Hydrogen Sulfide Modulates Salinity Stress in Common Bean Plants by Maintaining Osmolytes and Regulating Nitric Oxide Levels and Antioxidant Enzyme Expression

The purpose of the present study is to investigate the role of hydrogen sulfide (H 2 S), in improving resistance to common bean salt stress. Method shows that common bean seeds were soaked in water and in two concentrations of sodium hydrosulfide (50 and 100 µM) for 8 h. After 25 days from sowing, t...

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Bibliographic Details
Published in:Journal of soil science and plant nutrition 2022-09, Vol.22 (3), p.3708-3726
Main Authors: Dawood, Mona F. A., Sofy, Mahmoud R., Mohamed, Heba I., Sofy, Ahmed R., Abdel-kader, Huwida A. A.
Format: Article
Language:English
Subjects:
Abiotic stress
Agriculture
Antioxidants
Ascorbic acid
Beans
Biomedical and Life Sciences
Catalase
Climate change
Copper
Damage prevention
Drinking water
Ecology
Electrolyte leakage
Electrolytes
Environment
Free radicals
Glutathione
Glutathione reductase
Glutathione transferase
Glycine
Glycine betaine
Homeostasis
Hydrogen
Hydrogen peroxide
Hydrogen sulfide
Hydroxyl radicals
L-Ascorbate peroxidase
Leaves
Life Sciences
Lipid peroxidation
Lipids
Loam soils
Nitrate reductase
Nitric oxide
Original Paper
Oxidative stress
Peroxidase
Peroxidation
Phaseolus vulgaris
Plant growth
Plant Sciences
Potassium
Reactive oxygen species
Reductases
Salinity
Salinity effects
Salinity tolerance
Salt
Salts
Seeds
Sodium
Sodium chloride
Soil Science & Conservation
Superoxide anions
Superoxide dismutase
Vegetables
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Summary:The purpose of the present study is to investigate the role of hydrogen sulfide (H 2 S), in improving resistance to common bean salt stress. Method shows that common bean seeds were soaked in water and in two concentrations of sodium hydrosulfide (50 and 100 µM) for 8 h. After 25 days from sowing, the pots were irrigated with water and with two concentrations of NaCl (75 and 150 mM) until the end of the experiment. Results revealed that H 2 S relieved salt stress by decreasing growth inhibition and photosynthetic characteristics, and increasing osmolyte contents (proline and glycine betaine). Furthermore, H 2 S reduced oxidative damage by lowering lipid peroxidation, electrolyte leakage, and reactive oxygen species production such as hydrogen peroxide, hydroxyl radicals, and superoxide anion by increasing non-enzymatic antioxidants such as ascorbic acid and glutathione, as well as enzymatic antioxidants such as superoxide dismutase (SOD), catalase (CAT), peroxidase (POX), ascorbate peroxidase (APX), glutathione reductase (GR), and nitrate reductase (NR). Meanwhile, salt stress and H 2 S application increased the endogenous level of H 2 S, which was accompanied by an increase in nitric oxide concentration. H 2 S, in particular, maintained sodium (Na + ) and potassium (K + ) homeostasis in the presence of excess NaCl. In general, H 2 S effectively reduced oxidative stress in common bean plants by increasing relative expression levels of copper-zinc superoxide dismutase ( Cu-ZnSOD ), CAT , and glutathione S-transferase ( GST ). Applying H 2 S to common bean plants could protect them from salinity stress by maintaining the Na + /K + balance, boosting endogenous H 2 S and nitric oxide levels, and preventing oxidative damage by increasing antioxidant activity.
ISSN:0718-9508
0718-9516
DOI:10.1007/s42729-022-00921-w