Corynebacterium suedekumii sp. nov and Corynebacterium breve sp. nov., isolated from raw cow’s milk

Author:

Baer Mareike Katharina1ORCID,Marke Gina1,Mehl Lena1,Hellmuth Ronja1,Bartholomäus Alexander2,Lipski André1

Affiliation:

1. University of Bonn, Institute of Nutritional and Food Science, Food Microbiology and Hygiene, Friedrich-Hirzebruch-Allee 7, 53115 Bonn, Germany

2. GFZ German Research Centre for Geosciences, Section Geomicrobiology, Potsdam, Germany

Abstract

Four Gram-positive, rod-shaped, none-sporeforming, non-motile isolates were obtained from various raw milk samples taken from the cooling tank on a research farm in Königswinter, Germany. Based on phylogenetic analysis of the 16S rRNA genes and whole genome sequences, all isolates were assigned to the genus Corynebacterium , but were divided in two different groups. All isolates contained C18 : 1 cis 9 and C16 : 0 as predominant fatty acids, as well as traces of C18 : 0. They all contained menaquinones MK-8 (H2) and MK-9 (H2) and produced mycolic acids characteristic for the majority of species belonging to the genus Corynebacterium . 16S rRNA gene sequence similarity values to the closest related type strains Corynebacterium humireducens DSM 45392T and Corynebacterium pilosum DSM 20521T were below 98.7 %, average nucleotide identity values were below 86 % and digital DNA–DNA-hybridization values were below 25 %, indicating that the isolates represent two novel species. The names Corynebacterium suedekumii sp. nov. and Corynebacterium breve sp. nov. are proposed, represented by the type strains LM112T (=DSM 116216T=HAMBI 3782T) and R4T (=DSM 116183T=HAMBI 3785T), respectively.

Publisher

Microbiology Society

Subject

General Medicine,Ecology, Evolution, Behavior and Systematics,Microbiology

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