Antibiofilm activity in the culture supernatant of a marine Pseudomonas sp. bacterium.

Antibiofilm activity in the culture supernatant of a marine Pseudomonas sp. bacterium. Microbiology. 2020 Jan 14;: Authors: Doghri I, Brian-Jaisson F, Graber M, Bazire A, Dufour A, Bellon-Fontaine MN, Herry JM, Ferro AC, Sopena V, Lanneluc I, Sablé S Abstract In the marine environment, most solid surfaces are covered by microbial biofilms, mainly composed of bacteria and diatoms. The negative effects of biofilms on materials and equipment are numerous and pose a major problem for industry and human activities. Since marine micro-organisms are an important source of bioactive metabolites, it is possible that they synthesize natural ecofriendly molecules that inhibit the adhesion of organisms. In this work, the antibiofilm potential of marine bacteria was investigated using Flavobacterium sp. II2003 as a target. This strain is potentially a pioneer strain of bacteria that was previously selected from marine biofilms for its strong biofilm-forming ability. The culture supernatants of 86 marine heterotrophic bacteria were tested for their ability to inhibit Flavobacterium sp. II2003 biofilm formation and the Pseudomonas sp. IV2006 strain was identified as producing a strong antibiofilm activity. The Pseudomonas sp. IV2006 culture supernatant (SNIV2006) inhibited Flavobacterium sp. II2003 adhesion without killing the bacteria or inhibiting its growth. Moreover, SNIV2006 had no effect on the Flavobacterium sp. II2003 cell surface hydrophi...
Source: Microbiology - Category: Microbiology Authors: Tags: Microbiology Source Type: research