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Type: Artigo de periódico
Title: Quorum Sensing Detected By Atomic Force Microscopy Imaging Of Corrals Surrounding Multicellular Arrangement Of Bacteria.
Author: Teschke, Omar
De Souza, Elizabeth Fátima
Silva-Stenico, Maria Estela
Fiore, Marli De Fátima
Etchegaray, Augusto
Abstract: Connectivity of the glycocalyx covering of small communities of Acidithiobacillus ferrooxidans bacteria deposited on hydrophilic mica plates was imaged by atomic force microscopy. When part of the coverage was removed by water rinsing, an insoluble structure formed by corrals surrounding each individual bacterium was observed. A collective ring structure with clustered bacteria (>or=3) was observed, which indicates that the bacteria perceived the neighborhood in order to grow a protective structure that results in smaller production of exopolysaccharides material. The most surprising aspect of these collective corral structures was that they occur at a low bacterial cell density. The deposited layers were also analyzed by confocal Raman microscopy and shown to contain polysaccharides, protein, and glucoronic acid.
Subject: Acidithiobacillus
Bacterial Proteins
Glucaric Acid
Microscopy, Atomic Force
Microscopy, Confocal
Polysaccharides, Bacterial
Quorum Sensing
Citation: Microscopy Research And Technique. v. 71, n. 2, p. 112-8, 2008-Feb.
Rights: fechado
Identifier DOI: 10.1002/jemt.20530
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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