Anatomical structure and chloroplasts ultrastructural peculiarity of some hydrophytes leaves

The comparative analysis of the anatomical study, chloroplast ultrastructure and pigments content of submerged leaves of Potamogeton perfoliatus, P. pectinatus and Myriophyllum spіcatum at budding-flowering stage with light microscopy, transmission electron microscopic and biochemical methods were realized. The absent of stomata, the presence of undifferentiated mesophyll was shown with anatomical study of hydrophytes leaves. The common and distinctions signs of chloroplast ultrastructure in leaf photosynthesizing parenchyma were revealed in dependent from species. The structural changes of leaf phonotypical plasticity are examined as adaptative device of submerged leaves under influence of altered environment.