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Int J Syst Evol Microbiol 58 (2008), 78-83; DOI  10.1099/ijs.0.65305-0
© 2008 International Union of Microbiological Societies

Nocardioides daphniae sp. nov., isolated from Daphnia cucullata (Crustacea: Cladocera)

Erika M. Tóth1, Zsuzsa Kéki1, Zalán G. Homonnay1, Andrea K. Borsodi1, Károly Márialigeti1 and Peter Schumann2

1 Eötvös Loránd University, Faculty of Science, Department of Microbiology, Pázmány Péter sétány 1/c, H-1117 Budapest, Hungary
2 DSMZ-German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, D-38124 Braunschweig, Germany

Correspondence
Erika M. Tóth
totherika{at}ludens.elte.hu

A Gram-positive, rod-shaped or coccoid, yellow-pigmented bacterial strain, D287T, was isolated from the water flea Daphnia cucullata (Crustacea: Cladocera) collected from Lake Balaton in Hungary. Phylogenetic analysis on the basis of 16S rRNA gene sequence comparisons revealed that the strain represented a distinct lineage within the cluster of the genera Nocardioides and Marmoricola. The following characteristics were consistent with the affiliation of strain D287T to the genus Nocardioides: peptidoglycan based on LL-2,6-diaminopimelic acid, MK-8(H4) as the major menaquinone, iso-C16 : 0 as the predominant cellular fatty acid, the presence of phosphatidylglycerol and diphosphatidylglycerol and a DNA G+C content of 69.9 mol%. Owing to characteristic differences in physiological traits and levels of 16S rRNA gene sequence similarity to its phylogenetically closest neighbours that were below 97 %, strain D287T is considered to represent a novel species of the genus Nocardioides, for which the name Nocardioides daphniae sp. nov. is proposed. The type strain is D287T (=DSM 18664T=CCM 7403T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain D287T is AM398438.






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