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Study of a two species microbial community by an inferential comparative genomic analysis tool: Spatial Analytical Microbial Imaging

Study of a two species microbial community by an inferential comparative genomic analysis tool: Spatial Analytical Microbial Imaging

Authors :
Pei Zhang
Paloma Valverde
Douglas Daniel
Peter Fox
Source :
MethodsX, Vol 2, Iss C, Pp 331-339 (2015)
Publication Year :
2015
Publisher :
Elsevier, 2015.

Abstract

Most molecular fingerprinting techniques, including denaturing gradient gel electrophoresis (DGGE) [1], comparative genomic hybridization (CGH) [2], real-time polymerase chain reaction (RT-PCR) [3], destroy community structure and/or cellular integrity, therefore lost the info. of the spatial locus and the in situ genomic copy number of the cells. An alternative technique, fluorescence in situ hybridization (FISH) doesn't require sample disintegration but needs to develop specific markers and doesn't provide info. related to genomic copy number. Here, a microbial analysis tool, Spatial Analytical Microbial Imaging (SAMI), is described. An application was performed with a mixture of Synechocystis sp. PCC 6803 and E. coli K-12 MG1655. The intrinsic property of their genome, reflected by the average fluorescence intensity (AFI), distinguished them in 3D. And their growth rates were inferred by comparing the total genomic fluorescence binding area (GFA) with that of the pure culture standards. A 93% of accuracy in differentiating the species was achieved. • SAMI does not require sample disintegration and preserves the community spatial structure. • It measures the 3D locus of cells within the mixture and may differentiate them according to the property of their genome. • It allows assessment of the growth rate of the cells within the mixture by comparing their genomic copy number with that of the pure culture standards.

Details

Language :
English
ISSN :
22150161
Volume :
2
Issue :
C
Database :
Directory of Open Access Journals
Journal :
MethodsX
Publication Type :
Academic Journal
Accession number :
edsdoj.143f77da0169470a8f6939965c7b32ad
Document Type :
article
Full Text :
https://doi.org/10.1016/j.mex.2015.06.004