This study focuses on the phylogenetic analysis of previously unclassified tombus-like viruses, which are characterized by the presence of homologs of the suppressor protein p19. The primary objectives of this research were to investigate the evolutionary relationships among these viruses and to explore the impact of suppressor proteins and recombination events on their evolution. A dataset comprising 94 viral sequences was analyzed to achieve these goals. The phylogenetic analysis revealed the presence of two distinct clusters within the tombus-like virus group. One cluster consisted of viruses that encoded p19-like RNA suppressors, while the other cluster comprised viruses encoding p14-like suppressors. Based on these findings, we propose the classification of PGT-pt108 as an isolate of carnation Italian ringspot virus (CIRV), and both Tombusviridae sp. s48-k141_139792 and Tombusviridae sp. s51-k141_185213 as isolates of tomato bushy stunt virus (TBSV). Furthermore, this study suggests the establishment of two new genera within the family Tombusviridae, based on the observed divergence and distinct characteristics of these tombus-like viruses. Through the analysis of recombination events, we provide insights into the interspecies movement of CIRV, which is reflected in its phylogenetic positioning. This research contributes to our understanding of the evolutionary dynamics and classification of tombus-like viruses, shedding light on the role of suppressor proteins and recombination events in their evolution and interspecies transmission.

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00705-023-05909-0DOI Listing

Publication Analysis

Top Keywords

tombus-like viruses
16
recombination events
16
phylogenetic analysis
12
analysis recombination
8
suppressor protein
8
suppressor proteins
8
proteins recombination
8
events evolution
8
viruses
7
tombus-like
5

Similar Publications

The mosquito is a prominent vector for arboviruses, but the breadth of mosquito viruses that infects this specie is not fully understood. In the broadest global survey to date of over 200 small RNA samples, we detected viral small interfering RNAs (siRNAs) and Piwi interacting RNAs (piRNAs) arising from mosquito viruses. We confirmed that most academic laboratory colonies of lack persisting viruses, yet two commercial strains were infected by a novel tombus-like virus.

View Article and Find Full Text PDF

A Statovirus-like virus from respiratory tracts of patients, China.

J Med Virol

June 2024

Institute of EcoHealth, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China.

Article Synopsis
  • Scientists discovered new viruses called Restviruses in the lungs of patients who were sick with a type of coronavirus.
  • These Restviruses are similar to another group of viruses known as Statoviruses, which were found in the stomachs of animals.
  • Researchers think that studying these new viruses could help us understand how they affect people's health and where they come from.
View Article and Find Full Text PDF

Trypanosomatids (Euglenozoa) are a diverse group of unicellular flagellates predominately infecting insects (monoxenous species) or circulating between insects and vertebrates or plants (dixenous species). Monoxenous trypanosomatids harbor a wide range of RNA viruses belonging to the families , , and a putative group of tombus-like viruses. Here, we focus on the subfamily Blastocrithidiinae, a previously unexplored divergent group of monoxenous trypanosomatids comprising two related genera: and .

View Article and Find Full Text PDF

This study focuses on the phylogenetic analysis of previously unclassified tombus-like viruses, which are characterized by the presence of homologs of the suppressor protein p19. The primary objectives of this research were to investigate the evolutionary relationships among these viruses and to explore the impact of suppressor proteins and recombination events on their evolution. A dataset comprising 94 viral sequences was analyzed to achieve these goals.

View Article and Find Full Text PDF
Article Synopsis
  • Trypanosomatids, such as Leptomonas pyrrhocoris, are parasitic flagellates that can harbor various RNA viruses, some of which may impact diseases in humans, like leishmaniasis.
  • The study found that 60% of the surveyed cultures of L. pyrrhocoris contained multiple double-stranded RNA fragments and identified four viral groups, including both previously known and new species.
  • The results imply notable viral diversity within a single protist species, showcasing the potential for viral reassortment and evolutionary patterns in trypanosomatid-associated viruses.
View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!