AG — Solanum lycopersicum

Summary

SlAG (SOLYC07G055920.4) on tomato chromosome 7 encodes a MADS-box transcription factor, containing MADS-box and K-box domains, with DNA-binding transcription factor activity. SlAG is associated with fruit development, ripening, and expansion, as well as pericarp thickness and morphology. It is linked to carotenoid and lycopene accumulation, chlorophyll synthesis, chloroplast development, and cuticle formation. The gene is connected to ethylene biosynthesis, flavonoid biosynthesis, and lutein content. SlAG is also associated with flower development traits including sepal, petal, carpel, and stamen identity, floral organ size, and sex determination. Additional associations include grain size, heterosis, amino acid content, and responses to high light and UV-A. Studies of related genes in other species link it to floral meristem termination, reproductive organ identity, and seed traits.