PHAVU_001G189400 — Phaseolus vulgaris

Summary

PHAVU_001G189400, designated PvABI5 (also known as DPBF1 or GIA1) on French bean chromosome 1, encodes a bZIP transcription factor of the BZIP46-like family. The product possesses DNA-binding transcription activator activity and is associated with diverse molecular functions including protein phosphatase binding, SUMO transferase activity, and Ca2+/CaM-dependent kinase activity. PvABI5 is linked to regulation of abscisic acid anabolism, TOR signaling, response to pH and calcium ions, endosomal transport, and chromatin silencing. The gene has been connected to numerous agronomic traits including seed set percent, endosperm storage protein content, inflorescence length, leaf elongation rate, vegetative to reproductive phase transition, iron concentration, phosphorus uptake, and responses to aluminum, cadmium, nitrate, and alkali soil. It is also associated with phenotypes such as altered ABA sensitivity, reduced seed germination, oxidative stress response, cold response, and seed size. Studies of related genes in other species link the family to abscisic acid signaling, salt stress tolerance, seed longevity, germination inhibition, and virus resistance.