Abstract
A Gram-stain-negative, rod-shaped bacterium, designated HB171785T, was isolated from soil sample collected from Qishui Bay, Hainan, China. The strain grew optimally at pH 7-8, 37-40°C and with NaCl 3-4%. The predominant isoprenoid quinone was found to be Q-8 and the major fatty acids were C16:0, C16:1 ω7c/C16:1 ω6c, C18:1 ω7c/C18:1 ω6c and C12:0 3OH. The polar lipids contained diphosphatidylglycerol, phosphatidylglycerol, and phosphatidylethanolamine. The size of the draft genome was 4.32 Mbp with G + C content 49.7%. Phylogenetic analysis of 16S rRNA gene sequence indicated that the closest phylogenetically related species were Neiella marina j221T, "Neiella holothuriorum" 126 and Echinimonas agarilytica KMM 6351T with the similarities of 98.2, 96.0 and 95.0%, respectively. The phylogenetic tree based on 16S rRNA gene and phylogenomic tree based on core genome showed that strain HB171785T clustered together with N. marina j221T, with the highest values of average nucleotide identity (82.9%) and digital DNA-DNA hybridization (25.4%). The combined phylogenetic relatedness, phenotypic and genotypic features supported the conclusion that strain HB171785T represents a novel species of the genus Neiella, for which the name Neiella litorisoli sp. nov. is proposed. The type strain is HB171785T (= MCCC 1K04625T = KCTC 82319T). In addition, Echinimonadaceae fam. nov. in the order Alteromonadales was proposed.
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