NDLI: Rhamnolipid production: effect of oxidative stress on virulence factors and proteome of Pseudomonas aeruginosa PA1

Content Provider	Springer Nature Link
Author	Pacheco, Graziela Jardim Reis, Rodrigo Siqueira Fernandes, Ana Carolina Loureiro Brito Rocha, Surza Lucia Gonçalves Pereira, Marcos Dias Perales, Jonas Freire, Denise Maria Guimarães
Copyright Year	2012
Abstract	Under specific environmental conditions, Pseudomonas aeruginosa produces a biodegradable surfactant rhamnolipid. Evidences suggest that this biosurfactant is involved in protecting cells against oxidative stress; however, the effects of oxidative stress on its production and other virulence factors are still unclear. Here we show that rhamnolipid production is dependent on the aeration surface when P. aeruginosa is cultured in shaken flasks, as well as in production of elastases and alkaline proteases. The production of alginate, lipase, and pyocyanin was not detected in our shaken-flask experiments. P. aeruginosa was treated with hydrogen peroxide to trigger its oxidative stress response, and the proteome profile was analyzed. We identified 14 proteins that were expressed differently between samples that were treated and not treated with peroxide; these proteins are potentially involved in the rhamnolipid production/secretion pathway and oxidative stress.
Starting Page	1519
Ending Page	1529
Page Count	11
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	95
Issue Number	6
e-ISSN	14320614
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-07-11
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Pseudomonas aeruginosa Rhamnolipid Oxidative stress Virulence factors Proteomics Biotechnology Microbiology Microbial Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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