Aging of prokaryotic organisms | Zendy

Marek Šimon | Zendy; Magdalena Waszyk-Nowaczyk | Zendy; Krzysztof Książek | Zendy

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Aging of prokaryotic organisms

Author(s) -

Marek Šimon,

Magdalena Waszyk-Nowaczyk,

Krzysztof Książek

Publication year - 2011

Publication title -

postępy higieny i medycyny doświadczalnej

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.275

H-Index - 34

eISSN - 1732-2693

pISSN - 0032-5449

DOI - 10.5604/17322693.955129

Subject(s) - caulobacter crescentus , organism , biology , bacteria , context (archaeology) , model organism , cell division , senescence , microbiology and biotechnology , escherichia coli , cell cycle , eukaryotic cell , cell , genetics , bacterial protein , gene , paleontology

Until recently it was thought that aging is a characteristic feature only of cells and organisms of eukaryotic origin. Recent studies on Caulobacter crescentus showed that their dimorphic life cycle associated with asymmetric cell division leads to a gradual increase in the time needed for the development of new bacteria generations, which may reflect aging of this organism. Moreover, as shown in Escherichia coli, accelerated exhaustion of proliferative capacity and bacteria death are caused by inheritance of certain structures from the mother cell during cell division. A similar phenomenon, called 'conditional senescence', has been observed during the stationary phase of growth in liquid cultures. The aim of this paper is to present the current state of knowledge on the causes, mechanisms and evolutionary significance of aging in bacteria. Some issues associated with bacterial aging will be discussed in the context of similar phenomena occurring in eukaryotic cells.

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