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- W1545370327 abstract "This chapter provides a survey of established molecular approaches as well as emerging ones for studying microbial communities in gastrointestinal systems. Whole-genome typing methods are cost-effective alternatives for assessing genetic relatedness. These molecular techniques provide more specificity than phenotypic identification of culturable microbes and include pulsed-field gel electrophoresis (PFGE), rep-PCR, multilocus sequence typing (MLST), and octamer-based genome scanning (OGBS). The genotyping method used in recent years for Enterobacteriaceae has been a PCR-based technique using primers targeting repetitive sequences (rep-PCR), which also produces numerous DNA fragments that are separable by electrophoresis. MLST is another PCR-enabled genotyping method that has found widespread use for subtyping a variety of pathogens. The technique is an extension of multilocus enzyme electrophoresis and was first described in 1998 using Neisseria meningitidis as an example. OBGS, a powerful method enabled by genome sequence information, was developed as a result of determining the complete genome sequence of Escherichia coli. Researchers using molecular community fingerprinting methods can rapidly infer the genetic composition or community structure following the analysis of a region of amplified DNA. All community fingerprinting methods begin with extraction of total genomic DNA from the sample. Direct DNA extraction followed by PCR amplification and subsequent restriction digestion is the basis for (terminal restriction fragment length polymorphism (T-RFLP). The greatest challenge to microbial community analysis is linking the community structure at the phylogenetic level with its metabolic potential and subsequent functionality in the environment being studied." @default.
- W1545370327 created "2016-06-24" @default.
- W1545370327 creator A5049894538 @default.
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- W1545370327 creator A5083622855 @default.
- W1545370327 date "2014-04-30" @default.
- W1545370327 modified "2023-09-25" @default.
- W1545370327 title "Molecular Methods To Study Complex Microbial Communities" @default.
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