AS2 — Asparagus officinalis

Summary

A4U43_C01F26760 (AoAS2) on asparagus chromosome 1 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 adaxial/abaxial and proximodistal axes, organ boundary specification, leaf formation, cotyledon morphogenesis, photomorphogenesis, vernalization response, endosperm development, and innate immune regulation. The gene is linked to leaf flexibility, margin serration, area, trichome density, water potential, petal color and size, flower abscission, pedicel length, sepal and silique morphology, brassinosteroid and oleic acid content, selenium and sulfur content, potassium sensitivity, nitrate transport, male sterility, stamen morphology, shoot meristem development, and vegetative-to-reproductive phase transition. Studies of related genes in other species connect the family to leaf morphogenesis, gynoecium and fruit patterning, seed oil accumulation, viral and fungal resistance, and H3K27me3 modification.