ESSENTIALITY, TOXICITY AND THE MECHANISM OF TOXICITY OF NICKEL IN PLANTRAJ NARAYAN ROY
Nickel pollutant, one of the important widespread heavy metal pollutants starts from natural as well as anthropogenic sources. At present, it is a fact that nickel is an essential element vital for the healthy growth of plants. It plays a crucial responsibility for the activities of certain enzymes, for substantiating proper redox state of a cell and many other physiological, biochemical and growth responses. The use of nickel in modern technology is gradually increasing that result in hastening consumption of nickel-containing product. Nickel compounds arrive in the environment during its manufacturing as well as its use. Their rapid accumulation in different locations of the earth is responsible for widespread nickel pollution. This review presents an analysis of the existing situation related to essentiality, effect and mechanism of nickel toxicity in plants. The investigation of the current scenario is extremely crucial for the realization of the extent of the crisis linked to nickel as an environmental toxicant.