Structural Adaptations Of Cellular Walls Of Aquatic Plants To The Action Of Ions Of Zinc And Lead


V. V. Grubinko, Ð?. V. Kostyuk

Main specific and nonspecific cells responses and membrane structures participation in formation of cells resistance in stress conditions, caused by heavy metals (chlorella, waterweed, duckweed) in toxic concentrations are analyzed. The cell membranes participation in adaptation to toxicants (formation of growths, multiplication, fluidization, forming of aquaporin, apoptosis), which are first exposed to stressors, is discussed. Found specific and nonspecific reactions in membrane formation are proposed to use as biomarkers of toxicity. The primary response of cells of aquatic plants to the action of toxicants is largely determined by changes in the cell wall. Primary reactions to stress of the outer membranes are membrane ruptures and repair, animation and fluidization, formation of aquaporin. We identified the relationship between the resistance of cells to various toxicants and state of their external walls; this allows us to assert that the stability of the cell membrane is an integral factor in ensuring the sustainability of water plants to adverse environmental conditions. Generating of membranous structures in plant cells by aqueous environment can serve as a biomarker of degradation of such environment. The advantage of these identified effects as a biomarker could be their early identification ability.


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