Effects of uranium stress on physiological and biochemical characteristics in seedlings of six common edible vegetables |
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Authors: | Jing Hou Chunjie Wang Yue Zhou Shiguo Li Tasawar Hayat Ahmed Alsaedi Xiangke Wang |
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Affiliation: | 1.College of Environmental Science and Engineering,North China Electric Power University,Beijing,China;2.Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing,China;3.NAAM Research Group, Faculty of Science,King Abdulaziz University,Jeddah,Saudi Arabia |
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Abstract: | The large-scale exploitation of uranium (U) not only causes radioactive pollution to the soil, but also has a great adverse effect on human health. However, the current understanding of the effects of U stress on organisms is not deep enough. As food sources of human beings, vegetables can enrich U into the human body along the food chain. Therefore, the effects of soil U on seed germination, seedling growth and physiological and biochemical characteristics of six common edible vegetables (tomato, cucumber, kohlrabi, radish, cabbage, and spinach) were investigated. The results show that the toxicity of U to the six vegetables in sandy loam is cucumber?>?radish?>?spinach?>?cabbage?>?tomato?>?kohlrabi. The lower U concentration in sandy loam has certain promoting effect on seed germination and root growth. The accumulation and tolerance capacity of cucumber and radish to U in sandy loam is stronger than that of other four vegetables, which may be used as candidate species for biological treatment of U pollution. These results provide theoretical basis for clarifying the biological effects and toxicological mechanism of U pollution, and also provide theoretical basis for scientific prevention and control of soil U pollution. |
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