Physiological Effects Of Nickel Contamination On Plant Growth

Abstract

The mobility of nickel in the environment, soil and water is of considerable concern. In this review we want to determine characteristics of nickel and its significance effect on growth, photosynthesis, mineral nutrition and enzyme activity of plants. Nickel effects the plant physiological processes such as photosynthesis, water relation and mineral nutrition. Toxic effects of nickel on plant includes alteration in germination process, total dry matter production and yield which cause detrimental effects on plant. plant metabolic reactions are also strongly influenced by nickel because it has the ability to generate reactive oxygen species that may cause oxidative stress. Small amount of nickel is desirable for optimum plant growth and development however unwarranted amount of nickel cause detrimental effect on plant growth. In non-tolerant plants elevated concentration of Ni can inhibit cell division at root meristem and cause decrease in plant growth. Studies have revealed that Ni has a cynical effect on photosynthesis and respiration. High uptake of Ni causes a decline in water content of dicot and monocot plant species which act as an indicator for Ni toxicity in plants. Due to its complicated electronic chemistry Nickel has received very little attention which act as barrier to reveal the toxicity mechanism in plants.