequence-specific DNA. In Arabidopsis thaliana, NST1 is associated with secondary cell wall formation, thickening and deposition, as well as with secondary growth, transdifferentiation, and fruit and anther dehiscence. The gene has been connected to stem strength and stiffness, vascular bundle number and strength, lignin biosynthesis and content, cellulose content, silique morphology and dehiscence, pod dehiscence, turgor pressure, stem elongation, and salt stress tolerance. Additional associations include regulation of xylan, cellulose, auxin and phenylpropanoid anabolism, pectin breakdown, and anthocyanin accumulation. Studies of related genes in other species link the family to secondary wall loss, fragile stems and indehiscent siliques.