| Abstract: | The mineral theory consitutes the basis of modern plant nutrition. Plant nutrients are chemical elements, which are essential for growth and normal development of plants. Part of them is taken up from the atmosphere. In the case of molecular atmospheric nitrogen plants have to establish a symbiosis with specific bacteria to utilize this form of nitrogen by N2 fixation. For this purpose, special organs, the nodules, are developed that fulfill the structural requirements for the activity of the key enzyme of N2 fixation, namely the nitrogenase. The prevailing part of nutrients is acquired by plants via the root system. Since the uptake depends on solubilized nutrients in the soil solution, the mobilization of nutrients is of particular importance. The most important strategies of soil phosphate mobilization are descibed for white lupin, which serves as a model plant in modern research. |
