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Telomeric and sub-telomeric regions undergo rapid turnover within a Streptomyces population

Abstract : Genome dynamics was investigated within natural populations of the soil bacterium Streptomyces. The exploration of a set of closely related strains isolated from micro-habitats of a forest soil exhibited a strong diversity of the terminal structures of the linear chromosome, i.e. terminal inverted repeats (TIRs). Large insertions, deletions and translocations could be observed along with evidence of transfer events between strains. In addition, the telomere and its cognate terminal protein complexes required for terminal replication and chromosome maintenance, were shown to be variable within the population probably reflecting telomere exchanges between the chromosome and other linear replicons (i.e., plasmids). Considering the close genetic relatedness of the strains, these data suggest that the terminal regions are prone to a high turnover due to a high recombination associated with extensive horizontal gene transfer.
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https://hal.univ-lorraine.fr/hal-02569171
Contributor : Pierre LEBLOND Connect in order to contact the contributor
Submitted on : Monday, May 11, 2020 - 10:14:41 AM
Last modification on : Wednesday, January 19, 2022 - 4:58:49 PM

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Abdoul-Razak Tidjani, Cyril Bontemps, Pierre Leblond. Telomeric and sub-telomeric regions undergo rapid turnover within a Streptomyces population. Scientific Reports, 2020, 10 (1), ⟨10.1038/s41598-020-63912-w⟩. ⟨hal-02569171⟩

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