April 21, 2020  |  

Complete genome sequence of Flavobacterium arcticum SM1502T, exhibiting adaption to the Arctic marine salty environment

Authors: Li, Yi and Tang, Bai-Lu and Ren, Xue-Bing and Dang, Yan-Ru and Sun, Lin-Lin and Zhang, Xi-Ying and Chen, Xiu-Lan and Qin, Qi-Long and Wang, Peng

Flavobacterium arcticum SM1502T, isolated from the surface seawater of King's Fjord, Svalbard, Arctic, is an aerobic, non-flagellated, rod-shaped and yellow-pigmented bacterium belonging to the family Flavobacteriaceae. It is the first isolated Arctic Flavobacterium bacterium. To date, no genomes of Flavobacterium species isolated from the Arctic region have been sequenced. Here, we reported the complete genomic compositions and metabolic features of F. arcticum SM1502T. The genome consists of 2,970,356?bp with an average GC content of 35.0%. A total of 2652 protein-coding sequences and 50 RNA genes were identified in the genome. SM1502T had lower protein pIs with higher ratios of acidic residues to basic residues compared to the relative bacteria and contains genes related to iron transport and organic osmoprotectant uptake, which could maintain cellular osmotic balance. These related genes and protein pI characteristics indicated that SM1502T has high salt tolerance and could accommodate the changing Arctic salty environments.

Journal: Marine genomics
DOI: 10.1016/j.margen.2019.03.005
Year: 2019

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