Photosynthetic machinery and antioxidant enzymes system regulation confers cadmium stress tolerance to tomato seedlings pretreated with melatonin
SCIENTIA HORTICULTURAE(2024)
摘要
Cadmium (Cd), a significant heavy metal, is widely distributed in the Earth's crust. However, little is known about its effects on plants and management measured. Melatonin (MEL) is a well-known multifunctional biomolecule; it is a powerful antioxidant molecule that increases a plant's abiotic stress tolerance. MEL enhances nickel, vanadium, and chromium tolerance in plants. This research aimed to examine the impact of Cd-stress on tomato plants and explore the possible contribution of MEL in improving the resistance of tomato plants towards Cd-stress. The current findings exhibited that MEL application significantly enhanced leaf photosynthesis, root structure, osmolytes accumulation, and seedling growth compared with only Cd treatment. MEL application decreased Cd transport from root to shoot, lowering Cd concentrations in leaves. In addition, MEL treatment increased catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX), and glutathione reductase (GR) activity and decreased the level of hydrogen peroxide (H2O2), superoxide ion (O-2(center dot-)) and malondialdehyde (MDA) in tomato plants. Considering findings, MEL may be used to increase plant growth and Cd stress tolerance while lowering the availability of Cd to plants.
更多查看译文
关键词
Cadmium,Tomato,Antioxidant,Photosynthesis,Oxidative damage
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要