Ultrastructural changes associated with germination and outgrowth of an appendage-bearing clostridial spore.

Journal of Bacteriology
W A SamsonoffS F Conti

Abstract

The sequence of events occurring during the germination and outgrowth of appendage-bearing spores of Clostridium bifermentans was studied by phase-contrast and electron microscopy. The mature spore was characterized ultrastructurally as having the normal spore components as well as long tubular appendages which orginated from the surface of the spore coat. Spores were incompletely enclosed by a distinctly laminated exosporium which possessed hairlike projections on its outermost layer. During germination, structural changes were observed in the core, core wall, cortex, and spore coat layers. Cortical material was extruded from the spore during outgrowth, which usually occurred from the pole opposite the appendages. The subunits comprising the structure of the appendages and the morphology of the mature appendages were observed. No discernible changes could be observed in the spore appendages during germination and outgrowth.

References

Nov 1, 1968·Journal of Bacteriology·J F Hoeniger, C L Headley
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Citations

Jan 1, 1985·Microbiology and Immunology·S Kozuka, K Tochikubo
Jul 20, 2007·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Barbara J Panessa-WarrenJohn B Warren
May 1, 1971·CRC Critical Reviews in Microbiology·L J Rode
Apr 1, 1971·Journal of Bacteriology·W A SamsonoffS F Conti
Dec 1, 1971·Journal of Bacteriology·L J RodeL D Smith
Jul 1, 1977·Journal of Bacteriology·J J Tudor, S F Conti
Oct 1, 1972·Journal of Bacteriology·K E Stevenson, R H Vaughn
Jan 1, 1971·Journal of Bacteriology·L J Rode, L D Smith

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