Abstract
Soil salinity is one of the important environmental factors that produce serious agricultural problems. The objective of the present study was to determine the interactive effect of salicylic acid (SA) and calcium (Ca) on plant growth, photosynthetic pigments, proline (Pro) concentration, carbonic anhydrase (CA) activity and activities of antioxidant enzymes of Triticum aestivum L. (cv. Samma) under salt stress. Application of 90 mM of NaCl reduced plant growth (plant height, fresh weight (FW) and dry weight (DW), chlorophyll (Chl) a, Chl b, CA activity) and enhanced malondialdehyde (MDA) and Pro concentration. However, the application of SA or Ca alone as well as in combination markedly improved plant growth, photosynthetic pigments, Pro concentration, CA activity and activities of antioxidant enzymes peroxidase (POD), catalase (CAT), superoxide dismutase (SOD), glutathione reductase (GR) and ascorbate peroxidase (APX) under salt stress. It was, therefore, concluded that application of SA and Ca alone as well as in combination ameliorated the adverse effect of salinity, while combined application proved more effective to reduce the oxidative stress generated by NaCl through reduced MDA accumulation, Chl a/b ratio and Chls degradation and enhanced activities of antioxidant enzymes.
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Abbreviations
- FW:
-
Fresh weight
- DW:
-
Dry weight
- Chl:
-
Chlorophyll
- Pro:
-
Proline
- MDA:
-
Malondialdehyde
- CA:
-
Carbonic anhydrase
- CAT:
-
Catalase
- POD:
-
Peroxidase
- SOD:
-
Superoxide dismutase
- GR:
-
Glutathione reductase
- APX:
-
Ascorbate peroxidase
- EDTA:
-
Ethylenediaminetetraacetic acid
- NBT:
-
Nitro blue tetrazolium
- NADPH:
-
Nicotinamide adenine dinucleotide phosphate-oxidase
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Acknowledgements
We thank Professor Firoz Mohammad (Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh) and the anonymous reviewers for their valuable suggestions and critical reading of the manuscript. The financial support by the Deanship of Scientific Research of King Saud University, Riyadh, KSA though the Research Group No. RGP-VPP-153 is gratefully acknowledged.
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The authors declare that they have no conflict of interest.
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Al-Whaibi, M.H., Siddiqui, M.H. & Basalah, M.O. Salicylic acid and calcium-induced protection of wheat against salinity. Protoplasma 249, 769–778 (2012). https://doi.org/10.1007/s00709-011-0322-1
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DOI: https://doi.org/10.1007/s00709-011-0322-1