Xin Jin, Mengxiao Guo, Yuxing Li, Xuemei Zhang, Ji Liu, Xiaojun Jiang, Yan Chen, Lijin Lin
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Serotonin alleviates selenium stress and reduces selenium accumulation in Cyphomandra betacea seedlings.
To alleviate selenium (Se) stress, the effects of serotonin (SER, 150 μmol/L) on the growth and Se accumulation of Cyphomandra betacea seedlings under Se stress (1.0 mg/L) were assessed. The results indicated that SER increased the biomass and photosynthetic pigment content of C. betacea seedlings under Se stress, while reducing the antioxidant enzymes activities, root Se content, and shoot Se content. Compared with Se treatment, SER decreased the activities of superoxide dismutase (SOD) and peroxidase (POD) by 34.08% and 25.22%, respectively, and decreased the contents of root Se and shoot Se by 12.79% and 17.14%, respectively. Furthermore, correlation, principal component, and cluster analyses revealed that the root Se content, SOD activity, and POD activity were closely correlated with the shoot Se content. Therefore, SER can alleviate Se-induced toxicity, and inhibit the Se accumulation of C. betacea seedlings.
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.
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