Abstract:
:The applicability of a multilocus sequence analysis (MLSA)-based identification system for lactobacilli was evaluated. Two housekeeping genes that code for the phenylalanyl-tRNA synthase alpha-subunit (pheS) and RNA polymerase alpha-subunit (rpoA) were sequenced and analysed for members of the Lactobacillus salivarius species group. The type strains of Lactobacillus acidipiscis and Lactobacillus cypricasei were investigated further using a third gene that encodes the alpha-subunit of ATP synthase (atpA). The MLSA data revealed close relatedness between L. acidipiscis and L. cypricasei, with 99.8-100 % pheS, rpoA and atpA gene sequence similarities. Comparison of the 16S rRNA gene sequences of the type strains of the two species confirmed the close relatedness (99.8 % gene sequence similarity) between the two taxa. Similar phenotypes and high DNA-DNA binding values in the range of 84 to 97.5 % confirmed that L. acidipiscis and L. cypricasei are synonymous species. On the basis of the present study, it is proposed that Lactobacillus cypricasei is a later heterotypic synonym of Lactobacillus acidipiscis.
journal_name
Int J Syst Evol Microbiolauthors
Naser SM,Vancanneyt M,Hoste B,Snauwaert C,Swings Jdoi
10.1099/ijs.0.64229-0subject
Has Abstractpub_date
2006-07-01 00:00:00pages
1681-1683issue
Pt 7eissn
1466-5026issn
1466-5034journal_volume
56pub_type
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