Nickel Toxicity Interferes with NO3−/NH4+ Uptake and Nitrogen Metabolic Enzyme Activity in Rice (Oryza sativa L.)
Author | Rizwan, Muhammad |
Author | Usman, Kamal |
Author | Alsafran, Mohammed |
Author | Al Jabri, Hareb |
Author | Samreen, Tayyaba |
Author | Saleem, Muhammad Hamzah |
Author | Tu, Shuxin |
Available date | 2022-08-31T04:44:46Z |
Publication Date | 2022-06-01 |
Publication Name | Plants |
Identifier | http://dx.doi.org/10.3390/plants11111401 |
Citation | Rizwan, M.; Usman, K.; Alsafran, M.; Jabri, H.A.; Samreen, T.; Saleem, M.H.; Tu, S. Nickel Toxicity Interferes with NO3−/NH4+ Uptake and Nitrogen Metabolic Enzyme Activity in Rice (Oryza sativa L.). Plants 2022, 11, 1401. https://doi.org/10.3390/plants11111401 |
Abstract | The excessive use of nickel (Ni) in manufacturing and various industries has made Ni a serious pollutant in the past few decades. As a micronutrient, Ni is crucial for plant growth at low concentrations, but at higher concentrations, it can hamper growth. We evaluated the effects of Ni concentrations on nitrate (NO3−) and ammonium (NH4+) concentrations, and nitrogen metabolism enzyme activity in rice seedlings grown in hydroponic systems, using different Ni concentrations. A Ni concentration of 200 µM significantly decreased the NO3− concentration in rice leaves, as well as the activities of nitrate reductase (NR), nitrite reductase (NiR), glutamine synthetase (GS), and glutamate synthetase (GOGAT), respectively, when compared to the control. By contrast, the NH4 + concentration and glutamate dehydrogenase (GDH) activity both increased markedly by 48% and 46%, respectively, compared with the control. Furthermore, the activity of most active aminotransferases, including glutamic pyruvic transaminase (GPT) and glutamic oxaloacetic transaminase (GOT), was inhibited by 48% and 36%, respectively, in comparison with the control. The results indicate that Ni toxicity causes the enzymes involved in N assimilation to desynchronize, ultimately negatively impacting the overall plant growth. |
Sponsor | This research was supported in part by National Key Research and Development Program (2018YFC1800305), Guangxi Major Special Project of Science and Technique (AA17202026-3), Hubei Special Project for Technique Innovation (2017ABA154), and Qatar University’s Vegetable Factory Project (QUEX–CAS–MJF–VF–18/19) |
Language | en |
Publisher | MDPI |
Subject | metabolism nickel nitrogen rice stress |
Type | Article |
Issue Number | 11 |
Volume Number | 11 |
ESSN | 2223-7747 |
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Biological & Environmental Sciences [876 items ]
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Research of Agricultural Research Station [50 items ]