Cyanosiphovirus S-ESS1 Infecting Marine Synechococcus (Chroococcales) Almost Shows No Genetic Relationship to Known Cyanosiphoviruses
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
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
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Preferred citation for this article:
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
Genomics and Applied Biology
• Volume 8