Exiguobacterium aquaticum sp. nov., a new member of the genus Exiguobacterium.

Raichand, Revti and Pareek, Siddhika and Singh, Nitin Kumar and Mayilraj, Shanmugam (2011) Exiguobacterium aquaticum sp. nov., a new member of the genus Exiguobacterium. International journal of systematic and evolutionary microbiology. ISSN 1466-5034 (In Press)

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Abstract

A Gram positive, motile, short rod shaped, orange pigmented bacterium strain IMTB-3094T, isolated from water sample, collected from Tikkar Tal Lake, Haryana and was subjected to a detailed polyphasic taxonomic study. Strain IMTB-3094T, matched with most of the phenotypic and chemotaxonomic properties of the genus Exiguobacterium and represented novel species. According to 16S rRNA gene sequence analysis, strain IMTB-3094T belonged to the genus Exiguobacterium. The strain IMTB-3094T exhibited highest 16S rRNA gene sequence similarity with Exiguobacterium mexicanum MTCC 7759T (99.5%) followed by Exiguobacterium aurantiacum MTCC 6414T (99.1%), Exiguobacterium aestuarii MTCC 7750T (98.0%), Exiguobacterium profundum MTCC 10851T (98.0%) and Exiguobacterium marinum MTCC 7751T (98.0%). The G+C content of the genomic DNA of strain IMTB-3094T was 53.2 mol %, while DNA-DNA relatedness study confirmed that it represents a novel species. The major fatty acids of the strain iso-C17:0 (16.1%), anteiso-C13:0 (19.0%), iso-C13: 0 (11.9%), iso-C15:0 (9.8%) and iso E C17:1 (12.7%). Predominant quinones are MK-7 (55.0%), MK-6 (26.0%) and MK-8 (12.0%) in minor amount. Based on phenotypic, chemotaxanomic and phylogenetic analysis, the strain IMTB-3094T should be classified as novel species of the genus Exiguobacterium for which the name Exiguobacterium aquaticum sp. nov. is proposed. The type strain is IMTB-3094T (=MTCC 10958T= JCM 17977T).

Item Type:	Article
Additional Information:	Copyright of this article belongs to International Union of Microbiological Societies
Subjects:	Q Science > QR Microbiology
Depositing User:	Dr. K.P.S.Sengar
Date Deposited:	09 Dec 2011 14:12
Last Modified:	09 Dec 2011 14:12
URI:	http://crdd.osdd.net/open/id/eprint/442

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