Cyanobacteria

Cyanobacteria

Life cycle(s) and Reproduction

Within the cyanobacterium life cycle, cyanobactera undergo cell division approximately once per day under the influence of moderate constant light and through intensifying the light, the cells start dividing more frequently as more energy is available. It takes about 19 hours for the cyanobacteria to rest before it can process cell division once more. 

Cyanobacteria reproduce by either through asexual or vegetative methods and no sexual methods are in existence because there are no meiosis and gamete formations.



The asexual reproductive method involves the creation of thick walled cells named akinetes, which are able to store food, and some form endogenous or exogenous spores. Transformation, transduction, and recombination have been known to occur, but conjugation has yet to be seen observed by cyanobacteria.



Vegetative reproduction arises from fission, fragmentation, or by the formation of the hormogonia. The unicellular form of the cyanobacteria display fission and the multicellular form display fragmentation.