abstract
Deoxyribonucleic acid (DNA)-DNA hybridizations were carried out strains of Lactobacillus casei. Our results show that this type represents the time, is genomically very heterogeneous. Most strains, L. casei subsp. casei, together with members of L. casei subsp. alactosus, L. casei subsp. pseudoplantarum, and L. casei subsp. tolerans showed a high degree of DNA relatedness to each other but were different from the strain of L. casei subsp. casei. Strains of L. casei subsp. rhamnosus also formed a homogeneous group of genomically unrelated to all other members of the L. casei subspecies examined. Based on the present and previous findings, we propose that members of L. casei subsp. alactosus, L. casei subsp. pseudoplantarum, and L. casei subsp. tolerans and the majority of L. casei subsp. casei strains are given their own kind of status, for which we propose the name L. paracasei sp. November, L. paracasei subsp. paracasei (strain NCDO 151) and L. paracasei subsp. tolerans (type strain ATCC 25 599). We also suggest that L. casei subsp. rhamnosus be elevated to species status as L. rhamnosus sp. November (type strain, ATCC 7469).
Deoxyribonucleic acid (DNA)-DNA hybridizations were carried out strains of Lactobacillus casei. Our results show that this type represents the time, is genomically very heterogeneous. Most strains, L. casei subsp. casei, together with members of L. casei subsp. alactosus, L. casei subsp. pseudoplantarum, and L. casei subsp. tolerans showed a high degree of DNA relatedness to each other but were different from the strain of L. casei subsp. casei. Strains of L. casei subsp. rhamnosus also formed a homogeneous group of genomically unrelated to all other members of the L. casei subspecies examined. Based on the present and previous findings, we propose that members of L. casei subsp. alactosus, L. casei subsp. pseudoplantarum, and L. casei subsp. tolerans and the majority of L. casei subsp. casei strains are given their own kind of status, for which we propose the name L. paracasei sp. November, L. paracasei subsp. paracasei (strain NCDO 151) and L. paracasei subsp. tolerans (type strain ATCC 25 599). We also suggest that L. casei subsp. rhamnosus be elevated to species status as L. rhamnosus sp. November (type strain, ATCC 7469).
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