Ying Han¹ , Yan Zhang² , Junyi Zhao^1,2 , Kai Cheng^1,2

1 Hubei Key Laboratory of Ecological Restoration for River-Lakes and Algal Utilization, College of Resources and Environmental Engineering, Hubei University of Technology, Wuhan 430068, China
2 Department of Life Sciences, Huazhong Normal University, Wuhan 430079, China
Author    Correspondence author
Genomics and Applied Biology, 2017, Vol. 8, No. 2   doi: 10.5376/gab.2017.08.0002
Received: 16 Mar., 2017    Accepted: 25 Apr., 2017    Published: 12 May, 2017

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Han Y., Zhang Y., Zhao Y.J. and Cheng K., 2017, Cyanosiphovirus S-ESS1 infecting marine Synechococcus (Chroococcales) almost shows no genetic relationship to known cyanosiphoviruses, Genomics and Applied Biology, 8(2): 8-15 (doi: 10.5376/gab.2017.08.0002)

Cyanosiphoviruses are a group of viruses with long tail that infect cyanobacteria. In this study, we described a cyanosiphovirus S-ESS1 infecting Synechococcus SJ01, both isolated from samples of coastal waters from the East China Sea. The genome of this cyanosiphovirus had a 60,362 bp genetic map, with 282 predicted open reading frames (ORFs), among which only 56 ORFs had homologues in Genbank. According to the result of BLASTP, S-ESS1 had no ORF with any similarity to the eight known cyanosiphoviruses. Moreover, according to the phylogenetic tree of TerL, S-ESS1 was not closely related to known cyanosiphoviruses either, indicating a low genetic homology level of TerL, further proofing the biological diversity of cyanosiphovirus S-ESS1. Cyanosiphovirus S-ESS1 shared common host with reported cyanosiphoviruses S-CBS1, S-CBS2, S-CBS3, S-CBS4 and KBS2A, but as the only cyanosiphovirus separated from East China Sea, regional distribution might contribute to such genetic differences. Cyanosiphovirus S-ESS1’s genetic characteristics provided an evidence for the study of the common origin of cyanophage and bacteriophage.

Cyanosiphovirus; Biological diversity; Genome resemblance; Regional distribution