| Literature DB >> 34282979 |
Samia Faiz1, Nasim Ahmad Yasin2, Waheed Ullah Khan3, Anis Ali Shah4, Waheed Akram5, Aqeel Ahmad5, Aamir Ali1, Naima Huma Naveed1, Luqman Riaz6.
Abstract
During the current study, the effects of magnesium oxide nanoparticles (5 mmol/L) were observed on the growth and mineral nutrients of Daucus carota under lead (Pb) stress. The results demonstrated that Pb stress decreased the growth and photosynthetic rate of D. carota plants. Furthermore, Pb stressed plants showed decreased uptake of mineral nutrients including Zn, Na, Fe, K, Ca, Mg, K, and Cu. Similarly, Pb stressed plants showed enhanced electrolyte leakage (EL) and malondialdehyde (MDA) content. However, magnesium oxide nanoparticles detoxified ROS to mitigate Pb stress and improved the growth of plants. Magnesium oxide nanoparticles also escalated the activity of antioxidant enzymes including superoxide dismutase (SOD) and Catalase (CAT). A higher amount of Pb content was observed in the roots as compared to the shoot of plants. Lead toxicity reduced manganese accumulation in D. carota plants. The increased concentration of iron, manganese, copper, and zinc advocates stress the ameliorative role of Pb stress in plants. Novelty statementThe role of MgONPs in the alleviation of Pb-toxicity in Daucus carota has never been exploited. In addition, the potential of MgONPs to enhance nutritional content in D. carota via modulation in antioxidant system and polyamines have never been reported.Entities:
Keywords: Antioxidant; carrot; nanoparticles; stress
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Year: 2021 PMID: 34282979 DOI: 10.1080/15226514.2021.1949263
Source DB: PubMed Journal: Int J Phytoremediation ISSN: 1522-6514 Impact factor: 3.212