A microorganism having the reduction or loss of a 4-hydroxybenzoate-polyprenyltransferase activity or a 2-octapernylphenol 2-octaprenyl-6-methoxyphenol;flavin reductase activity and capable of producing lactic acid, particularly a microorganism having chromosomal DNA having the deletion of a part or the entirety of a gene encoding a protein having a 4-hydroxybenzoate-polyprenyltransferase activity or a protein having a 2-octapernylphenol 2-octaprenyl-6-methoxyphenol;flavin reductase activity; and a process for production of lactic acid using the microorganism.
