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Conserved virulence factors of Pseudomonas aeruginosa are required for killing Bacillus subtilis

Park, Shin-Young; Heo, Yun-Jeong; Choi, Young-Seok; Déziel, Éric; Cho, You-Hee (2005). Conserved virulence factors of Pseudomonas aeruginosa are required for killing Bacillus subtilis Journal of Microbiology , vol. 43 , nº 5. p. 443-450.

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Résumé

The multi-host pathogen, Pseudomonas aeruginosa, possesses an extraordinary versatility which makes it capable of surviving the adverse conditions provided by environmental, host, and, presumably, competing microbial factors in its natural habitats. Here, we investigated the P. aeruginosa-Bacillus subtilis interaction in laboratory conditions and found that some P. aeruginosa strains can outcompete B. subtilis in mixed planktonic cultures. This is accompanied by the loss of B. subtilis viability. The bactericidal activity of P. aeruginosa is measured on A subtilis plate cultures. The bactericidal activity is attenuated in pqsA, mvfR, lasR, pilB, gacA, dsbA, rpoS, and phnAB mutants. These results suggest that P. aeruginosa utilizes a subset of conserved virulence pathways in order to survive the conditions provided by its bacterial neighbors

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Mots-clés libres: Bacillus, Pseudomonas aeruginosa, survival, virulence
Centre: Centre INRS-Institut Armand Frappier
Date de dépôt: 02 mai 2014 14:04
Dernière modification: 02 mai 2014 14:04
URI: http://espace.inrs.ca/id/eprint/2244

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