Terrimonas pekingensis sp. nov., isolated from bulking sludge, and emended descriptions of the genus Terrimonas, Terrimonas ferruginea, Terrimonas lutea and Terrimonas aquatica
2013
Jin, Decai | Wang, Ping | Bai, Zhihui | Jin, Bo | Yu, Zhisheng | Wang, Xinxin | Zhuang, Guoqiang | Zhang, Hongxun
A Gram-negative, strictly aerobic, non-motile and non-spore-forming rod that produced white, viscous colonies, designated QHT, was isolated from bulking sludge collected from a municipal wastewater treatment plant in Beijing, China. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain QHT belonged to the genus Terrimonas and shared 96.3 % sequence similarity with Terrimonas lutea DYT, 94.1 % with Terrimonas ferruginea ATCC 13524T and 93.8 % with Terrimonas aquatica RIB1-6T. Strain QHT contained iso-C15 : 0, summed feature 3 (comprising one or more of C16 : 1ω7c, C16 : 1ω6c and iso-C15 : 0 2-OH) and iso-C15 : 1 G as the predominant fatty acids. The predominant polar lipid of strain QHT and members of the genus Terrimonas was phosphatidylethanolamine. The major isoprenoid quinone of strain QHT was MK-7 and the DNA G+C content was 41.0 mol%. DNA–DNA relatedness between strain QHT and T. lutea BCRC 17944T, T. ferruginea BCRC 17943T and T. aquatica BCRC 17941T was 32, 23 and 22 %, respectively. On the basis of phylogenetic inference, differential phenotypic data and low DNA–DNA relatedness with members of the genus Terrimonas, strain QHT represents a novel species, for which the name Terrimonas pekingensis sp. nov. is proposed. The type strain is QHT ( = CICC 10452T = NCCB 100397T). The descriptions of the genus Terrimonas and T. ferruginea, T. lutea and T. aquatica are also emended.
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