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Phenotypic heterogeneity of Pseudomonas aeruginosa isolates in the protected nature park 'Palic' (Serbia)

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2016
Authors
Vujović, Bojana
Teodorović, Smilja
Rudić, Zeljka
Božić, Mile
Raičević, Vera
Article (Published version)
Metadata
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Abstract
Pseudomonas aeruginosa is a globally distributed environmental bacterium, which is also a significant opportunistic pathogen of humans, animals and plants. It is considered that wide distribution of this bacterium is connected with its most significant constitutive property to form biofilms, and that this multicellular mode of growth, predominant in nature, serves as a protective mechanism against unfavourable environmental conditions. The work presented here examines the phenotypic diversity of Pseudomonas aeruginosa environmental isolates with respect to biofilm production capacity under different environmental conditions (temperature, pH, NaCl), production of virulence factors, and motility. The purpose of this work is to present the production of two quorum sensing-regulated virulence factors (rhamnolipids and pyocyanin), explore different motility tests (swimming, swarming and twitching) and discover potential relationship between assessed phenotypic features. Obtained results del...ineate environmental conditions coinciding with biofilm production and suggest a high correlation between rhamnolipid production levels and biofilm formation. Rhamnolipids affect motility competence, yet only the flagellum-mediated swimming motility has significant impact on the biofilm formation potential. Although it is challenging to demarcate a definitive, clear correlation between parameters tested, rhamnolipid content appears to serve as a link between the tested phenotypic factors.

Keywords:
biofilms / motility / Pseudomonas aeruginosa / pyocyanin / rhamnolipid production
Source:
Water science and technology-water supply, 2016, 16, 5, 1370-1377
Publisher:
  • Iwa Publishing, London
Projects:
  • Biodiversity as potential in ecoremediation technologies of degraded ecosystems (RS-31080)
  • Inovation of Forensic Methods and their Application (RS-34019)
  • Advancing research in agricultural and food sciences at Faculty of Agriculture, University of Belgrade (EU-316004)

DOI: 10.2166/ws.2016.061

ISSN: 1606-9749

WoS: 000386701800021

Scopus: 2-s2.0-84998886433
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URI
http://jakov.kpu.edu.rs/handle/123456789/692
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  • Radovi istraživača / Researchers' publications
Institution
Jakov

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