Interactive effects of aluminum and cadmium on phenolic compounds, antioxidant enzyme activity and oxidative stress in blueberry (Vaccinium corymbosum L.) plantlets cultivated in vitro

Ecotoxicology and Environmental Safety
K Manquián-CerdaR Calderón

Abstract

To evaluate the potential role of phenolic compounds in Al and Cd stress tolerance mechanisms, Vaccinium corymbosum cv. Legacy plantlets were exposed to different metal concentrations. The present study used an in vitro plant model to test the effects of the following treatments: 100μM Al; 100μMAl + 50μMCd; and 100μMAl + 100μMCd during periods of 7, 14, 21 and 30 days. The oxidative damage was determined by the accumulation of malondialdehyde (MDA) and hydrogen peroxide (H2O2). The antioxidant activity values were determined using 1,1-diphenyl-2-picrylhydrazine (DPPH) and the ferric reducing antioxidant power test (FRAP). Additionally, the phenolic compound concentrations were determined using HPLC-DAD. The exposure to Al and Cd increased the MDA and H2O2 contents differentially, while the antioxidant capacity values showed differences between DPPH and FRAP with the largest changes in FRAP relative to Cd. SOD had the highest activity in the first 7 days, leading to a significant increase in phenolic compounds observed after 14 days, and chlorogenic acid was the major compound identified. Our results revealed that phenolic compounds seem to play an important role in the response to ROS. Therefore, the mechanisms of tolerance to ...Continue Reading

Citations

Aug 18, 2020·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Elham Mohajel KazemiAndrea Goldson-Barnaby
Jun 7, 2019·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Sameer Suresh BhagyawantNidhi Srivastava
May 3, 2019·Protoplasma·Ewa MuszyńskaMagdalena Bederska-Błaszczyk
Aug 25, 2018·Chemosphere·Mirosław MleczekPrzemysław Niedzielski
Jan 18, 2020·Ecotoxicology and Environmental Safety·Analía VazquezMaría Patricia Benavides
Oct 30, 2021·Biological Trace Element Research·Marta Kandziora-CiupaAleksandra Nadgórska-Socha

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