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Ahmad P, Abdel Latef AA, Hashem A, et al. Nitric Oxide Mitigates Salt Stress by Regulating Levels of Osmolytes and Antioxidant Enzymes in Chickpea. Front Plant Sci. 2016;7:347doi: 10.3389/fpls.2016.00347.
Ahmad, P., Abdel Latef, A. A., Hashem, A., Abd Allah, E. F., Gucel, S., & Tran, L. S. (2016). Nitric Oxide Mitigates Salt Stress by Regulating Levels of Osmolytes and Antioxidant Enzymes in Chickpea. Frontiers in plant science, 7347. https://doi.org/10.3389/fpls.2016.00347
Ahmad, Parvaiz, et al. "Nitric Oxide Mitigates Salt Stress by Regulating Levels of Osmolytes and Antioxidant Enzymes in Chickpea." Frontiers in plant science vol. 7 (2016): 347. doi: https://doi.org/10.3389/fpls.2016.00347
Ahmad P, Abdel Latef AA, Hashem A, Abd Allah EF, Gucel S, Tran LS. Nitric Oxide Mitigates Salt Stress by Regulating Levels of Osmolytes and Antioxidant Enzymes in Chickpea. Front Plant Sci. 2016 Mar 31;7:347. doi: 10.3389/fpls.2016.00347. eCollection 2016. PMID: 27066020; PMCID: PMC4814448.
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Front Plant Sci. 2016 Mar 31;7:347. doi: 10.3389/fpls.2016.00347. eCollection 2016.

Nitric Oxide Mitigates Salt Stress by Regulating Levels of Osmolytes and Antioxidant Enzymes in Chickpea.

Frontiers in plant science

Parvaiz Ahmad, Arafat A Abdel Latef, Abeer Hashem, Elsayed F Abd Allah, Salih Gucel, Lam-Son P Tran

Affiliations

  1. Department of Botany, Sri Pratap College Srinagar, India.
  2. Botany Department, Faculty of Science, South Valley UniversityQena, Egypt; Biology Department, College of Applied Medical Sciences, Taif UniversityTurabah, Saudi Arabia.
  3. Mycology and Plant Disease Survey Department, Plant Pathology Research Institute, Agriculture Research CenterGiza, Egypt; Botany and Microbiology Department, College of Science, King Saud UniversityRiyadh, Saudi Arabia.
  4. Plant Production Department, College of Food and Agricultural Sciences, King Saud University Riyadh, Saudi Arabia.
  5. Centre for Environmental Research, Near East University Nicosia, Cyprus.
  6. Plant Abiotic Stress Research Group & Faculty of Applied Sciences, Ton Duc Thang UniversityHo Chi Minh City, Vietnam; Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource ScienceYokohama, Japan.

PMID: 27066020 PMCID: PMC4814448 DOI: 10.3389/fpls.2016.00347

Abstract

This work was designed to evaluate whether external application of nitric oxide (NO) in the form of its donor S-nitroso-N-acetylpenicillamine (SNAP) could mitigate the deleterious effects of NaCl stress on chickpea (Cicer arietinum L.) plants. SNAP (50 μM) was applied to chickpea plants grown under non-saline and saline conditions (50 and 100 mM NaCl). Salt stress inhibited growth and biomass yield, leaf relative water content (LRWC) and chlorophyll content of chickpea plants. High salinity increased electrolyte leakage, carotenoid content and the levels of osmolytes (proline, glycine betaine, soluble proteins and soluble sugars), hydrogen peroxide (H2O2) and malondialdehyde (MDA), as well as the activities of antioxidant enzymes, such as superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase in chickpea plants. Expression of the representative SOD, CAT and APX genes examined was also up-regulated in chickpea plants by salt stress. On the other hand, exogenous application of NO to salinized plants enhanced the growth parameters, LRWC, photosynthetic pigment production and levels of osmolytes, as well as the activities of examined antioxidant enzymes which is correlated with up-regulation of the examined SOD, CAT and APX genes, in comparison with plants treated with NaCl only. Furthermore, electrolyte leakage, H2O2 and MDA contents showed decline in salt-stressed plants supplemented with NO as compared with those in NaCl-treated plants alone. Thus, the exogenous application of NO protected chickpea plants against salt stress-induced oxidative damage by enhancing the biosyntheses of antioxidant enzymes, thereby improving plant growth under saline stress. Taken together, our results demonstrate that NO has capability to mitigate the adverse effects of high salinity on chickpea plants by improving LRWC, photosynthetic pigment biosyntheses, osmolyte accumulation and antioxidative defense system.

Keywords: antioxidant enzymes; chickpea; gene expression; nitric oxide; osmolytes; salt stress

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