In this article we will discuss about the role of mineral elements in plants. The mineral elements, when present as ions or as constituents or organic molecules, perform several important functions in plants in a number of different ways (Table 9-3). They are important constituents of protoplasm and cell wall e.g., sulphur occurs in proteins, phosphorus in nucleoproteins and adenosine [...]
In this article we will discuss about the roles of micronutrients elements in plants. 1. Manganese: Manganese is required in very low concentrations as its high concentrations become toxic to plants. It is abundant in the physiologically active parts of the plant especially leaves and it is relatively immobile. It is an activator of enzymes involved in respiration and nitrogen [...]
The movement of solutes through the plant tissues can take place in two pathways, the one is cytoplasmic pathway and the other is cell wall pathway. Solute movement may occur through channels in the cell walls and is, therefore, extracellular. In this way it bypasses the protoplasts and overcomes the barriers in the cross membranes. In this process the solutes [...]