Some Aspects of the Lichen Colonization and Its Interaction with Soil Particles
In this study, an analysis of the soil participation in the genesis of lichens, was practiced using photonic microscopy and transmission electron microscopy. In addition, the role of lectins and polysaccharides in the primary interaction was also revised. Cladonia rappii was used in this study to understand also the role of lectins, phenolic carboxylic acids and polysaccharides of the cell wall of the symbiont cells and their exchanges with the soil particles. The species showing lectins exhibited a matrix constituted by organic polymers having mineral crystals immersed in it. The difference in the composition of the polysaccharides of the cell wall could be not important in the cell/mineral interaction. Thus, the results revealed that the presence of agglutinant proteins (lectins) could lead primarily the binding of the soil crystals to the cell wall of the lichen.
Lichen, Cladonia rappii, Microenviroment, Venezuela
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