The polar filament is coiled along the inner wall of the polar capsule, and is capable of rapid extrusion, during which it everts "inside-out". When everted, it is sticky, and probably serves to hold the spore on to the intestinal wall of the prospective host, and to help separate the valves of the spore.
The polar filament is important in species classification. In some specied of Ceratomyxa, the polar filament forms a straight basal section, which the rest of the filament coils around, while in the genus Sphaeromyxa, the filament is folded in a zig-zag arrangement, rather than being coiled.
The early events of Brachiola algerae (Microsporidia) infection: spore germination, sporoplasm structure, and development within host cells
Jan 01, 2005; Key words: Microsporidia, Brachiola algerae, cell culture, extrusion, phagocytosis, polar tube Abstract. Brachiola algerae (Vavra...
Microsporidian spore invasion tubes as revealed by fluorescent probes. (Reports from the Marine Biological Laboratory General Scientific Meetings)
Oct 01, 1994; Microsporidian protozoa are intracellular parasites common in arthropods and fish. The novel feature of these parasites is the...