VP1 (MTR_7G059330) — Medicago truncatula

Summary

MTR_7G059330, also known as MtABI3, VP1, MtSIS10 or SIS10, encodes a LEC2-like protein with a B3 DNA-binding domain on barrel medic chromosome 7. The product exhibits sequence-specific DNA binding, transcription coactivator activity, and binds cis-regulatory regions, phytochrome, Hsp90, and has ubiquitin-protein transferase activity. MtABI3 is associated with seed maturation, dormancy, desiccation tolerance acquisition, seed growth, and positive regulation of seed maturation. It is linked to cellular responses to gibberellin, trehalose, and hexokinase-dependent signaling, as well as regulation of triglyceride catabolism, actin polymerization, and pectin anabolism. The gene has been connected to numerous agronomic traits including yield, seed set, seedling vigor, vegetative vigor, seed viability, iron content, cadmium concentration, phosphorus uptake, water stress response, temperature stress response, aphid response, photoperiod sensitivity, and plant male sterility. Studies of related genes in other species link the family to seed development, ABA responsiveness, desiccation tolerance, seed longevity, oil accumulation, and circadian regulation.