The invention provides an
engineering strain for synthesizing L-
methionine by using
ethylene glycol and application of the
engineering strain. The
engineering strain comprises an expression
plasmid vector or an expression
plasmid vector combination, the vector or combination comprises a first group of polynucleotides and a second group of polynucleotides, and the first group of polynucleotides comprises at least one
polynucleotide encoding an
enzyme promoting
ethylene glycol utilization; the second set of polynucleotides comprising at least one
polynucleotide encoding an L-
methionine synthesis pathway
enzyme; and a backbone
plasmid capable of autonomously replicating in a host
cell. By introducing the
ethylene glycol utilization
gene, not only is the
utilization rate of glucose improved, but also the yield of L-
methionine is improved; meanwhile, by overexpressing or strengthening a plurality of L-methionine biosynthetic pathway related genes from different sources and knocking out or weakening L-methionine
degradation pathway or transcription inhibition factor related genes, efficient
fermentation production of L-methionine is realized.