|Spores under an EM microscope |
Sporulation is a very complex process, as many genes (up to one-third of its total genes) are involved in the spore production. It takes only five hours to become a spore because the vegetative cells need protection, so sporulation must occur quickly. Each anthrax spore has approximately 750 in proteins in it.
The whole process of sporulation can be an evolutionary advantage. The bacteria that change into a spore the quickest will not die from environmental factors that normally will kill bacteria. Selection favors the bacteria that morphed into spores quickly. Also, the composition of spores must be fairly complex to provide such protection for the bacteria. Spores have a core adn cortex surrounded by a spore coat and an exosporium. This spore structure also could be credited to evolution by selection. The spores with better protection would have survived as opposed to any with minimal or insufficient protection from the environment. Spores are very necessary for the survival of Bacillus anthracis.
|Structure of a spore |
Chess, Barry. "4." Foundations in Microbiology. By Kathleen P. Talaro. 8th ed. New York: McGraw Hill, 2008. 105. Print.