Microbiology Procedure
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Index >>Prokaryotes Microbes >> Elementary Bodies/Minimal Reproductive Units

Elementary Bodies/Minimal Reproductive Units

Elementary Bodies / Minimal Reproductive UnitsHowever, cells of mollicuts divide unevenly into very minute bodies called the elementary bodies or minimal reproductive units. They are commonly formed inside the large bodies or mature cells. These elementary bodies range in size from about 330 nm to 450 nm. These can pass through bacteria rataining filters like viruses but are viable on ordinary media. These have bacteria like structure.

These bodies are often cited as the smallest independently living entities. These represent a stage in the life cycle. They enlarge to form long filaments and mycelia and chains of minute spheres like conidia but much smaller in size. It is thought by some that these conidia like bodies are liberated and that each increases in size to become larger body several in diam, inside which new elementary bodies are formed.

These are released by rupture of the membrane of larger body. Growth rate of mycoplasma is very rapid, generation time 1-3 hrs. Like viruses and animal cells, mycoplasmas are resistant to penicillin. Many other type of structures are also present. The 16S rRNA sequencing has confirmed that the mollicutes are a coherent phylogenetic group closely related to the clostridia

 

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