Abstract
The accumulation of cadmium (Cd) in wheat seedlings under single and joint stress of galaxolide (HHCB) and Cd was investigated, and their phytotoxicity and oxidation stress including chlorophyll (CHL), malondialdehyde (MDA), superoxide dismutase, and perosidase were assessed. The results showed that the accumulation of Cd in wheat seedlings increased with an increase in the concentration of Cd in soil. The low concentration of HHCB inhibited the accumulation of Cd, while the high concentration of HHCB induced the accumulation of Cd. The content of CHL increased significantly in treatments with 1–50 mg kg−1 Cd. However, the content of CHL under joint stress of Cd and HHCB was significantly lower than that in the control. Besides, the content of MDA in wheat leaves and roots was also significantly affected by HHCB and Cd, particularly by their joint stress. Co-contamination of HHCB significantly affected the activity of antioxidant enzymes in wheat seedlings stressed by Cd. In a word, HHCB could aggravate the phytotoxicity of Cd to wheat seedlings.
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The authors acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 21207068 and 21037002).
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Chen, C., Zhou, Q. & Cai, Z. Effect of soil HHCB on cadmium accumulation and phytotoxicity in wheat seedlings. Ecotoxicology 23, 1996–2004 (2014). https://doi.org/10.1007/s10646-014-1317-4
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DOI: https://doi.org/10.1007/s10646-014-1317-4