AS2 — Asparagus officinalis

Summary

AoAS2 (A4U43_C04F28740) on asparagus chromosome 4 encodes a LOB domain-containing protein with DNA-binding transcription factor activity, histone H3K27 trimethylase activity, and transcription corepressor binding. It is associated with specification of symmetry, adaxial/abaxial axis polarity, proximodistal axis specification, organ boundary specification between lateral organs and the meristem, leaf formation, cotyledon morphogenesis, positive regulation of photomorphogenesis, vernalization response, endosperm development and epigenetic programming, and regulation of innate immune response. The gene is linked to traits including leaf flexibility, leaf area, leaf margin serration, petal color and size, flower abscission zone morphology, pedicel length, selenium and sulfur content, brassinosteroid and oleic acid content, nitrate transport, and plant male sterility. Studies of related genes in other species connect the family to leaf morphogenesis, gynoecium and fruit patterning, seed oil accumulation, viral disease resistance, and H3K27me3 histone modification.