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Description of Trichococcus ilyis sp. nov. by combined physiological and in silico genome hybridization analyses

Lookup NU author(s): Professor Hans-Peter Klenk


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Species of the genus Trichococcus share high similarity of their 16S rRNA gene sequences (>99 %). Digital DNA-DNA hybridization values (dDDH) among type strains of all described species of the genus Trichococcus (T. flocculiformis DSM 2094(T), T. pasteurii DSM 2381(T), T. collinsii DSM 14526(T), T. palustris DSM 9172(T), and T. patagoniensisDSM 18806(T)) indicated that Trichococcus sp. strain R210(T) represents a novel species of the genus Trichococcus. The dDDH values showed a low DNA relatedness between strain R210(T) and all other species of the genus Trichococcus (23-32%). Cells of strain R210(T) were motile, slightly curved rods, 0.63-1.40 x 0.48-0.90 mu m and stained Gram-positive. Growth was optimal at pH 7.8 and at temperature of 30 degrees C. Strain R210(T) could utilize several carbohydrates, and the main products from glucose fermentation were lactate, acetate, formate and ethanol. The genomic DNA G+C content of strain R210(T) was 47.9 mol%. Based on morphological, physiological and biochemical characteristics along with measured dDDH values for all species of the genus Trichococcus, it is suggested that strain R210(T) represents a novel species within the genus Trichococcus, for which the name Trichococcus ilyis sp. nov. is proposed. The type strain is R210(T) (= DSM 22150(T) = JCM 31247(T)).

Publication metadata

Author(s): Strepis N, Sanchez-Andrea I, van Gelder AH, van Kruistum H, Shapiro N, Kyrpides N, Goker M, Klenk HP, Schaap P, Stams AJM, Sousa DZ

Publication type: Article

Publication status: Published

Journal: International Journal of Systematic and Evolutionary Microbiology

Year: 2016

Volume: 66

Pages: 3957-3963

Print publication date: 01/10/2016

Online publication date: 01/10/2016

Acceptance date: 07/07/2016

ISSN (print): 1466-5026

ISSN (electronic): 1466-5034

Publisher: Microbiology Society


DOI: 10.1099/ijsem.0.001294


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Funder referenceFunder name
024.002.002Gravitation grant of the Netherlands Ministry of Education, Culture and Science
323009European Research Council under the European Union's Seventh Framework Programme (FP)/ERC
DE-AC02-05CH11231Office of Science of the DOE