Modern Phytomorphology

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Ultrastructural changes in the membrane system of isolated chloroplasts of spinach under the influence of carbonic anhydrase inhibitors AA and EA

Abstract

M. V. Vodka, N. O. Biliavs’ka, E. K. Zolotareva

The effects of carbonic anhydrase inhibitors (АА and EA) on the membrane system of isolated chloroplasts of spinach were investigated. Under the influence of AA the considerable alterations in granal structure occurred, the thickness of the granal thylakoids increased by 36% and the interspace between thylakoids by 10% comparable with the control. As a result of EA treatment, the thickness of granal thylakoids enhanced by 31% and the interspace between thylakoids increased by 8% in comparison to the control. It was shown that structure of the granal system of the chloroplast was more sensitive to AA than EA. The data obtained can indicate a decrease in the activity of the thylakoid carbonic anhydrase, inhibition of electron transport and photosynthetic process as a whole in the presence of carbonic anhydrase inhibitors (AA and EA).

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