Abstract
Lead is not essential for metabolism of organisms. Lead toxicity to nervous system in human is well established. It is released into the environment through various technogenic and geogenic sources. Soils are often co-contaminated with potentially toxic metals like lead, cadmium etc. and petroleum and chlorinated hydrocarbons etc. Organics can be degraded to less toxic forms by bioremediation strategies, while inorganics such as Pb, cannot be degraded. Phytormediation is one of the effective strategies to achieve natural attenuation. Ricinus communis L. (Castor bean, Euphorbiaceae) is a potential cadidate for environmental cleanup and revegetation of contaminated lands. Published literature acknowledges its outstanding remediation functions. Additionally, its environmental sustainable aspects and circular economics are attracting researchers in the field of agriculture and environmental sciences. Thispresent paper investigates the responses of castor bean seedlings to Pb-toxicity in hydroponics, which offers unique clues for understanding toxicity and tolerance manifestatins.
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