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Cronobacter gen. nov., a new genus to accommodate the biogroups of Enterobacter sakazakii, and proposal of Cronobacter sakazakii gen. nov. comb. nov., C. malonaticus sp. nov., C. turicensis sp. nov., C. muytjensii sp. nov., C. dublinensis sp. nov., Cronobacter genomospecies 1, and of three subspecies, C. dublinensis sp. nov. subsp. dublinensis subsp. nov., C. dublinensis sp. nov. subsp. lausannensis subsp. nov., and C. dublinensis sp. nov. subsp. lactaridi subsp. nov.


Iversen, C; Mullane, N; McCardell, B; Tall, B D; Lehner, A; Fanning, S; Stephan, R; Joosten, H (2008). Cronobacter gen. nov., a new genus to accommodate the biogroups of Enterobacter sakazakii, and proposal of Cronobacter sakazakii gen. nov. comb. nov., C. malonaticus sp. nov., C. turicensis sp. nov., C. muytjensii sp. nov., C. dublinensis sp. nov., Cronobacter genomospecies 1, and of three subspecies, C. dublinensis sp. nov. subsp. dublinensis subsp. nov., C. dublinensis sp. nov. subsp. lausannensis subsp. nov., and C. dublinensis sp. nov. subsp. lactaridi subsp. nov. International Journal of Systematic and Evolutionary Microbiology, 58(6):1442-1447.

Abstract

Enterobacter sakazakii is an opportunistic pathogen that can cause infections in neonates. This study further clarifies the taxonomy of isolates described as E. sakazakii and completes the description of the proposed reclassification of these organisms as novel species and subspecies within a proposed novel genus, Cronobacter. The species was first defined in 1980, however recent polyphasic taxonomic analysis has determined that this group of organisms consists of several genomospecies. In this study the phenotypic descriptions of the proposed novel species are expanded using Biotype 100 and Biolog Phenotype MicroArray™. Further DNA-DNA hybridization experiments showed that malonate positive strains within the C. sakazakii genomospecies represent a distinct species not a subspecies. DNA-DNA hybridizations also determined that phenotypically different strains within proposed Cronobacter dublinensis sp. nov. belong to the same species and can be considered novel subspecies.
Based on these analyses the following alternative classifications are proposed; Cronobacter sakazakii gen. nov. comb. nov., type strain ATCC 29544T (=NCTC 11467T); C. malonaticus sp. nov., type strain CDC 1058-77T (= LMG 23826T = DSMZ 18702T); C. turicensis sp. nov., type strain z3032T (= LMG 23827T = DSMZ 18703T); C. muytjensii sp. nov., type strain ATCC 51329T (= CIP 103581T); C. dublinensis sp. nov., type strain DES187T (= LMG 23823T = DSMZ 18705T); C. dublinensis sp. nov. subsp. dublinensis subsp. nov., type strain DES187T; C. dublinensis sp. nov. subsp. lausannensis subsp. nov., type strain E515T (= LMG 23824 = DSMZ 18706T); and C. dublinensis sp. nov. subsp. lactaridi subsp. nov. type strain E464T (= LMG 23825T = DSMZ 18707T).

Enterobacter sakazakii is an opportunistic pathogen that can cause infections in neonates. This study further clarifies the taxonomy of isolates described as E. sakazakii and completes the description of the proposed reclassification of these organisms as novel species and subspecies within a proposed novel genus, Cronobacter. The species was first defined in 1980, however recent polyphasic taxonomic analysis has determined that this group of organisms consists of several genomospecies. In this study the phenotypic descriptions of the proposed novel species are expanded using Biotype 100 and Biolog Phenotype MicroArray™. Further DNA-DNA hybridization experiments showed that malonate positive strains within the C. sakazakii genomospecies represent a distinct species not a subspecies. DNA-DNA hybridizations also determined that phenotypically different strains within proposed Cronobacter dublinensis sp. nov. belong to the same species and can be considered novel subspecies.
Based on these analyses the following alternative classifications are proposed; Cronobacter sakazakii gen. nov. comb. nov., type strain ATCC 29544T (=NCTC 11467T); C. malonaticus sp. nov., type strain CDC 1058-77T (= LMG 23826T = DSMZ 18702T); C. turicensis sp. nov., type strain z3032T (= LMG 23827T = DSMZ 18703T); C. muytjensii sp. nov., type strain ATCC 51329T (= CIP 103581T); C. dublinensis sp. nov., type strain DES187T (= LMG 23823T = DSMZ 18705T); C. dublinensis sp. nov. subsp. dublinensis subsp. nov., type strain DES187T; C. dublinensis sp. nov. subsp. lausannensis subsp. nov., type strain E515T (= LMG 23824 = DSMZ 18706T); and C. dublinensis sp. nov. subsp. lactaridi subsp. nov. type strain E464T (= LMG 23825T = DSMZ 18707T).

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:05 Vetsuisse Faculty > Institute of Food Safety and Hygiene
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Language:English
Date:June 2008
Deposited On:03 Dec 2008 10:20
Last Modified:05 Apr 2016 12:32
Publisher:Society for General Microbiology
ISSN:1466-5026
Publisher DOI:10.1099/ijs.0.65577-0
PubMed ID:18523192

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