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- W4313731300 abstract "Mercury (Hg) is one of the most dangerous pollutant heavy metals to the environment, which causes several toxic effects in plants upon accumulation, such as induction of oxidative stress. Nitrate (NO3) is the prevalent form to incorporate nitrogen (N) in higher plants, through its reduction to nitrite (NO2) by the enzyme nitrate reductase (NR). We studied the physiological alterations caused by Hg (0, 6 and 30 µM) in alfalfa plants grown at two different levels of NO3: low, (2 mM; LN), and high (12 mM; HN) for one week using a semi-hydroponic culture system. Several parameters of oxidative stress such as lipid peroxidation, chlorophyll content, biothiol concentration, and ascorbate peroxidase (APX) and glutathione reductase (GR) activities showed that HN plants were less affected by Hg. Nitrate reductase activity and NO3 concentration were also altered under Hg stress, with lower impact in plants nourished with high NO3. Our results highlight the importance of the NO3 nutritional status to improve tolerance to toxic metals like Hg." @default.
- W4313731300 created "2023-01-08" @default.
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- W4313731300 date "2023-03-01" @default.
- W4313731300 modified "2023-10-14" @default.
- W4313731300 title "Attenuation of mercury phytotoxicity with a high nutritional level of nitrate in alfalfa plants grown hydroponically" @default.
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- W4313731300 doi "https://doi.org/10.1016/j.stress.2023.100131" @default.
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