Sphingomonas crocodyli sp. nov., isolated from a crocodile pond.

Abstract:

:Strain CCP-7T, isolated from a freshwater pond in Taiwan, was characterized using a polyphasic taxonomy approach. Phylogenetic analyses based on 16S rRNA gene sequences and coding sequences of 92 protein clusters indicated that strain CCP-7T formed a phylogenetic lineage in the genus Sphingomonas. Strain CCP-7T was most closely related to Sphingomonas starnbergensis 382T and Sphingomonas naphthae DKC-5-1T with 96.2 % 16S rRNA gene sequence similarity. Strain CCP-7T showed 65.5-76.7 % average nucleotide identity and 20.2-22.5 % digital DNA-DNA hybridization identity with the strains of other related Sphingomonas species. Cells were Gram-stain-negative, aerobic, motile, rod-shaped and formed light orange-coloured colonies. Optimal growth occurred at 30 °C, pH 6 and in the absence of NaCl. The major fatty acid of strain CCP-7T was C18 : 1ω7c. The polar lipid profile consisted of phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, phosphatidylmonomethylethanolamine, three uncharacterized sphingoglycolipids, two uncharacterized phospholipids and six uncharacterized lipids. The predominant polyamine was homospermidine. The only isoprenoid quinone was Q-10. Genomic DNA G+C content of strain CCP-7T was 64.5 %. On the basis of phenotypic and genotypic properties and phylogenetic inference, strain CCP-7T should be classified in a novel species of the genus Sphingomonas, for which the name Sphingomonas crocodyli sp. nov. is proposed. The type strain is CCP-7T (=BCRC 81096T=LMG 30311T=KCTC 62190T).

authors

Sheu SY,Xie YR,Kwon SW,Sheu C,Chen WM

doi

10.1099/ijsem.0.003455

subject

Has Abstract

pub_date

2019-07-01 00:00:00

pages

2153-2160

issue

7

eissn

1466-5026

issn

1466-5034

journal_volume

69

pub_type

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