Related Experiment Video
Updated: Sep 21, 2025

Real-Time Detection of Reactive Oxygen Species Production in Immune Response in Rice with a Chemiluminescence Assay
Published on: November 25, 2022
Melatonin mediates reactive oxygen species homeostasis via SlCV to regulate leaf senescence in tomato plants
Jun-Chi Yu1,2, Jia-Zhi Lu1,2, Xiao-Yu Cui1,2
1College of Horticulture, Shenyang Agricultural University, Shenyang, People's Republic of China.
Abstract:
Melatonin (MT) functions in removing reactive oxygen species (ROS) and delaying plant senescence, thereby acting as an antioxidant; however, the molecular mechanism underlying the specific action of MT is unclear. Herein, we used the mutant plants carrying the MT decomposition gene melatonin 3-hydroxylase (M3H) in tomato to elucidate the specific mechanism of action of MT. SlM3H-OE accelerated senescence by decreasing the content of endogenous MT in plants. SlM3H is a senescence-related gene that positively regulates aging. MT inhibited the expression of the senescence-related gene SlCV to scavenge ROS, induced stable chloroplast structure, and delayed leaf senescence. Simultaneously, MT weakened the interaction between SlCV and SlPsbO/SlCAT3, reduced ROS production in photosystem II, and promoted ROS elimination. In conclusion, MT regulates ROS homeostasis and delays leaf aging in tomato plants through SlCV expression modulation.
More Related Videos
12:07Profiling Thiol Redox Proteome Using Isotope Tagging Mass Spectrometry
Published on: March 24, 2012
13:59A Quantitative Measurement of Reactive Oxygen Species and Senescence-associated Secretory Phenotype in Normal Human Fibroblasts During Oncogene-induced Senescence
Published on: August 12, 2018
Related Concept Videos
Biological Clocks and Seasonal Responses
Cell Signaling in Plants
Photoreceptors and Plant Responses to Light
Regulation of Transpiration by Stomata
Key Elements for Plant Nutrition
Adaptations that Reduce Water Loss