ABI5 — Brassica oleracea

Summary

BoABI5 (BOLC102_C04P013180.1) on cabbage chromosome 4 encodes a bZIP transcription factor of the BZIP46-like family, with DNA-binding transcription activator activity and additional annotated molecular functions including protein phosphatase binding, SUMO transferase activity, and aromatic aminotransferase activity. This gene is associated with regulation of abscisic acid anabolism, TOR signaling, nitrate assimilation, and salicylic acid metabolism, as well as responses to pH and calcium ions. It has been linked to numerous agronomic traits including seed set percent, endosperm storage protein content, protein content, iron concentration, cadmium concentration, leaf elongation rate, whole plant size, inflorescence length, lignin biosynthesis, phosphorus uptake, nitrogen sensitivity, and alkali soil sensitivity. Associations also include plant male sterility, vegetative to reproductive phase transition, and plastid development. Studies in related genes in other species link the ABI5 family to abscisic acid responsiveness, seed longevity, salt stress tolerance, water use efficiency, and virus resistance.