Exogenous melatonin ameliorates salinity-induced oxidative stress and improves photosynthetic capacity in sweet corn seedlings

Melatonin (MT) is involved in physiological processes plants under abiotic stress. In this study, we investigated the effects of melatonin on maize photosynthetic and antioxidant capacities salinity Our findings indicated stress significantly inhibited growth. However, exogenous MT promoted growth capacity. Superoxide dismutase, peroxidase, catalase increased by 138.8, 38.7, 32.0%, respectively, while H2O2 malondialdehyde decreased 23 31%, respectively. Exogenous also improved photosynthesis Net rate, transpiration stomatal conductance 134, 67.2, 46.3%, Maximum quantum yield PSII photochemistry, effective photochemical quenching coefficient, electron transport rate 5.8, 70.4, 65.3, 41.0%, Therefore, our suggested ameliorated adaptation stress, thereby providing helpful guidance for cultivation areas high salinity.