Bacterial spores formation process

Spore formation is limited almost entirely to two genera of rodshaped bacteria Bacillus (aerobic or facultatively anaerobic), and Clostridium (anaerobic or aerotolerant). With one possible exception, the common spherical bacteria do not sporulate. Some spore-bearing species can be made to lose their ability to produce spores. When the ability to produce spores is once lost, it is seldom regained. SporMation is not a process to increase bacterial numbers because a cell rarely produces more than one spore. 

Typical morphogenetic processes in bacteria are sexual reproduction and spore-formation, although these phenomena constitute a small part of the total dynamics of reproduction of bacterial cells. Clearly, therefore, we cannot regard the morphogene-... 

It has been known for some time that certain types of bacteria spend a certain amount of their lifespan in a dormant state. The bacteria are then known as en-dospores , or just spores . In this state, they appear not to undergo any metabolic processes and are important particularly because of their heat resistance. The formation of spores is a highly complex process of bacterial cell differentiation. 

The transition from vegetative cells to spores is an unicellular differentiation process which occurs for many bacterial species under appropriate environmental conditions. The morphological changes which occur during sporulation are divided into six main stages 1. Axial filament formation, 2. Septum formation, 3. Development of... 

These findings suggest that polymyxin formation and sporulation are subject to joint control and that there may be a functional relationship between these processes. However, even though polymyxin is undoubtedly an important metabolite, as the amount produced may exceed 10% of the bacterial dry weight, very few clues exist as to its possible function. It had been suggested that peptide antibiotics are structural components of the spore coat (Bernlohr and Novelli, 1962), and Jann and Eichhorn (1964) have reported the presence of DBA in spores of B. circulans. However, careful analysis of spores and sporecoats of B. polymyxa strain Pfizer 2459 failed to reveal the presence of significant amounts... 

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