The defensive role of silicon in wheat against stress conditions induced by drought, salinity or cadmium

Ecotoxicology and Environmental Safety, Journal Year: 2018, Volume and Issue: 154, P. 187 - 196

Published: Feb. 22, 2018

Language: Английский

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Impacts of Priming with Silicon on the Growth and Tolerance of Maize Plants to Alkaline Stress

Frontiers in Plant Science, Journal Year: 2016, Volume and Issue: 7

Published: March 10, 2016

Silicon (Si) has been known to augment plant defense against biotic and abiotic pressures. Maize (Zea maize L.) is classified as a Si accumulator relatively susceptible alkaline stress. In this study, seeds of were grown in pots exposed various concentrations Na2CO3 (0, 25, 50, 75 mM) with or without 1.5 mM the form sodium metasilicate Na2O3Si.5H2O for 25 days. Alkaline-stressed plants showed decrease growth parameters, leaf relative water content (LRWC), contents photosynthetic pigments, soluble sugars, total phenols potassium ion (K(+)), well potassium/sodium (K(+)/Na(+)) ratio. By contrast, stress increased proteins, free amino acids, proline, Na(+) malondialdehyde (MDA), activities superoxide dismutase (SOD), catalase (CAT), peroxidase (POD) stressed plants. On other hand, application by seed-priming improved plants, which was accompanied enhancement LRWC, levels acids K(+), SOD, CAT, POD enzymes. Furthermore, supplement resulted MDA Na(+), together enhanced K(+) level led favorable adjustment K(+)/Na(+) ratio, treated alone. Taken together, these results indicate that plays pivotal role alleviating negative effects on improving status, enhancing accumulating osmoprotectants rather than activating antioxidant machinery, maintaining balance Thus, our findings demonstrate an efficient strategy can be used boost tolerance

Language: Английский

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Interactive effect of salinity and silver nanoparticles on photosynthetic and biochemical parameters of wheat

Archives of Agronomy and Soil Science, Journal Year: 2017, Volume and Issue: 63(12), P. 1736 - 1747

Published: March 9, 2017

The present study investigated the influence of seed priming with silver nanoparticles (Ag NPs), 0, 2, 5 and 10 mM, on growth biochemical parameters wheat (Triticum aestivum L.) under salt stress. As expected, 150 mM NaCl decreased shoot fresh dry weights chlorophyll contents increased catalase (CAT) peroxidase (POD) activities. Salinity enhanced concentration proline, soluble sugars, malondialdehyde hydrogen peroxide. Seed Ag NPs weight normal salt-stressed plants. Lower total sugars proline contents, while higher levels these compared to control. combined application stress it CAT activity POD respective treatments alone. Overall, our results demonstrated that tolerance in wheat, but long-term response needs further investigation.

Language: Английский

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Cadmium stress in cotton seedlings: Physiological, photosynthesis and oxidative damages alleviated by glycinebetaine

South African Journal of Botany, Journal Year: 2016, Volume and Issue: 104, P. 61 - 68

Published: Jan. 28, 2016

Cadmium (Cd) level is continuously increasing in agricultural soils mainly through anthropogenic activities. one of the most phytotoxic metals soils. The present study investigates possible role exogenously applied glycinebetaine (GB) alleviating Cd toxicity cotton (Gossypium hirsutum L.) plants a hydroponic system. Three concentrations (0, 1.0, and 5.0 μM) were tested with without foliar application GB (1.0 mM). caused significant decrease plant height, root length, number leaves per plant, fresh dry weights leaf, stem intensively increased concentration different parts. also decreased photosynthetic pigments gas exchange characteristics leaves. Superoxide dismutase (SOD), guaiacol peroxidase (POD), catalases (CAT) ascorbate (APX) activities under lower stress while higher (5.0 μM). reactive oxygen species (ROS) as indicated by production malondialdehyde (MDA), hydgrogen peroxide (H2O2) electrolyte leakage both roots. Application parts, alleviated Cd-induced inhibition growth biomass led to increase pigments, protein contents antioxidant enzymes. Glycinebetaine oxidative damage evidenced leakage, H2O2 MDA contents. These results revealed that might alleviate lowering regulating induced parts possibly performance enzymatic

Language: Английский

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Recent Trends in Nano-Fertilizers for Sustainable Agriculture under Climate Change for Global Food Security

Nanomaterials, Journal Year: 2022, Volume and Issue: 12(1), P. 173 - 173

Published: Jan. 5, 2022

Nano-fertilizers (NFs) significantly improve soil quality and plant growth performance enhance crop production with fruits/grains. The management of macro-micronutrients is a big task globally, as it relies predominantly on synthetic chemical fertilizers which may not be environmentally friendly for human beings expensive farmers. NFs nutrient uptake by regulating the availability in rhizosphere; extend stress resistance improving nutritional capacity; increase defense mechanisms. They also substitute sustainable agriculture, being found more suitable stimulation development. are associated mitigating environmental stresses enhancing tolerance abilities under adverse atmospheric eco-variables. Recent trends explored relevant agri-technology to fill gaps assure long-term beneficial agriculture strategies safeguard food security globally. Accordingly, nanoparticles emerging cutting-edge agri-improvement near future. Interestingly, they do confer capabilities plants. effective appropriate mechanisms revealed this article update researchers widely.

Language: Английский

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