The Toxicity and Accumulation of Metals in Crop Plants

Metals are ubiquitously present in the environment and are crucial for life on earth. This is because several metals perform life saving biological functions. However, there are other metals, which are non-essential. The entry of toxic metals into plants causes physiological and biochemical disturbances and also affects molecular responses. The growth and development of plants are affected that ultimately reduces the yield and quality of plant produce. Another aspect of this issue is that through plant produce, metals gain entry into humans and cause several ailments including cancer. Hence, the concentration of toxic metals in plants and plant based food products needs to be regulated effectively. The present chapter gives an overview of metal toxicity to plants and the status of metal accumulation in various crop plants, fruits, vegetables, etc.