Exogenous salicylic acid ameliorates waterlogging stress damages and improves photosynthetic efficiency and antioxidative defense system in waxy corn

Salicylic acid (SA) is an endogenous growth regulator. It vital for the and development, photosynthesis, disease resistance, abiotic stress tolerance of plants. This study aimed to investigate effects exogenous SA on photosynthetic characteristics antioxidant system in four-leaf-stage waxy corn inbred seedlings SY-MY13 (waterlogging-resistant) SY-XT1 (waterlogging-sensitive) under waterlogging stress. Waterlogging negatively influenced morphology, plant height, biomass, characteristics, chlorophyll content seedlings, obstructing their development. exhibited better photosynthesis than waterlogging, this was due possessed excellent scavenging ability reactive oxygen species (ROS). However, application could not only reduce accumulation ROS regulate activities enzymes but also improve leaves promote seedlings. Hence, results revealed that potential as a promising regulator mediated physiological adaptation stress, which might prove helpful other plants suffering from