Pseudoroseicyclus tamaricis sp. nov., isolated from seashore sediment of a Tamarix chinensis forest and emended descriptions of the genus Pseudoroseicyclus Park et al. 2016

An aerobic, Gram-stain-negative, bacterium, designated CLL3-39 T was isolated from seashore sediment collected at a Tamarix chinensis forest in the Marine Ecology Special Reserve of Changyi, Shandong Province, PR China. Cells of strain CLL3-39 T were olive-shaped and no flagellum was observed. Strain CLL3-39 T grew optimally at 33 °C, pH 7.5 and salinity (sea salts) of 40 g l −1 . The main fatty acids in the cell membrane of strain CLL3-39 T comprised anteiso-C 15 : 0 (22.3 %), iso-C 15 : 0 (14.0 %), C 16 : 0 (9.2 %) and summed feature 8 (contains C 18 : 1 ω 7 c /C 18 : 1 ω 6 c . 26. 7 %). The main polar lipids of CLL3-39 T were phosphatidylglycerol, diphosphatidylglycerol and phosphatidylcholine. The respiratory quinone was Q10. The G+C content of the genomic DNA of strain CLL3-39 T was 69.6 mol%. The average nucleotide identity between CLL3-39 T and Pseudoroseicyclus aestuarii DB-4 T was 74.7 % and the in silico DNA–DNA hybridization value was 20.1 %. Phylogenetically, strain CLL3-39 T belonged to the genus Pseudoroseicyclus , branching with only one type strain P. aestuarii DB-4 T with 96.3 % 16S rRNA gene similarity, followed by Limimaricola cinnabarinus LL-001 T (95.2 %). Based on its phenotypic, phylogenetic and chemotaxonomic characteristics, we propose strain CLL3-39 T (=MCCC 1A14815 T = KCTC 72665 T ) as a representative of a novel species in the genus Pseudoroseicyclus , for which the name Pseudoroseicyclus tamaricis sp. nov. is proposed.