Comparative transcriptome analysis of Desulfovibrio vulgaris grown in planktonic culture and mature biofilm on a steel surface.

Comparative transcriptome analysis of Desulfovibrio vulgaris grown in planktonic culture and mature biofilm on a steel surface. Research Abstract Details 

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Comparative transcriptome analysis of Desulfovibrio vulgaris grown in planktonic culture and mature biofilm on a steel surface. Abstract Text:

Weiwen Zhang,David E Culley,Lei Nie,Johannes C M Scholten,Weiwen Zhang,David E Culley,Lei Nie,Johannes C M Scholten,

Biofilm build-up of sulphate-reducing bacteria (SRB) on metal surfaces may lead to severe corrosion of iron. To understand the processes at molecular level, in this study, a whole-genome oligonucleotide microarray was used to examine differential expression patterns between planktonic populations and mature biofilm of Desulfovibrio vulgaris on a steel surface. Statistical analysis revealed that 472 genes were differentially expressed (1.5-fold or more with a q value less than 0.025) by comparing the biofilm cells with the planktonic cells. Among the differentially expressed genes were several that corresponded to genes identified in many aerobic bacterial biofilms (i.e., Pseudomonas species and Escherichia coli) such as genes encoding flagellin, a flagellar motor switch protein, chemotaxis proteins involved in cell motility, as well as genes involved in exopolysaccharide biosynthesis. In addition, the biofilm-bound cells of D. vulgaris exhibited decreased transcription of genes involved in protein synthesis, energy metabolism and sulfate reduction, as well as genes involved in general stress responses. These findings were all consistent with early suggestion that the average physiology of the biofilm cells were similar to cells reduced in growth. Most notably, up-regulation of large number of outer membrane proteins was observed in the D. vulgaris biofilm. Although their function is still unknown, the higher expression of these genes in the biofilm could implicate important roles in the formation and maintenance of multi-cellular consortium on a steel surface. The study provided insights into the metabolic networks associated with the formation and maintenance of a D. vulgaris biofilm on a steel surface.

Comparative transcriptome analysis of Desulfovibrio vulgaris grown in planktonic culture and mature biofilm on a steel surface. Publishing Authors By Initials

W Zhang,DE Culley,L Nie,JC Scholten,W Zhang,DE Culley,L Nie,JC Scholten,

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Comparative transcriptome analysis of Desulfovibrio vulgaris grown in planktonic culture and mature biofilm on a steel surface. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Applied microbiology and biotechnology

VOLUME: 76

Page Numbers: 447-57

Journal Abbreviation: Appl. Microbiol. Biotechnol.

ISSN: 0175-7598

DAY: 15

MONTH: 06

YEAR: 2007

Comparative transcriptome analysis of Desulfovibrio vulgaris grown in planktonic culture and mature biofilm on a steel surface. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Comparative transcriptome analysis of Desulfovibrio vulgaris grown in planktonic culture and mature biofilm on a steel surface.

AFFILIATION: Microbiology Department, Pacific Northwest National Laboratory, 902 Battelle Blvd., Mail Stop P7-50, PO Box 999, Richland, WA 99352, USA. wwzhang22@gmail.com

Country: Germany

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MEDLINETA: Appl Microbiol Biotechnol

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