ABI3 — Phaseolus vulgaris

Summary

PHAVU_008G122100, designated PvABI3 on chromosome 8 of French bean (Phaseolus vulgaris), encodes a LEC2-like protein with a B3 DNA-binding domain. The protein exhibits sequence-specific DNA binding, transcription coactivator activity, and binds phytochrome, Hsp90, and ubiquitin-protein transferase. PvABI3 is associated with positive regulation of seed maturation, cellular response to gibberellin, hexokinase-dependent signaling, and regulation of triglyceride catabolism. It is linked to numerous agronomic traits including yield, seed set percent, seedling vigor, vegetative vigor, starch grain synthesis, iron content, photoperiod-sensitive flowering time, and resistance to oomycetes. The gene also connects to petal morphogenesis, leaf trichome density, root oxidative activity, and cadmium concentration. Studies of related genes in other species link the family to seed longevity, desiccation tolerance, ABA responsiveness, oil accumulation, and virus resistance.