Water stress (drought and waterlogging) is severe abiotic stress to plant growth and
development. Melatonin, a bioactive plant hormone, has been widely tested in drought
situations in diverse plant species, while few studies on the role of melatonin in waterlogging
stress conditions have been published. In the current review, we analyze the biostimulatory
functions of melatonin on plants under both drought and waterlogging stresses. Melatonin
controls the levels of reactive oxygen and nitrogen species and positively changes the …