Serratia ureilytica sp. nov., a novel urea-utilizing species (original) (raw)

2005, International Journal of Systematic and Evolutionary Microbiology

A Gram-negative, rod-shaped, urea-dissolving and non-spore-forming bacterium, designated strain NiVa 51 T , was isolated from water of the River Torsa in Hasimara, Jalpaiguri district, West Bengal, India. On the basis of 16S rRNA gene sequence similarity, strain NiVa 51 T was shown to belong to the c-Proteobacteria and to be related to Serratia marcescens subsp. sakuensis (98?35 %) and S. marcescens subsp. marcescens (98?30 %); however, strain NiVa 51 T exhibited only 43?7 % similarity to S. marcescens by DNA-DNA hybridization. The G+C content of the genomic DNA of the isolate was 60 mol%. Both biochemical characteristics and fatty acid analysis data supported the affiliation of strain NiVa 51 T to the genus Serratia. Furthermore, strain NiVa 51 T was found to utilize urea as nitrogen source. The results of DNA-DNA hybridization as well as physiological and biochemical tests allowed genotypic and phenotypic differentiation of strain NiVa 51 T from recognized Serratia species. Strain NiVa 51 T therefore represents a novel species, for which the name Serratia ureilytica sp. nov. is proposed, with type strain NiVa 51 T (=LMG 22860 T =CCUG 50595 T ).

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