Subfamily: Comovirinae

Genus: Mersevirus

Distinguishing features

Similar to comovirins, cheraviruses, sadwaviruses, stralariviruses, and torradoviruses, the genome of merseviruses is bipartite. However, the RNA1 of merseviruses codes for a polyprotein that is proteolytically cleaved into six predicted proteins instead of the more conventional five proteins. The sixth protein located at the N-terminus of the polyprotein encoded by RNA1 codes a Ham1 domain with predicted inosine triphosphate pyrophosphatase (ITPase) activities.

Species List: Duplodnaviria

Virus names, the choice of exemplar isolates, and virus abbreviations, are not official ICTV designations
 Exemplar isolate of the species

Resources: Duplodnaviria

Figure 6 Duplodnaviria

Treefile (Newick format)

References: Duplodnaviria

Ackermann, H. W. (1998). Tailed bacteriophages: the order Caudovirales. Adv Virus Res 51, 135-201. [PubMed]

Ackermann, H. W. (2001). Frequency of morphological phage descriptions in the year 2000. Brief review. Arch Virol 146, 843-57. [PubMed]

Citation: Duplodnaviria

A summary of this ICTV Report chapter has been published as an ICTV Virus Taxonomy Profile article in the Journal of General Virology, and should be cited when referencing this online chapter as follows:

Evelien M. Adriaenssens, Ryan Cook, Valerian Dolja, Eugene V. Koonin, Mart Krupovic, Jens H. Kuhn, Cédric Lood, Alejandro Reyes Muñoz, Dann Turner, Arvind Varsani, Paola K. Vaz, Thomas Waltzek, Yuri I. Wolf, Natalia Yutin, F. Murilo Zerbini  (2025): ICTV Virus Taxonomy Profile: 2025, Journal of General Virology (2025) 106:002139

Authors: Duplodnaviria

Evelien M. Adriaenssens*
Microbes and Food Safety; Food, Microbiome and Health
Quadram Institute Bioscience
Rosalind Franklin Road
NR4 7UQ Norwich
United Kingdom
Email: [email protected] 

Ryan Cook
Food, Microbiome and Health
Quadram Institute Bioscience
Rosalind Franklin Road
NR4 7UQ Norwich
United Kingdom
Email: [email protected] 

Realm: Duplodnaviria

Evelien M. Adriaenssens, Ryan Cook, Valerian Dolja, Eugene V. Koonin, Mart Krupovic, Jens H. Kuhn, Cédric Lood, Alejandro Reyes Muñoz, Dann Turner, Arvind Varsani, Paola K. Vaz, Thomas Waltzek, Yuri I. Wolf, Natalia Yutin, F. Murilo Zerbini

The citation for this ICTV Report chapter is the summary published as Adriaenssens et al., (2025):

ICTV Virus Taxonomy Profile: Duplodnaviria 2025, Journal of General Virology, (2025) 106:002139

Duplodnaviria Table of Contents

Family: Caulimoviridae

Genus: Ruflodivirus

Subfamily: Nefertitivirinae

Genus: Phayathaivirus

Distinguishing features

Members of this genus infect Aeromonas veronii. The non-redundant part of the genomes of viruses in this genus is an average of 51 kbp (51.4 %G+C), with 64 gene coding sequences; no tRNAs are encoded.