SNAC1 — Triticum aestivum

Summary

TRAESCS5A02G468300, designated TaSNAC1 on wheat chromosome 5A, encodes a NAC-domain transcription factor with sequence-specific DNA binding and protein homodimerization activity. The gene is associated with responses to water, nitrate import, cell wall thickening, regulation of apoptotic processes, detection of biotic stimulus, stress-activated MAPK cascade, defense response by callose deposition, systemic acquired resistance, induced systemic resistance, and hydrogen peroxide metabolism. TaSNAC1 localizes to the nucleus and has been linked to grain yield per plant, harvest index, test weight, flag leaf senescence, plant vigor, stand establishment, grain iron and zinc content, drought sensitivity, leaf chlorophyll content, root weight and number, lateral root number, cell membrane stability, stripe rust disease response, maturity time, reproductive period, and cytokinin content. Studies of related genes in other species connect the family to drought tolerance, salt tolerance, abscisic acid sensitivity, and stomatal regulation.