GID1 — Brassica juncea

Summary

BJUA05G36990S (GID1, BjCXE10) on chromosome A05 of Indian mustard encodes a protein with an alpha/beta hydrolase fold and a gibberellin receptor domain, annotated with gibberellin binding, hydrolase activity, and ent-kaurene oxidase activity. It is associated with gibberellin-mediated signalling, the transport of the GA-GID1 complex to the nucleus, and the polyubiquitination and degradation of DELLA/SLR1 proteins. The gene is linked to stem length, whole plant size, leaf area, seed set percent, fruit growth and development, photosynthetic ability, photoperiod-sensitive flowering time, and responses to temperature stress, light quality, and viral disease. It has also been connected to auxin homeostasis, indole glucosinolate biosynthesis, seed germination, dormancy, and fertility. Studies of related genes in other species link the family to dwarfism, delayed flowering, reduced seed yield, and GA insensitivity.