ASMT — Cucumis sativus

Summary

CsASMT (CSA_7G018720) on cucumber chromosome 7 encodes an O-methyltransferase. It exhibits acetylserotonin O-methyltransferase activity, naringenin 7-O-methyltransferase activity, and (RS)-norcoclaurine 6-O-methyltransferase activity. The gene is associated with photoprotection, regulation of stomatal closure, leaf senescence, seed germination, and circadian rhythm. It has been connected to stem diameter and net photosynthetic rate, as well as melatonin synthesis and high light stress tolerance. The protein localises to the cytosol, cytoplasm, and nucleus. Studies of related genes in other species link the family to drought tolerance, chilling tolerance, disease resistance, and oxidative stress tolerance, though these associations are not yet established in cucumber.