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Article

Supplemental Selenium and Boron Mitigate Salt-Induced Oxidative Damages in Glycine max L.

1
Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh
2
Department of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh
3
Laboratory of Plant Stress Responses, Faculty of Agriculture, Kagawa University, Miki-cho, Kita-gun, Kagawa 761-0795, Japan
*
Authors to whom correspondence should be addressed.
Academic Editors: Magda Pál and Fabrizio Araniti
Plants 2021, 10(10), 2224; https://doi.org/10.3390/plants10102224
Received: 26 September 2021 / Revised: 15 October 2021 / Accepted: 18 October 2021 / Published: 19 October 2021
(This article belongs to the Special Issue Plant Oxidative Stress: Biology, Physiology and Mitigation)
The present investigation was executed with an aim to evaluate the role of exogenous selenium (Se) and boron (B) in mitigating different levels of salt stress by enhancing the reactive oxygen species (ROS) scavenging, antioxidant defense and glyoxalase systems in soybean. Plants were treated with 0, 150, 300 and 450 mM NaCl at 20 days after sowing (DAS). Foliar application of Se (50 µM Na2SeO4) and B (1 mM H3BO3) was accomplished individually and in combined (Se+B) at three-day intervals, at 16, 20, 24 and 28 DAS under non-saline and saline conditions. Salt stress adversely affected the growth parameters. In salt-treated plants, proline content and oxidative stress indicators such as malondialdehyde (MDA) content and hydrogen peroxide (H2O2) content were increased with the increment of salt concentration but the relative water content decreased. Due to salt stress catalase (CAT), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), glyoxalase I (Gly I) and glyoxalase II (Gly II) activity decreased. However, the activity of ascorbate peroxidase (APX), glutathione reductase (GR), glutathione peroxidase (GPX), glutathione S-transferase (GST) and peroxidase (POD) increased under salt stress. On the contrary, supplementation of Se, B and Se+B enhanced the activities of APX, MDHAR, DHAR, GR, CAT, GPX, GST, POD, Gly I and Gly II which consequently diminished the H2O2 content and MDA content under salt stress, and also improved the growth parameters. The results reflected that exogenous Se, B and Se+B enhanced the enzymatic activity of the antioxidant defense system as well as the glyoxalase systems under different levels of salt stress, ultimately alleviated the salt-induced oxidative stress, among them Se+B was more effective than a single treatment. View Full-Text
Keywords: abiotic stress; AsA-GSH pathway; methylglyoxal; micronutrient; osmoregulation; reactive oxygen species; trace elements abiotic stress; AsA-GSH pathway; methylglyoxal; micronutrient; osmoregulation; reactive oxygen species; trace elements
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MDPI and ACS Style

Rahman, M.; Rahman, K.; Sathi, K.S.; Alam, M.M.; Nahar, K.; Fujita, M.; Hasanuzzaman, M. Supplemental Selenium and Boron Mitigate Salt-Induced Oxidative Damages in Glycine max L. Plants 2021, 10, 2224. https://doi.org/10.3390/plants10102224

AMA Style

Rahman M, Rahman K, Sathi KS, Alam MM, Nahar K, Fujita M, Hasanuzzaman M. Supplemental Selenium and Boron Mitigate Salt-Induced Oxidative Damages in Glycine max L. Plants. 2021; 10(10):2224. https://doi.org/10.3390/plants10102224

Chicago/Turabian Style

Rahman, Mira, Khussboo Rahman, Khadeja Sultana Sathi, Md. Mahabub Alam, Kamrun Nahar, Masayuki Fujita, and Mirza Hasanuzzaman. 2021. "Supplemental Selenium and Boron Mitigate Salt-Induced Oxidative Damages in Glycine max L." Plants 10, no. 10: 2224. https://doi.org/10.3390/plants10102224

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