Abstract:
:Iridescent color appearances are widespread in nature. They arise from the interaction of light with micron- and submicron-sized physical structures spatially arranged with periodic geometry and are usually associated with bright angle-dependent hues. Iridescence has been reported for many animals and marine organisms. However, iridescence has not been well studied in bacteria. Recently, we reported a brilliant "pointillistic" iridescence in colony biofilms of marine Flavobacteria that exhibit gliding motility. The mechanism of their iridescence is unknown. Here, using a multi-disciplinary approach, we show that the cause of iridescence is a unique periodicity of the cell population in the colony biofilm. Cells are arranged together to form hexagonal photonic crystals. Our model highlights a novel pattern of self-organization in a bacterial biofilm. "Pointillistic" bacterial iridescence can be considered a new light-dependent phenomenon for the field of microbiology.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Kientz B,Luke S,Vukusic P,Péteri R,Beaudry C,Renault T,Simon D,Mignot T,Rosenfeld Edoi
10.1038/srep19906subject
Has Abstractpub_date
2016-01-28 00:00:00pages
19906issn
2045-2322pii
srep19906journal_volume
6pub_type
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