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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 69, Issue 2

Paracoccus halotolerans sp. nov., isolated from a salt lake Free

Abstract

A novel Gram-stain-negative, aerobic, non-motile, coccus-shaped bacterium, designated CFH 90064, was isolated from a salt lake sediment sample collected from Yuncheng city, Shanxi province, PR China. 16S rRNA gene sequence comparisons and phylogenetic analyses showed that the strain belonged to the genus Paracoccus and clustered with Paracoccus zeaxanthinifaciens R-1512 (98.2 % similarity), Paracoccus homiensis DD-R11 (97.6 % similarity) and Paracoccus fistulariae 22–5 (96.5 % similarity), respectively. Growth of strain CFH 90064 was observed at 10–37 °C, pH 6.0–9.0 and with NaCl concentrations of up to 6.0 % (w/v). Strain CFH 90064 contained Q-10 as the only isoprenoid quinone, and the major fatty acid was C18 : 1ω7c. Polar lipids of strain CFH 90064 comprised diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine, an unidentified glycolipid, an unidentified aminolipid and an unidentified phospholipid. The genome of strain CFH 90008 was 3.75 Mbp with a DNA G+C content of 65.1 %. Based on the phylogenetic analyses, low average nucleotide identity results, chemotaxonomic characteristics and differential physiological properties, strain CFH 90064 could not be classified into any recognized species of the genus Paracoccus , suggesting that this strain represents a novel species, for which the name Paracoccus halotolerans sp. nov. is proposed. The type strain is CFH 90064 (=CCTCC AB 2016131=DSM 103234).

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Keyword(s): Paracoccus halotolerans sp. nov , polyphasic taxonomy and Yuncheng salt lake
© 2019 IUMS
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2018-12-20
2024-04-26
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Paracoccus halotolerans sp. nov., isolated from a salt lake
Int J Syst Evol Microbiol 69, 523 (2019); https://doi.org/10.1099/ijsem.0.003190
/content/journal/ijsem/10.1099/ijsem.0.003190
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