ABI5 — Pisum sativum

Summary

PsABI5 (PSAT3G033680) on garden pea chromosome 3LG5 encodes a bZIP transcription factor of the BZIP46-like family with DNA-binding transcription activator activity. The gene is associated with exit from dormancy, positive regulation of TOR signaling, and regulation of abscisic acid anabolism. It has been linked to numerous agronomic traits including seed set percent, endosperm storage protein content, vegetative to reproductive phase transition, whole plant size, leaf elongation rate, and responses to abiotic stresses such as salinity, aluminum, cadmium, and nutrient sensitivities. Additional associations include inflorescence length, lignin biosynthesis, plastid development, and resistance to wheat powdery mildew. The gene product localizes to chromatin, nuclear bodies, and the PP2A complex, and is associated with retrograde response and amino acid metabolic processes.