EFFECTS OF OZONE ON THE FINE STRUCTURE OF THE PALISADE PARENCHYMA CELLS OF BEAN LEAVES

摘要: The effects of ozone on the fine structure palisade parenchyma cells were two phases. first phase involved changes in chloroplast stroma which consisted either a granulation and an increase electron density or formation ordered arrays granules fibrils. In second phase, there was general disruption cellular membranes organelles contents aggregated center cells. characteristic components this aggregate remains membrane system numerous These identical with those previously observed damaged by peroxyacetyl nitrate probably related to oxidation properties both molecules. some organization grana within chloroplasts.