The invention relates to the technical field of
bioinformatics and
microbial genome analysis, in particular to a food-borne pathogenic bacterium
typing method based on a wgMLST technology, which comprises the following steps of: preliminarily comparing a
genome sequence with a constructed lightweight wgMLST
database, and aiming at imperfectly matched
gene loci in a comparison result, identifying the genomic sequence in the lightweight wgMLST
database and identifying the genomic sequence in the lightweight wgMLST
database. And expanding or
cutting off the sequence according to the comparison region, predicting and extracting a potential
open reading frame (ORF) sequence, and carrying out dictionary comparison on the potential ORF sequence until matching succeeds, thereby accurately judging the corresponding number of the
allele. And traversing all imperfect matching sites and repeating the process to finally obtain a complete wgMLST
typing spectrum. According to the method, a wgMLST
typing task of large-scale high-
throughput sequencing data can be efficiently processed; the complete analysis speed of single
pathogenic bacteria is increased by nearly 10 times; a complete
allele dictionary is introduced for secondary comparison and error correction, and it is ensured that imperfect matching site typing is correct and high in accuracy; and a
technical support is provided for high-
throughput strain detection and typing.