Abstract
Phthalic acid esters (PAEs) are one kind of persistent organic pollutants. This study was conducted to investigate the effects of diethylphthalate (DEP) and di(2-ethyl)hexylphthalate (DEHP) with different concentrations (0, 30, 50, 100, and 200 mg L−1) on early seedling growth of Cucumis sativus L. Physiological, biochemical, and ultrastructure of seedling leaves were examined for 7-day exposure. The three antioxidant enzymes’ activities was stimulated at low-DEP treatments and decreased under higher levels (>200 mg L−1) compared to the controls. Furthermore, MDA and H2O2 gradually enhanced with the elevation of DEP and DEHP concentration. Significant impact on the chloroplast and mitochondrion was visible, possibly as a consequence of free radical generation. DEP induced bigger and more starch grains in chloroplasts than DEHP. This study concluded that the effects of DEP and DEHP on cucumber seedlings represented the adverse impacts of DEP and DEHP on the ecosystem and agricultural production. The environmental harm caused by DEP was severer than DEHP.





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Discover the latest articles and news from researchers in related subjects, suggested using machine learning.Abbreviations
- PAEs:
-
Phthalic esters
- DEP:
-
Diethylphthalate
- DEHP:
-
Di(2-ethyl)hexylphthalate
- SOD:
-
Superoxide
- POD:
-
Peroxidase
- CAT:
-
Catalase
- MDA:
-
Malondialdehyde
- H2O2 :
-
Hydrogen peroxide
- PBS:
-
Phosphate-buffered saline solution
- ROS:
-
Reactive oxygen species
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Acknowledgments
This research was supported by the National High Technology Research and 863 Development Program of China (2012AA101405-2), Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (QAK201013), Chang Jiang Scholar Candidates Program for Provincial Universities in Heilongjiang (2012CJHB001), New Century Excellent Talents in University (NCET-10-0145), Heilongjiang Postdoctoral Fund (LBH-Z12037), and the National Natural Science Foundation of China (31200390).
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Zhang, Y., Wang, L., Du, N. et al. Effects of diethylphthalate and di-(2-ethyl)hexylphthalate on the physiology and ultrastructure of cucumber seedlings. Environ Sci Pollut Res 21, 1020–1028 (2014). https://doi.org/10.1007/s11356-013-1884-6
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DOI: https://doi.org/10.1007/s11356-013-1884-6


