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Photorhabdus asymbiotica as an insect and human pathogen
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Hapeshi, Alexia and Waterfield, Nicholas R. (2016) Photorhabdus asymbiotica as an insect and human pathogen. Current Topics in Microbiology and Immunology . doi:10.1007/82_2016_29 ISSN 0070-217X.
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Official URL: http://doi.org/10.1007/82_2016_29
Abstract
Photorhabdus asymbiotica is a species of bacterium that is pathogenic to humans whilst retaining the ability to infect insect hosts. Currently, there are two recognised subspecies, P. asymbiotica subsp. asymbiotica and P. asymbiotica subsp. australis with strains isolated from various locations in the USA, Australia, Thailand, Nepal and Europe. Like other species of Photorhabdus, P. asymbiotica subsp. australis was shown to form a symbiotic relationship with a Heterorhabditis nematode. In contrast to most strains of Photorhabdus luminescens, P. asymbiotica can grow at 37 °C and this is a defining factor in its ability to cause human disease. Insights into other adaptations it has undergone that have enabled host switching to occur have come from whole genome sequencing and transcriptomic studies. P. asymbiotica has a smaller genome compared to P. luminenscens with a lower diversity of insecticidal toxins. However, it has acquired plasmids and several pathogenicity islands in its genome. These encode genes with similarity to effectors or systems found in other known human pathogens such as Salmonella and Yersinia and are therefore likely to contribute to human pathogenicity. Of crucial importance to virulence is the fact that P. asymbiotica undergoes a large metabolic shift at the human host temperature.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School | ||||
SWORD Depositor: | Library Publications Router | ||||
Journal or Publication Title: | Current Topics in Microbiology and Immunology | ||||
Publisher: | Springer New York LLC | ||||
ISSN: | 0070-217X | ||||
Official Date: | 14 September 2016 | ||||
Dates: |
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Number of Pages: | 19 | ||||
DOI: | 10.1007/82_2016_29 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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