Comparative effects of ascobin and glutathione on copper homeostasis and oxidative stress metabolism in mitigation of copper toxicity in rice

M. Tahjib‐Ul‐Arif; A. A. M. Sohag; M. G. Mostofa; M. A. S. Polash; A. G. M. S. U. Mahamud; S. Afrin; M. A. Hossain; Y. Murata; L.‐S. P. Tran

doi:10.1111/plb.13222

journal article Jan 07, 2021

Comparative effects of ascobin and glutathione on copper homeostasis and oxidative stress metabolism in mitigation of copper toxicity in rice

M. Tahjib‐Ul‐Arif A. A. M. Sohag M. G. Mostofa M. A. S. Polash A. G. M. S. U. Mahamud S. Afrin M. A. Hossain Y. Murata L.‐S. P. Tran

Plant Biology Vol. 23 No. S1 pp. 162-169 · Wiley

View at Publisher Save 10.1111/plb.13222

Abstract

Abstract

Copper (Cu) pollution of agricultural land is a major threat to crop production. Exogenous chemical treatment is an easily accessible and rapid approach to remediate metal toxicity, including Cu toxicity in plants.

We compared the effects of ascobin (ASC; ascorbic acid:citric acid at 2:1) and glutathione (GSH) in mitigation of Cu toxicity in rice.

Plants subjected to Cu stress displayed growth inhibition and biomass reduction, which were connected to reduced levels of chlorophylls, RWC, total phenolic compounds, carotenoids and Mg2+. Increased accumulation of ROS and malondialdehyde indicated oxidative stress in Cu‐stressed plants. However, application of ASC or GSH minimized the inhibitory effects of Cu stress on rice plants by restricting Cu2+ uptake and improving mineral balance, chlorophyll content and RWC. Both ASC and GSH pretreatments reduced levels of ROS and malondialdehyde and improved activities of antioxidant enzymes, suggesting their roles in alleviating oxidative damage. A comparison on the effects of ASC and GSH under Cu stress revealed that ASC was more effective in restricting Cu2+ accumulation (69.5% by ASC and 57.1% by GSH), Ca2+ and Mg2+ homeostasis, protection of photosynthetic pigments and activation of antioxidant defence mechanisms [catalase (110.4%), ascorbate peroxidase (76.5%) and guaiacol peroxidase (39.0%) by ASC, and catalase (58.9%) and ascorbate peroxidase (59.9%) by GSH] in rice than GSH, eventually resulting in better protection of ASC‐pretreated plants against Cu stress.

In conclusion, although ASC and GSH differed in induction of stress protective mechanisms, both were effective in improving rice performance in response to Cu phytotoxicity.

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References

Details

Published: Jan 07, 2021
Vol/Issue: 23(S1)
Pages: 162-169
License: View

Authors

M

M. Tahjib‐Ul‐Arif

Department of Biochemistry and Molecular Biology Bangladesh Agricultural University Mymensingh 2202 Bangladesh; Graduate School of Environmental and Life Science Okayama University Kita‐ku Okayama 700‐8530 Japan

A

A. A. M. Sohag

Department of Biochemistry and Molecular Biology Bangladesh Agricultural University Mymensingh 2202 Bangladesh

M

M. G. Mostofa

Department of Biochemistry and Molecular Biology Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur 1706 Bangladesh

M

M. A. S. Polash

Department of Crop Botany Khulna Agricultural University Khulna 9202 Bangladesh

A

A. G. M. S. U. Mahamud

School of Food Science and Engineering South China University of Technology Guangzhou 510641 China

S

S. Afrin

Graduate School of Environmental and Life Science Okayama University Kita‐ku Okayama 700‐8530 Japan

M

M. A. Hossain

Department of Crop Botany Bangladesh Agricultural University Mymensingh 2202 Bangladesh

Y

Y. Murata

Graduate School of Environmental and Life Science Okayama University Kita‐ku Okayama 700‐8530 Japan

L

L.‐S. P. Tran

Institute of Research and Development Duy Tan University Da Nang 550000 Vietnam; Stress Adaptation Research Unit RIKEN Center for Sustainable Resource Science Yokohama 230‐0045 Japan

Cite This Article

M. Tahjib‐Ul‐Arif, A. A. M. Sohag, M. G. Mostofa, et al. (2021). Comparative effects of ascobin and glutathione on copper homeostasis and oxidative stress metabolism in mitigation of copper toxicity in rice. Plant Biology, 23(S1), 162-169. https://doi.org/10.1111/plb.13222

Comparative effects of ascobin and glutathione on copper homeostasis and oxidative stress metabolism in mitigation of copper toxicity in rice

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