SOC1 — Brassica juncea

Summary

BJUB08G38030S (SOC1, also known as AGL20) on Indian mustard chromosome B08 encodes a MADS-box transcription factor with RNA polymerase II-specific DNA-binding and transcription corepressor activities. It is associated with the regulation of flowering time, including both upregulation and downregulation of the vernalization response, as well as floral meristem identity, floral organ specification (stamen, carpel, sepal, petal), and seed growth. The gene has been linked to photoperiod-sensitive flowering, days to flowering, inflorescence and flower morphology, petal number, and responses to UV-B light, high temperature, and drought. Additional associations include anthocyanin content, jasmonic acid content, leaf composition, chloroplast development, and stress-induced flowering. Studies of related genes in other species link the SOC1 family to flowering time, floral meristem determination, seed yield, and abiotic stress tolerance.