1887

Abstract

A Gram-stain-negative, aerobic, motile, yellow-pigmented, rod-shaped with a single polar flagellum bacterial strain, designated strain DHG54, was isolated from a forest soil sample of Dinghushan Biosphere Reserve, Guangdong Province, China. Strain DHG54 grew at 12–37 °C (optimum, 28 °C), pH 4.5–8.0 (optimum, pH 6.0–7.0) and in the presence of 0–3.0 % (w/v) NaCl (optimum, 0–1.5 %, w/v). Based on 16S rRNA gene sequence analysis, strain DHG54 formed a clade with the members of the genus Dyella and showed highest sequence similarities of 98.2 % to Dyella japonica DSM 16301 and Dyella terrae KACC 12748. This was also supported by phylogenetic analysis based on the concatenated partial gyrB, lepA and recA housekeeping gene sequences. DNA–DNA hybridization results between strain DHG54 and closely related Dyella species were all lower than 70 %. Ubiquinone-8 was the only respiratory quinone, and iso-C15 : 0, iso-C17 : 0 and iso-C17 : 1  ω9c were major fatty acids. The DNA G+C content of strain DHG54 was 65.4 mol%. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol. On the basis of the polyphasic characterization results presented here, strain DHG54 represents a novel species of the genus Dyella , for which the name Dyella solisilvae sp. nov. (type strain DHG54=GDMCC 1.1187 = LMG 30091) is proposed.

Keyword(s): Dyella , genome , phylogeny , solisilvae and taxonomy
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/content/journal/ijsem/10.1099/ijsem.0.003218
2019-01-04
2019-10-16
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