VP1 — Brassica juncea

Summary

BJUB04G19100S (VP1, BjLEC2) on chromosome B04 of Indian mustard encodes a B3 DNA-binding domain transcription factor that localises to the nucleus and cytoplasm. It is associated with positive regulation of auxin biosynthesis, seed oilbody biogenesis, photoperiodism, flowering, flower development, embryo development ending in seed dormancy, ABA signalling and response, and DNA-dependent transcription. The gene has been connected to seed traits including width, length, weight, size, oil content, protein content, starch content, sucrose content, desiccation tolerance, germination, and triacylglycerol and storage protein accumulation. It is also linked to embryonic maturation, trichome formation, lateral root formation, gibberellin biosynthesis, vernalization memory, and cell dedifferentiation. Studies of related genes in other species link the family to seed oil accumulation, fatty acid content, somatic embryogenesis, and seed maturation.