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- W2023191136 abstract "To investigate the influence of selenium on mercury phytotoxicity, the levels of selenium and mercury were analyzed with inductively coupled plasma-mass spectrometry (ICP-MS) in garlic tissues upon exposure to different dosages of inorganic mercury (Hg2+) and selenite (SeO32−) or selenate (SeO42−). The distributions of selenium and mercury were examined with micro-synchrotron radiation X-ray fluorescence (μ-SRXRF), and the mercury speciation was investigated with micro-X-ray absorption near edge structure (μ-XANES). The results show that Se at higher exposure levels (>1 mg/L of SeO32− or SeO42−) would significantly inhibit the absorption and transportation of Hg when Hg2+ levels are higher than 1 mg/L in culture media. SeO32− and SeO42− were found to be equally effective in reducing Hg accumulation in garlic. The inhibition of Hg uptake by Se correlates well with the influence of Se on Hg phytotoxicity as indicated by the growth inhibition factor. Elemental imaging using μ-SRXRF also shows that Se could inhibit the accumulation and translocation of Hg in garlic. μ-XANES analysis shows that Hg is mainly present in the forms of Hg–S bonding as Hg(GSH)2 and Hg(Met)2. Se exposure elicited decrease of Hg–S bonding in the form of Hg(GSH)2, together with Se-mediated alteration of Hg absorption, transportation and accumulation, may account for attenuated Hg phytotoxicity by Se in garlic." @default.
- W2023191136 created "2016-06-24" @default.
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- W2023191136 date "2013-08-01" @default.
- W2023191136 modified "2023-10-14" @default.
- W2023191136 title "Selenium inhibits the phytotoxicity of mercury in garlic (Allium sativum)" @default.
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- W2023191136 doi "https://doi.org/10.1016/j.envres.2013.01.010" @default.
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