Ozone-induced Loss of Intracellular Potassium Ion from Chlorella sorokiniana
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منابع مشابه
Ozone-induced Loss of Intracellular Potassium Ion from Chlorella sorokiniana.
The unicellular algae Chlorella sorokiniana was used as a model system to investigate the interaction of ozone with plant cell membranes. Ozone induces K(+) leakage from Chlorella sorokiniana similar to the electrolytic loss observed from many higher plants under stressful conditions. The kinetics of this leakage indicate that ozone initially interacts reversibly (within sec) with sites on memb...
متن کاملOzone Inhibition of Photosynthesis in Chlorella sorokiniana.
Exposure of Chlorella sorokiniana (07-11-05) to ozone inhibits photosynthesis. In this study, the effects of ozone on O(2) evolution and fluorescence yields are used to characterize this inhibition. At an ozone dose of about 3 micromoles delivered to 2 x 10(9) cells, the photosynthetic rate of the cells is inhibited 50%, as indicated by a decrease in bicarbonate-stimulated O(2) evolution (contr...
متن کاملDecline in Energy Reserves of Chlorella sorokiniana upon Exposure to Ozone.
Ozone exposure has been shown to increase the loss of K from Chlorella cells due to an increase in passive permeability and a depolarization of membrane potential. One factor which likely influences or can be influenced by these changes is the energy state of the cell. To study this relationship, various indicators of cell energy status were examined in the presence and absence of O(3).The acti...
متن کاملOxygen-tolerant Strain of Chlorella sorokiniana.
[This corrects the article on p. 140 in vol. 17.].
متن کاملOzone alteration of membrane permeability in chlorella: I. Permeability of potassium ion as measured by rubidium tracer.
The addition of ozone to a suspension of Chlorella sorokiniana causes a rapid loss of K(+), as measured by efflux of (86)Rb from prelabeled cells. The efflux of the tracer is stimulated some 15 to 20 times over that of the control. For about 100 microliters per liter ozone, about 25 minutes (6 x 10(-8) moles O(3) delivered per minute) of exposure are required for a 50% depletion of the intracel...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1975
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.56.6.723