scholarly journals Influence of Exogenous Salicylic Acid and Nitric Oxide on Growth, Photosynthesis, and Ascorbate-Glutathione Cycle in Salt Stressed Vigna angularis

Biomolecules ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 42 ◽  
Author(s):  
Mohammad Abass Ahanger ◽  
Usman Aziz ◽  
Abdulaziz Abdullah Alsahli ◽  
Mohammed Nasser Alyemeni ◽  
Parvaiz Ahmad
Keyword(s):  
Nitric Oxide ◽  
Salicylic Acid ◽  
Oxidative Damage ◽  
Water Content ◽  
Salinity Stress ◽  
Nacl Stress ◽  
Photosynthetic Parameters ◽  
Enzymatic Antioxidants ◽  
Vigna Angularis ◽  
Exogenous Application

The present study was carried out to investigate the beneficial role of exogenous application of salicylic acid (1 mM SA) and nitric oxide (100 μM NO) in preventing the oxidative damage in Vigna angularis triggered by salinity stress. Salinity (100 mM NaCl) stress reduced growth, biomass accumulation, chlorophyll synthesis, photosynthesis, gas exchange parameters, and photochemical efficiency (Fv/Fm) significantly. Exogenous application of SA and NO was affective in enhancing these growth and photosynthetic parameters. Salinity stress reduced relative water content over control. Further, the application of SA and NO enhanced the synthesis of proline, glycine betaine, and sugars as compared to the control as well as NaCl treated plants contributing to the maintenance of tissue water content. Exogenous application of SA and NO resulted in up-regulation of the antioxidant system. Activities of enzymatic antioxidants including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), dehydroascorbate reductase (DHAR), and glutathione reductase (GR), as well as the content of non-enzymatic components, were more in SA + NO treated seedlings as compared to control and salinity stressed counterparts resulting in significant alleviation of the NaCl mediated oxidative damage. Content of nitrogen, potassium, and calcium increased due to SA and NO under normal conditions and NaCl stress conditions while as Na and Cl content reduced significantly.

scholarly journals Exogenous Nitric Oxide Reinforces Photosynthetic Efficiency, Osmolyte, Mineral Uptake, Antioxidant, Expression of Stress-Responsive Genes and Ameliorates the Effects of Salinity Stress in Wheat

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1693
Author(s):  
Ghalia S. H. Alnusairi ◽  
Yasser S. A. Mazrou ◽  
Sameer H. Qari ◽  
Amr A. Elkelish ◽  
Mona H. Soliman ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Oxidative Damage ◽  
Salinity Stress ◽  
Antioxidant System ◽  
Photosynthetic Efficiency ◽  
Growth Parameters ◽  
Soluble Sugars ◽  
Mineral Elements ◽  
Protective Mechanisms ◽  
Concomitant Reduction

Salinity stress is one of the major environmental constraints responsible for a reduction in agricultural productivity. This study investigated the effect of exogenously applied nitric oxide (NO) (50 μM and 100 μM) in protecting wheat plants from NaCl-induced oxidative damage by modulating protective mechanisms, including osmolyte accumulation and the antioxidant system. Exogenously sourced NO proved effective in ameliorating the deleterious effects of salinity on the growth parameters studied. NO was beneficial in improving the photosynthetic efficiency, stomatal conductance, and chlorophyll content in normal and NaCl-treated wheat plants. Moreover, NO-treated plants maintained a greater accumulation of proline and soluble sugars, leading to higher relative water content maintenance. Exogenous-sourced NO at both concentrations up-regulated the antioxidant system for averting the NaCl-mediated oxidative damage on membranes. The activity of antioxidant enzymes increased the protection of membrane structural and functional integrity and photosynthetic efficiency. NO application imparted a marked effect on uptake of key mineral elements such as nitrogen (N), potassium (K), and calcium (Ca) with a concomitant reduction in the deleterious ions such as Na+. Greater K and reduced Na uptake in NO-treated plants lead to a considerable decline in the Na/K ratio. Enhancing of salt tolerance by NO was concomitant with an obvious down-regulation in the relative expression of SOS1, NHX1, AQP, and OSM-34, while D2-protein was up-regulated.

Effects of exogenous salicylic acid and nitric oxide on growth, photosynthesis, and ion distribution in tomato seedlings under NaCl stress

2014 ◽  
Vol 34 (13) ◽  
Author(s):  
孙德智 SUN Dezhi ◽  
杨恒山 YANG Hengshan ◽  
彭靖 PENG Jing ◽  
范富 FAN Fu ◽  
马玉露 MA Yulu ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Salicylic Acid ◽  
Nacl Stress ◽  
Ion Distribution ◽  
Tomato Seedlings ◽  
Exogenous Salicylic Acid

scholarly journals Salinity Stress Mitigation by Foliar Feeding of Salicylic Acid on Maize (Zea Mays L.) grown under Hydroponic Culture

2021 ◽  
Vol 8 (4) ◽  
pp. 67-77
Author(s):  
Zubair Aslam ◽  
Ali Ahmad ◽  
Anser Ali ◽  
Alam Sher ◽  
Muhammad Sarwar
Keyword(s):  
Salicylic Acid ◽  
Salinity Stress ◽  
Positive Impact ◽  
Morphological Attributes ◽  
Saline Environment ◽  
Exogenous Application ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Physiological And Biochemical ◽  
Research Analysis

Salicylic acid (SA) is mainly associated with the regulation of plant growth particularly in salinity stress conditions and this signaling molecule exists in pivotal parts of plant. The objective of this research analysis was to overcome stress condition by distinct foliar treatments of Salicylic acid, for instance, 0 and 100 mM. Foliar applications of SA on maize were rendered on 10 days later than transplanting under a hydroponics experiment. Plants were grown under non-saline (S0= 0 mM NaCl) and saline (S1= 100 mM NaCl) conditions. Evaluation of biochemical, physiological and morphological attributes of maize was rendered after harvesting of plants. The experimental layout of Completely Randomized Design (CRD) under a factorial arrangement with three replications of each treatment was assigned for this study. According to our results it was confirmed that cultivation of maize under saline condition reduced the morphological, physiological and biochemical attributes of plant. However, exogenous application of SA on maize had a positive impact on the above mentioned traits under presence and absence of saline environment. Finally, it was justified that exogenous application of variable concentration of SA significantly improves whole parameters of maize cultivar.

scholarly journals Combined Kinetin and Spermidine Treatments Ameliorate Growth and Photosynthetic Inhibition in Vigna angularis by Up-Regulating Antioxidant and Nitrogen Metabolism under Cadmium Stress

Biomolecules ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 147 ◽  
Author(s):  
Mohammad Abass Ahanger ◽  
Usman Aziz ◽  
Abdulaziz Alsahli ◽  
Mohammed Nasser Alyemeni ◽  
Parvaiz Ahmad
Keyword(s):  
Cadmium Stress ◽  
Photosynthetic Parameters ◽  
Cd Stress ◽  
Vigna Angularis ◽  
Gas Exchange Parameters ◽  
Cd Uptake ◽  
Exogenous Application ◽  
Photosynthetic Inhibition ◽  
Combined Application ◽  
The Individual

Pot experiments were conducted to investigate the probable beneficial role of the individual as well as combined application of kinetin (50 μM Kn) and spermidine (200 μM Spd) on Vigna angularis under cadmium (Cd) stress. Cd treatment reduced growth by declining the content of chlorophylls and carotenoids, photosynthesis, and gas exchange parameters. Exogenously, Kn and Spd application enhanced the photosynthetic parameters and up-regulated the antioxidant system by improving the activities of antioxidant enzymes and the content of non-enzymatic components. In addition, the application of Kn and Spd resulted in significant improvement in the content of sugars, proline, and glycine betaine, ameliorating the decline in relative water content. Oxidative stress parameters including hydrogen peroxide, superoxide, lipid peroxidation, lipoxygenase activity, and electrolyte leakage increased due to Cd stress; however, the application of Kn and Spd imparted a significant decline in all these parameters. Further, reduced Cd uptake was also observed due to Kn and Spd application. Total phenols and flavonoids also increased due to Kn and Spd treatments under normal as well as Cd stress conditions, which may have further helped with the elimination of reactive oxygen species. Reduction in the activity of nitrate reductase and the content of nitrogen was ameliorated due to the exogenous application of Kn and Spd. Therefore, the exogenous application of Kn and Spd benefited Vigna angularis counteracting the damaging effects of Cd stress by up-regulating the tolerance mechanisms, including antioxidant and osmolyte metabolism.

Signaling pathway played by salicylic acid, gentisic acid, nitric oxide, polyamines and non-enzymatic antioxidants in compatible and incompatible Solanum-tomato mottle mosaic virus interactions

Plant Science ◽  
2020 ◽  
Vol 290 ◽  
pp. 110274 ◽  
Author(s):  
Alice Nagai ◽  
Priscila Bezerra Torres ◽  
Lígia Maria Lembo Duarte ◽  
Alexandre Levi Rodrigues Chaves ◽  
Amanda Ferreira Macedo ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Salicylic Acid ◽  
Mosaic Virus ◽  
Signaling Pathway ◽  
Enzymatic Antioxidants ◽  
Gentisic Acid ◽  
Virus Interactions

scholarly journals Mitigation of salinity stress by exogenous application of cytokinin in faba bean (Vicia faba L.)

2021 ◽  
Vol 49 (1) ◽  
pp. 12192
Author(s):  
Arafat A. ABDEL LATEF ◽  
Md. HASANUZZAMAN ◽  
Md. TAHJIB-UL-ARIF
Keyword(s):  
Oxidative Damage ◽  
Vicia Faba ◽  
Salinity Stress ◽  
Agricultural Land ◽  
Broad Bean ◽  
Ion Homeostasis ◽  
Growth And Yield ◽  
Exogenous Application ◽  
Mineral Homeostasis ◽  
Vicia Faba L

Soil salinity limits agricultural land use and crop productivity, thereby a major threat to global food safety. Plants treated with several phytohormones including cytokinins were recently proved as a powerful tool to enhance plant’s adaptation against various abiotic stresses. The current study was designed to investigate the potential role of 6-benzyladenine (BA) to improve broad bean (Vicia faba L.) salinity tolerance. The salt-stressed broad bean plantlets were classified into two groups, one of which was sprayed with water and another was sprayed with 200 ppm of BA. Foliar applications of BA to salt-exposed plants promoted the growth performance which was evidenced by enhanced root-shoot fresh and dry biomass. Reduced proline was strongly connected to the enhanced soluble proteins and free amino acids contents, protecting plant osmotic potential following BA treatment in salt-stressed broad bean. BA balanced entire mineral homeostasis and improved mineral absorption and translocation from roots to shoots, shoots to seeds and roots to seeds in salt-stressed plants. Excessive salt accumulation increased malondialdehyde level in leaves creating oxidative stress and disrupting cell membrane whereas BA supplementation reduced lipid peroxidation and improved oxidative defence. BA spray to salinity-stressed plants also compensated oxidative damage by boosting antioxidants defence mechanisms, as increased the enzymatic activity of superoxide dismutase, catalase, peroxidase and ascorbate peroxidase. Moreover, clustering heatmap and principal component analysis revealed that mineral imbalances, osmotic impairments and increased oxidative damage were the major contributors to salts toxicity, on the contrary, BA-augmented mineral homeostasis and higher antioxidant capacity were the reliable markers for creating salinity stress tolerance in broad bean. In conclusion, the exogenous application of BA alleviated the antagonistic effect of salinity and possessed broad bean to positively regulate the osmoprotectants, ion homeostasis, antioxidant activity and finally plant growth and yield, perhaps suggesting these easily-accessible and eco-friendly organic compounds could be powerful tools for the management of broad bean growth as well as the development of plant resiliency in saline prone soils.

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