Abstract
Fluorescent amplified fragment length polymorphism (fAFLP) is based on the selective PCR amplification of restriction fragments from a digest of total genomic DNA. Genomic DNA extracted from a purified bacterial isolate is completely digested with two endonucleases generating fragments which are ligated to specific double-stranded adaptors. The ligated fragments are then amplified by PCR using fluorescently labelled primers. Fluorescent amplified fragments are separated by size on an automated sequencer with a size standard. fAFLP is a rapid, highly reproducible technique which can be used to discriminate and subtype Listeria monocytogenes strains.
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