The Role of Soil Beneficial Bacteria in Wheat Production: A Review

Free-living plant growth-promoting rhizobacteria (PGPR) have favourable effect on plant growth, tolerance against stresses and are considered as a promising alternative to inorganic fertilizer for promoting plant growth, yield and quality. PGPR colonize at the plant root, increase germination rates, promote root growth, yield, leaf area, chlorophyll content, nitrogen content, protein content, tolerance to drought, shoot and root weight, and delayed leaf senescence. Several important bacterial characteristics, such as biological nitrogen fixation, solubilization of inorganic phosphate and mineralization of organic phosphate, nutrient uptake, 1-aminocydopropane-1-carboxylic acid (ACC) deaminase activity and production of siderophores and phytohormones, can be assessed as plant growth promotion traits. By efficient use, PGPR is expected to contribute to agronomic efficiency, chiefly by decreasing costs and environmental pollution, by eliminating harmful chemicals. This review discusses various bacteria acting as PGPR, their genetic diversity, screening strategies, working principles, applications for wheat and future aspects in terms of efficiency, mechanisms and the desirable properties. The elucidation of the diverse mechanisms will enable microorganisms developing agriculture further

Performance-enhanced of triboelectric nanogenerator based on functionalized silicone with pumice for energy harvesting

Triboelectric nanogenerators (TENGs) are one of the technologies of obtaining clean energy, have become one of the interesting methods in recent years. Although TENGs have advantages such as low cost, easy fabrication, lightweight, and wide range of use, their low output values limit their use in commercial applications. In this study, we investigated the output performance of a silicone sealant and glass fiber based TENG by doping pumice to a silicone sealant matrix. According to the experimental studies, the output performance of TENG improved with increasing pumice addition and the highest output voltage was obtained for the TENG fabricated with 2.5 wt% pumice doping silicone. The highest power density was obtained with 2.5 wt% pumice doped silicone as 23.65 mW. Also, it was observed that the TENG output power was increased by 36.9% with pumice doping in the silicone sealant matrix. It was demonstrated that pumice doping has a great effect on surface roughness, dielectric constant, and dielectric loss which affect the TENG performance. As a result of this study, it was concluded that the TENG output performance could be enhanced and fabrication cost could be reduced with pumice as natural doping material

Fabrication and characterization of electrospun single-crystal lead manganese borate nanofibers

WOS:000423635900033Anhydrous borate compounds are important materials in optical applications as nonlinear optical materials (NLO), due to the presence of structural BxOy subunits. Herein, lead manganese borate (PbMnBO4) nanofibers have been firstly fabricated via a facile approach using a simple and inexpensive electrospinning technique. All of the synthesized samples were analyzed with X-Ray Diffractometer (XRD), Transmission Electron Microscope (TEM), Scanning Electron Microscope (SEM), Fourier Transform Infrared (FTIR), and Ultraviolet-visible Spectroscopy (UV-vis) method. In addition, they were thermally analyzed with Thermal Gravimetric and Differential Thermal Analyzer and TG-DTA diagrams were discussed in detail. All of the characterization results showed that the obtained PbMnBO4 nanostructures have nanofiber structures and good crystalline features. PbMnBO4 nanofiber synthesized for the first time and unprecedented in the literature is promising absorber materials for nonlinear optic applications.Karamanoglu Mehmetbey University Scientific Research Council (BAP)Karamanoglu Mehmetbey UniversityThe authors would like to thank to Karamanoglu Mehmetbey University Scientific Research Council (BAP) for their financial support

Nano-ceria based TENGs: Effect of dopant structure on energy harvesting performance

Engineering of materials with high dielectric constant is of great importance for highly efficient TENGs. The feasible way to reach this is to compose it with proper chemicals having a high dielectric constant such as nanopowders. In this work, the doping effect of the two different architectures of the same compound on triboelectric production has been studied. Nanopowder Cerium Oxide (CeO2) and its fiber arrangement have been selected and embedded into the silicon to enhance the tribonegative charge potential and their contributions to TENGs’ parameters relying on the varying doping ratios have been investigated. A large spectrum of analyses, such as XRD, SEM, TEM, HR-TEM, EDX, elemental mapping, Raman spectrum with mapping, optical microscope, and profilometer, has been used to elucidate the relationship between structural properties of produced dielectric layers and device performance. Both CeO2 nanoparticles and nanofibers, at 5wt% doping rates, have provided in turn ∼80% and ∼63% times higher power than that of undoped form since their doping has delivered a formation of more effective surface area. The findings of this research play an important role in addressing the issue of how TENGs’ performance can be regulated by playing with materials’ architecture instead of its chemical composition

A novel approach to contrast-induced nephrotoxicity: The melatonergic agent agomelatine

WOS: 000376488500007PubMed ID: 26886874Objective: To study the potential nephroprotective role of agomelatine in rat renal tissue in cases of contrast-induced nephrotoxicity (CIN). The drug's action on the antioxidant system and proinflammatory cytokines, superoxide dismutase (SOD) activity, levels of glutathione (GSH) and malondialdehyde (MDA) and the gene expression of interleukin-6 (IL-6), tumour necrosis factor (TNF)-alpha and nuclear factor kappa B (NF-kappa B) was measured. Tubular necrosis and hyaline and haemorrhagic casts were also histopathologically evaluated. Methods: The institutional ethics and local animal care committees approved the study. Eight groups of six rats were put on the following drug regimens: Group 1: healthy controls, Group 2: GLY (glycerol), Group 3: CM (contrast media-iohexol 10 ml kg(-1)), Group 4: GLY+CM, Group 5: CM+AGO20 (agomelatine 20 mg kg(-1)), Group 6: GLY+CM1AGO20, Group 7: CM1AGO40 (agomelatine 40 mg kg(-1)) and Group 8: GLY+CM+AGO40. The groups were evaluated by one-way analysis of variance and Duncan's multiple comparison test. Results: Agomelatine administration significantly improved the serum levels of blood urea nitrogen (BUN) and creatinine, SOD activity, GSH and MDA. The use of agomelatine had substantial downregulatory consequences on TNF-alpha, NF-kappa B and IL-6 messenger RNA levels. Mild-to-severe hyaline and haemorrhagic casts and tubular necrosis were observed in all groups, except in the healthy group. The histopathological scores were better in the agomelatine treatment groups. Conclusion: Agomelatine has nephroprotective effects against CIN in rats. This effect can be attributed to its properties of reducing oxidative stress and inhibiting the secretion of proinflammatory cytokines (NF-kappa B, TNF-alpha and IL-6). Advances in knowledge: CIN is one of the most important adverse effects of radiological procedures. Renal failure, diabetes, malignancy, old age and nonsteroidal anti-inflammatory drug use pose the risk of CIN in patients. Several clinical studies have investigated ways to avoid CIN. Theophylline/aminophylline, statins, ascorbic acid and iloprost have been suggested for this purpose. Agomelatine is one of the melatonin ligands and is used for affective disorders and has antioxidant features. In this study, we hypothesized that agomelatine could have nephroprotective, antioxidant and anti-inflammatory effects against CIN in rats

Nano-ceria based TENGs: Effect of dopant structure on energy harvesting performance

Engineering of materials with high dielectric constant is of great importance for highly efficient TENGs. The feasible way to reach this is to compose it with proper chemicals having a high dielectric constant such as nanopowders. In this work, the doping effect of the two different architectures of the same compound on triboelectric production has been studied. Nanopowder Cerium Oxide (CeO2) and its fiber arrangement have been selected and embedded into the silicon to enhance the tribonegative charge potential and their contributions to TENGs’ parameters relying on the varying doping ratios have been investigated. A large spectrum of analyses, such as XRD, SEM, TEM, HR-TEM, EDX, elemental mapping, Raman spectrum with mapping, optical microscope, and profilometer, has been used to elucidate the relationship between structural properties of produced dielectric layers and device performance. Both CeO2 nanoparticles and nanofibers, at 5wt% doping rates, have provided in turn ∼80% and ∼63% times higher power than that of undoped form since their doping has delivered a formation of more effective surface area. The findings of this research play an important role in addressing the issue of how TENGs’ performance can be regulated by playing with materials’ architecture instead of its chemical composition