MYB — Sorghum bicolor

Summary

SORBI_3010G223700, designated SbMYB on sorghum chromosome 10, encodes a REVEILLE 6 protein with a SANT/Myb DNA-binding domain and functions as a sequence-specific DNA-binding transcription factor and transcriptional co-regulator that also exhibits RNA polymerase binding activity. This nuclear-localized gene is associated with circadian rhythm regulation, photoperiodic flowering, fruit development, pigmentation, phenylpropanoid and glutathione metabolism, gluconeogenesis, green leaf volatile biosynthesis, and detoxification processes. SbMYB has been linked to grain color and yield, plant height, chlorophyll content, photosynthetic rate, photochemical quenching, flowering time, and responses to drought, salt, and temperature stress, including proline content changes. Related genes in other species are associated with circadian clock gene expression, hypocotyl elongation, leaf area, biomass, thermotolerance, cold and heat stress responses, and photomorphogenesis.