Biochemical and physiological analysis of zinc tolerance in Jatropha curca
Journal Title: Journal of Experimental Biology and Agricultural Sciences - Year 2016, Vol 4, Issue 0
Abstract
Jatropha curcas L., widely recognized as a viable option for production of bio diesel, has been assessed for its ability to withstand stress induced by supra-optimal zinc concentrations. In the present study plants were exposed to varying Zinc (Zn) concentrations (0, 500, 1000, 1500 and 2000 mg/kg), and and different growth, physiological and biochemical parameters were studied. It was reported that up to 1500 mg/kg Zn, no significant effects on most of the growth parameters of the plants could be seen. However at 2000 mg/kg Zn, a clear retardation of growth was visible, which was apparently reflected by the physiological as well as biochemical parameters. These effects were more profound in the aerial parts of the plant. Atomic Absorption Spectra (AAS) profiles suggested that Zn got mainly accumulated in the roots after absorption from the soil. Osmotic adjustments indicated significantly increased accumulation of proline, phenols and reducing sugars with increasing concentration of Zn as compared to the control. Membrane damage was not observed up to 1000 mg/kg concentration. Jatropha, owing to its tolerance to supra-optimal Zn concentrations is, thus, a suitable candidate for phytoremediation of Zn from contaminated soils along with cultivation for biofuel production.
Authors and Affiliations
Atul Grover, Preeti Badoni, Maya Kumari, Vikas Yadav Patade, M Nasim
Keywords
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