Abstract
In order to study the effect of a long-term stress and/or starvation on a natural microbial community we have analysed both the quantitative and the qualitative changes in the composition of a bacterial community after 30 months incubation in a seawater microcosm system. Measures of the bacterial density showed a general decrement of values of living, total and heterotrophic cultivable bacteria. Nevertheless, 16S rRNA taxonomical analysis revealed a microbial population characterised principally by the persistence of sequences related toAlteromonas genus. The application of the theory of stochastic Boolean network on biological systems has given an important speculative tool to the development of the hypothesis for the explication of the dynamics of microbial populations during a long-term stress and/or starvation conditions.
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