Rashad Mukhtar Balal, Muhammad Tauseef Jaffar, Syed Ayyaz Javed, Muhammad Zubair, Muhammad Ajmal Farhad, Hafiz Wasif Javaad, Muhammad Adnan Shahid, Waleed A A Alsakkaf, Hayssam M Ali
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引用次数: 0
Abstract
Nickel (Ni) toxicity can disorder plant growth and development, while silicon (Si) is important element in ameliorating heavy metal stress. This study investigated the effect of exogenous application of Si (2 mM) on cabbage plants exposed to Ni (0.5 mM and 1 mM). The impacts of exogenous Si application on root morphology, enzymatic activities, proline and glycine betaine (GB) accumulation, reactive oxygen species (ROS), and other physiological parameters of cabbage plants grown under Ni stress were observed. Exogenous Si mitigated the irreversible damage caused by Ni by improving root morphology, enhancing plant enzymatic activities, regulating osmoprotectants (proline and glycine betaine), modulating ROC ( and H2O2), and supporting overall plant physiology. Furthermore, Si reduced Ni content by 67% and 72% in roots and leaves, respectively, and improved the nutrients (Si, N, P, and K) upregulation under Ni stress while reducing oxidative stress. The overall findings suggest that foliar application of 2 mM Si can enhance root morphology, regulate nutrient uptake, and play a crucial role in reducing Ni accumulation. This effect is primarily attributed to its contribution to strengthening plant defense mechanisms against oxidative damage and regulating osmoregulation, thereby alleviating Ni-induced stress and promoting plant growth.
期刊介绍:
The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.