ATM4 — Lactuca sativa

Summary

LsATM4, also known as LsMYB32 or LsMYB76, is a garden lettuce gene on chromosome 9 that encodes a protein with a Myb domain and SANT/Myb domain, possessing DNA-binding transcription factor activity, sequence-specific DNA binding, and protein dimerization activity. The gene is associated with the regulation of flavonoid and anthocyanin biosynthesis, proanthocyanidin metabolism, glucosinolate biosynthetic processes, and raffinose metabolic processes. It has been linked to trichome morphogenesis and spacing, plant epidermal cell fate specification, defense responses to insects, drought recovery, and cellular detoxification of cadmium ions. Additional associations include root hair localization, shoot elongation under submergence, leaf trichome density, seed protein content, phosphorus response, iron concentration, and photoperiod-sensitive flowering time. Studies of related genes in other species link the family to cuticle deposition, suberin synthesis, and drought response.