An assessment to show toxic nature of beneficial trace metals: too much of good thing can be bad

Anita Singh, Parul Parihar, Rachna Singh and Sheo Mohan Prasad

Some metals are required in very small amount known as trace elements such as copper (Cu), manganese (Mn), molybdenum (Mo), cobalt (Co), nickel (Ni) and zinc (Zn). Although up to their threshold value they act as beneficial element but same elements become toxic at their higher concentration. These elements at their higher concentration disturb the metabolic functioning of plant, animal as well as human beings. The present report is also based upon brief overview on both beneficial as well as toxic impacts of several elements particularly on plant system.

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