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DNA adenine methyltransferase (Dam) overexpression impairs Photorhabdus luminescens motility and virulence

ABSTRACT: Dam, the most described bacterial DNA-methyltransferase, is widespread in gamma-proteobacteria. Dam DNA methylation can play a role in various genes expression and is involved in pathogenicity of several bacterial species. In the entomopathogenic bacterium Photorhabdus luminescens, a dam ortholog was identified. Overexpression of dam in P. luminescens did not impair growth ability in vitro. In contrast, compared to a control strain harboring an empty plasmid, a significant decrease in motility was observed in the dam-overexpressing strain. In addition, the dam-overexpressing P. luminescens strain showed a delayed virulence compared to that of the control strain after injection in larvae of the lepidopteran Spodoptera littoralis. These results reveal that Dam plays a major role during P. luminescens insect infection.

ORGANISM(S): Photorhabdus laumondii subsp. laumondii TTO1

PROVIDER: GSE100650 | GEO | 2017/10/04

SECONDARY ACCESSION(S): PRJNA392424

REPOSITORIES: GEO

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