Phenotypic heterogeneity of Pseudomonas aeruginosa isolates in the protected nature park ‘Palić’ (Serbia)
| Autor: | Željka Rudić, Vera Raičević, Bojana Vujović, Smilja Teodorović, Mile Božić |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
030106 microbiology Swarming (honey bee) Virulence Motility pyocyanin medicine.disease_cause Microbiology 03 medical and health sciences chemistry.chemical_compound Pyocyanin rhamnolipid production medicine Water Science and Technology biology Pseudomonas aeruginosa Rhamnolipid Biofilm biochemical phenomena metabolism and nutrition biology.organism_classification 030104 developmental biology motility chemistry biofilms Bacteria |
| Zdroj: | Water Science and Technology-Water Supply Water science and technology-water supply |
| ISSN: | 1607-0798 1606-9749 |
| Popis: | 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 delineate 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|