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Multiple novel filamentous phages detected in the cloacal swab samples of birds using viral metagenomics approach
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Multiple novel filamentous phages detected in the cloacal swab samples of birds using viral metagenomics approach
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Multiple novel filamentous phages detected in the cloacal swab samples of birds using viral metagenomics approach
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Journal Article
Multiple novel filamentous phages detected in the cloacal swab samples of birds using viral metagenomics approach
2021
Overview
Members of the family
Inoviridae
(inoviruses) are characterized by their unique filamentous morphology and infection cycle. The viral genome of inovirus is able to integrate into the host genome and continuously releases virions without lysing the host, establishing chronic infection. A large number of inoviruses have been obtained from microbial genomes and metagenomes recently, but putative novel inoviruses remaining to be identified. Here, using viral metagenomics, we identified four novel inoviruses from cloacal swab samples of wild and breeding birds. The circular genome of those four inoviruses are 6732 to 7709 nt in length with 51.4% to 56.5% GC content and encodes 9 to 13 open reading frames, respectively. The zonula occludens toxin gene implicated in the virulence of pathogenic host bacteria were identified in all four inoviruses and shared the highest amino acid sequences identity (< 37.3%) to other reference strains belonging to different genera of the family
Inoviridae
and among themselves. Phylogenetic analysis indicated that all the four inoviruses were genetically far away from other strains belonging to the family
Inoviridae
and formed an independent clade. According to the genetic distance-based criteria, all the four inoviruses identified in the present study respectively belong to four novel putative genera in the family
Inoviridae
.
Publisher
BioMed Central,BioMed Central Ltd,Springer Nature B.V,BMC
