GL1 — Brassica juncea

Summary

BJUA10G20840S (symbol GL1, also known as BjWER and BjMYB66) on chromosome A10 of Indian mustard (Brassica juncea) encodes a MYB-domain transcription factor with DNA-binding, protein-dimerization and protein-kinase activities. The gene is associated with plant epidermal cell fate specification, trichome spacing, root-hair differentiation, stomatal complex formation, and positive regulation of anthocyanin biosynthesis. It is linked to inhibition of brassinosteroid signalling, regulation of lignin biosynthesis, root meristem size, and autophagy. Associations extend to agronomically relevant traits including leaf trichome density, root epidermal cell length, flavonoid and anthocyanin content, iron concentration, flowering time, drought tolerance, salt tolerance, disease tolerance, and responses to low temperature, auxin, and abscisic acid. The product localises to the nucleus, plasma membrane, cytoplasm, vesicles, and root hairs. Related genes in other species are associated with epidermal patterning, trichome and root-hair cell fate, anthocyanin accumulation, and insect resistance.