Dyal Singh College

About: Dyal Singh College is a based out in . It is known for research contribution in the topics: Piezoelectricity & Ultimate tensile strength. The organization has 51 authors who have published 91 publications receiving 463 citations.

Root exudates ameliorate cadmium tolerance in plants: A review

Abstract: In the past few decades, cadmium (Cd) as soil contaminant is a major problem for the mankind. Cd contamination of soil and food crops is a critical environmental concern as it deteriorates the soil quality and creates threat to the food safety and human health. High Cd concentration in soils pose negative effects on the plants at physiological, structural and molecular levels. Secretion of certain secondary metabolites in the rhizosphere is a survival mechanism adopted by plants to tolerate and encounter Cd toxicity. Under metal-stressed conditions, secretion of root exudates in soil increases the external detoxification strategies of the plants. The secreted phytochemicals are gaseous compounds, inorganic and especially organic in composition. In plants, the role of these metabolites to confront Cd toxicity and induce tolerance under Cd distress is underrated. The review paper focuses on Cd sources, factors that affect its bioavailability, uptake and toxicity in the plants. Furthermore, it also highlights the contemporary progression in our understanding on the mechanisms of root exudation in plants and the effect of Cd toxicity on the root exudation. Finally, the review provides important information on the role of different root exudates to subsist Cd stress in plants naturally, particularly by reducing the dependence on synthetic amendments to enhance Cd-tolerance and its aquisition in plants.

Excess Molar Volumes and Viscosities for Binary Mixtures of 2-Propoxyethanol and of 2-Isopropoxyethanol with Propylamine and Dipropylamine at (298.15, 308.15, and 318.15) K

Abstract: Excess molar volumes and viscosities η have been measured as a function of composition for the binary mixtures of 2-propoxyethanol and of 2-isopropoxyethanol with propylamine and dipropylamine at (298.15, 308.15, and 318.15) K. From the experimental data, the deviation in the viscosity η from ∑xi ln ηi has been calculated at various temperatures. The excess molar volumes are negative whereas the deviation in the viscosities is positive for all investigated systems over the whole composition range. These results suggest that the stronger hydrogen bonds between unlike molecules reduce the volume of the solution and make the solution high viscosity. A Redlich−Kister type equation was applied to fit the excess volumes and viscosity deviations, and McAllister's three-body and four-body interaction models were also used to correlate the kinematic viscosities.