Klebsiella terrigena, a New Species from Soil and Water

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Abstract
DNA-DNA hybridization and numerical analysis of electrophoretic protein patterns were conducted to determine the taxonomic position of 37 K. pneumoniae-like strains from nonclinical origin (soil and water) and previously studied by numerical taxonomy. The DNA interrelatedness for 20 selected strains of group L was at least 87%, except for 2 strains (63 and 69%). Protein electrophoretograms indicated that at least 85% of the L strains constitute a genetically homogeneous group. The latter technique enabled the distinction of strains of group L from those of K. pneumoniae, K. oxytoca and an unnamed Klebsiella cluster (group K) related to K. pneumoniae and K. oxytoca. On the basis of their phenotypic characters, protein electrophoretic patterns and DNlA-DNA relatedness, it is proposed for these strains that the name K. terrigena sp. nov., with strain CIP 80-07 (= CUETM 77-176) as the type strain be established. The DNA of the strain was 49-64% homologous to K. oxytoca DNA, 48-63% to K. pneumoniae DNA and 51% to K. ozaenae DNA.