Digitale Medien
Oxford, UK
:
Blackwell Publishing Ltd
Plant, cell & environment
5 (1982), S. 0
ISSN:
1365-3040
Quelle:
Blackwell Publishing Journal Backfiles 1879-2005
Thema:
Biologie
Notizen:
Abstract. Modifications in plasma membrane structure and permeability were observed in Chlorella sorokiniana following exposure to 0.2 gm−3(140 p.p.m.) O3 for 30 min. Sixty-eight per cent of the cells were plasmolysed after 15 min O3 exposure with disruption of organelles similar to that previously described in higher plants. Freeze-fracture exposed large areas of plasma membrane in 90% of the control cells and those exposed to O3for short periods. After 20 min O3 90% of the cells cross-fracture, which indicates a change in molecular interactions in the membrane exposed to O3 The earliest observed ultraslructural alteration is an aggregation of particles on the plasma membrane P face, statistically significant after 10 min O3 Changes in 86Rb influx occur during a similar time. After more extended exposure to O3 the plasma membrane P face shows regions of lipid phase transition to the crystalline state.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1111/j.1365-3040.1982.tb00937.x
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