Isolation and characterization of Kingella negevensis sp. Nov., a novel kingella species detected in a healthy paediatric population

Nawal El Houmami, Sofiane Bakour, Janek Bzdrenga, Jaishiram Rathored, Hervé Seligmann, Catherine Robert, Nicholas Armstrong, Jacques Schrenzel, Didier Raoult, Pablo Yagupsky, Pierre Edouard Fournier

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

We herein report the isolation and characterization of 21 Gram-stain-negative strains cultivated from the oropharynx of healthy children in Israel and Switzerland. Initially described as small colony variants of Kingella kingae, phenotypic analysis, biochemical analysis, phylogenetic analysis based on sequencing of the partial 16S rRNA gene and five housekeeping genes (abcZ, adk, G6PD, groEL and recA), and whole genome sequencing and comparison between members of the genera Kingella and Neisseria provided evidence for assigning them to the genus Kingella. Cellular fatty acids included important amounts of C12:0, C14:0, C16:0 and C16:1n7. Digital DNA–DNA hybridization between the isolates Sch538T and K. kingae ATCC 23330T revealed relatedness of 19.9 %. Comparative analysis of 16S rRNA gene sequences available in GenBank allowed matches to strains isolated in the USA, suggesting a wider geographical distribution. A novel species named Kingella negevensis sp. nov. is proposed, as most strains have been isolated in the Negev, a desert region of southern Israel. The type strain is Sch538T (=CCUG 69806T=CSUR P957).

Original languageEnglish
Pages (from-to)2370-2376
Number of pages7
JournalInternational Journal of Systematic and Evolutionary Microbiology
Volume67
Issue number7
DOIs
StatePublished - 1 Jul 2017
Externally publishedYes

Keywords

  • Genomics
  • Kingella kingae
  • Kingella negevensis
  • Neisseriaceae
  • Paediatrics

ASJC Scopus subject areas

  • Microbiology
  • Ecology, Evolution, Behavior and Systematics

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