HAG1 — Brassica napus

Summary

BnHAG1 (also known as BnPMG1, BnMYB28, or MYB28-4) on chromosome C07 of oilseed rape encodes a Myb-domain transcription factor with DNA-binding, transcription factor activity, and chromatin-binding functions. It is associated with the regulation of glucosinolate biosynthetic processes, including aliphatic and indolic glucosinolate anabolism, as well as responses to sulfur starvation, defense against insects, and induced systemic resistance. The gene has been connected to numerous agronomic traits, including seed protein content, flowering time, shoot growth angle, root architecture, lignin biosynthesis, and tolerance to abiotic stresses such as ammonium and oxidative stress. It is also linked to resistance to the fungal pathogen Sclerotinia sclerotiorum and to insect herbivory. Studies of related genes in other species associate the family with glucosinolate content, drought tolerance, and resistance to herbivory and fungal pathogens.