ATR2 — Solanum lycopersicum

Summary

SlATR2, also known as SlMYC2, SlJAI1, and JAMYC2, is a tomato gene on chromosome 8 that encodes a basic helix-loop-helix (bHLH) transcription factor of the AIB/MYC-like family, with annotated molecular functions including RNA polymerase II cis-regulatory region sequence-specific DNA binding, transcription corepressor and coactivator activities, and SUMO transferase activity. In tomato, SlATR2 is associated with saline-alkali tolerance, chilling tolerance, resistance to Botrytis cinerea, nematode susceptibility, seed maturation, seedling growth, and fruit quality. It is linked to processes such as pigment accumulation, regulation of flavonoid and glucosinolate biosynthesis, chemotropism, phloem loading, and the mevalonate pathway. The gene is also associated with traits including anther and petal length, seed protein content, hydrogen peroxide levels, and submergence tolerance. Related genes in other species are linked to drought tolerance, circadian rhythm, and resistance to herbivory and bacterial pathogens.