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Cui Y, Li S, Xu W, Xie J, Wang D, Hou L, Zhou J, Feng X, Liu J. Intra- and inter-host origin, evolution dynamics and spatial-temporal transmission characteristics of circoviruses. Front Immunol 2024; 15:1332444. [PMID: 39156896 PMCID: PMC11327096 DOI: 10.3389/fimmu.2024.1332444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 07/22/2024] [Indexed: 08/20/2024] Open
Abstract
Introduction Since their identification in 1974, circoviruses have caused clinicopathological diseases in various animal species, including humans. However, their origin, transmission, and genetic evolution remain poorly understood. Methods In this study, the genome sequences of circovirus were obtained from GenBank, and the Bayesian stochastic search variable selection algorithm was employed to analyzed the evolution and origin of circovirus. Results Here, the evolutionary origin, mode of transmission, and genetic recombination of the circovirus were determined based on the available circovirus genome sequences. The origin of circoviruses can be traced back to fish circovirus, which might derive from fish genome, and human contributes to transmission of fish circovirus to other species. Furthermore, mosquitos, ticks, bats, and/or rodents might play a role as intermediate hosts in circovirus intra- and inter-species transmission. Two major lineages (A and B) of circoviruses are identified, and frequent recombination events accelerate their variation and spread. The time to the most recent common ancestor of circoviruses can be traced back to around A.D. 600 and has been evolving at a rate of 10-4 substitutions site-1 year-1 for a long time. Discussion These comprehensive findings shed light on the evolutionary origin, population dynamics, transmission model, and genetic recombination of the circovirus providing valuable insights for the development of prevention and control strategies against circovirus infections.
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Affiliation(s)
- Yongqiu Cui
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Siting Li
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Weiying Xu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Jiali Xie
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Dedong Wang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Lei Hou
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Jianwei Zhou
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Xufei Feng
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Jue Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
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2
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Gontier N. Situating physiology within evolutionary theory. J Physiol 2024; 602:2401-2415. [PMID: 37755322 DOI: 10.1113/jp284410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/12/2023] [Indexed: 09/28/2023] Open
Abstract
Traditionally defined as the science of the living, or as the field that beyond anatomical structure and bodily form studies functional organization and behaviour, physiology has long been excluded from evolutionary research. The main reason for this exclusion is that physiology has a presential and futuristic outlook on life, while evolutionary theory is traditionally defined as the study of natural history. In this paper, I re-evaluate these classic science divisions and situate physiology within the history of the evolutionary sciences, as well as within debates on the Extended Evolutionary Synthesis and the need for a Third Way of Evolution. I then briefly point out how evolutionary physiology in particular contributes to research on function, causation, teleonomy, agency and cognition.
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Affiliation(s)
- Nathalie Gontier
- Applied Evolutionary Epistemology Lab & Centro de Filosofia das Ciências, Departamento de História e Filosofia das Ciências, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
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3
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Lauber C, Zhang X, Vaas J, Klingler F, Mutz P, Dubin A, Pietschmann T, Roth O, Neuman BW, Gorbalenya AE, Bartenschlager R, Seitz S. Deep mining of the Sequence Read Archive reveals major genetic innovations in coronaviruses and other nidoviruses of aquatic vertebrates. PLoS Pathog 2024; 20:e1012163. [PMID: 38648214 PMCID: PMC11065284 DOI: 10.1371/journal.ppat.1012163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 05/02/2024] [Accepted: 03/31/2024] [Indexed: 04/25/2024] Open
Abstract
Virus discovery by genomics and metagenomics empowered studies of viromes, facilitated characterization of pathogen epidemiology, and redefined our understanding of the natural genetic diversity of viruses with profound functional and structural implications. Here we employed a data-driven virus discovery approach that directly queries unprocessed sequencing data in a highly parallelized way and involves a targeted viral genome assembly strategy in a wide range of sequence similarity. By screening more than 269,000 datasets of numerous authors from the Sequence Read Archive and using two metrics that quantitatively assess assembly quality, we discovered 40 nidoviruses from six virus families whose members infect vertebrate hosts. They form 13 and 32 putative viral subfamilies and genera, respectively, and include 11 coronaviruses with bisegmented genomes from fishes and amphibians, a giant 36.1 kilobase coronavirus genome with a duplicated spike glycoprotein (S) gene, 11 tobaniviruses and 17 additional corona-, arteri-, cremega-, nanhypo- and nangoshaviruses. Genome segmentation emerged in a single evolutionary event in the monophyletic lineage encompassing the subfamily Pitovirinae. We recovered the bisegmented genome sequences of two coronaviruses from RNA samples of 69 infected fishes and validated the presence of poly(A) tails at both segments using 3'RACE PCR and subsequent Sanger sequencing. We report a genetic linkage between accessory and structural proteins whose phylogenetic relationships and evolutionary distances are incongruent with the phylogeny of replicase proteins. We rationalize these observations in a model of inter-family S recombination involving at least five ancestral corona- and tobaniviruses of aquatic hosts. In support of this model, we describe an individual fish co-infected with members from the families Coronaviridae and Tobaniviridae. Our results expand the scale of the known extraordinary evolutionary plasticity in nidoviral genome architecture and call for revisiting fundamentals of genome expression, virus particle biology, host range and ecology of vertebrate nidoviruses.
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Affiliation(s)
- Chris Lauber
- Institute for Experimental Virology, TWINCORE Centre for Experimental and Clinical Infection Research, a joint venture between the Hannover Medical School (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Germany
- Cluster of Excellence 2155 RESIST, Hannover, Germany
| | - Xiaoyu Zhang
- Institute for Experimental Virology, TWINCORE Centre for Experimental and Clinical Infection Research, a joint venture between the Hannover Medical School (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Germany
| | - Josef Vaas
- Division of Virus-Associated Carcinogenesis (F170), German Cancer Research Center (DKFZ), Heidelberg, Germany
- Heidelberg University, Medical Faculty Heidelberg, Department of Infectious Diseases, Molecular Virology, Center for Integrative Infectious Disease Research, Heidelberg, Germany
| | - Franziska Klingler
- Division of Virus-Associated Carcinogenesis (F170), German Cancer Research Center (DKFZ), Heidelberg, Germany
- Heidelberg University, Medical Faculty Heidelberg, Department of Infectious Diseases, Molecular Virology, Center for Integrative Infectious Disease Research, Heidelberg, Germany
| | - Pascal Mutz
- Division of Virus-Associated Carcinogenesis (F170), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Arseny Dubin
- Marine Evolutionary Biology, Zoological Institute, Kiel University, Kiel, Germany
| | - Thomas Pietschmann
- Institute for Experimental Virology, TWINCORE Centre for Experimental and Clinical Infection Research, a joint venture between the Hannover Medical School (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover, Germany
- Cluster of Excellence 2155 RESIST, Hannover, Germany
| | - Olivia Roth
- Marine Evolutionary Biology, Zoological Institute, Kiel University, Kiel, Germany
| | - Benjamin W. Neuman
- Department of Biology and Texas A&M Global Health Research Complex, Texas A&M University, College Station, Texas, United States
| | - Alexander E. Gorbalenya
- Leiden University Center of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
- Faculty of Bioengineering and Bioinformatics and Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Ralf Bartenschlager
- Division of Virus-Associated Carcinogenesis (F170), German Cancer Research Center (DKFZ), Heidelberg, Germany
- Heidelberg University, Medical Faculty Heidelberg, Department of Infectious Diseases, Molecular Virology, Center for Integrative Infectious Disease Research, Heidelberg, Germany
| | - Stefan Seitz
- Division of Virus-Associated Carcinogenesis (F170), German Cancer Research Center (DKFZ), Heidelberg, Germany
- Heidelberg University, Medical Faculty Heidelberg, Department of Infectious Diseases, Molecular Virology, Center for Integrative Infectious Disease Research, Heidelberg, Germany
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da Silva JPH, de Resende FMP, da Silva JCF, de Breuil S, Nome C, Bejerman N, Zerbini FM. Amesuviridae: a new family of plant-infecting viruses in the phylum Cressdnaviricota, realm Monodnaviria. Arch Virol 2023; 168:223. [PMID: 37561218 DOI: 10.1007/s00705-023-05852-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
The phylum Cressdnaviricota comprises viruses with single-stranded, circular DNA genomes that encode an HUH-type endonuclease (known as Rep). The phylum includes two classes, eight orders, and 11 families. Here, we report the creation of a twelfth family in the order Mulpavirales, class Arfiviricetes of the phylum Cressdnaviricota. The family Amesuviridae comprises viruses that infect plants and is divided into two genera: Temfrudevirus, including the species Temfrudevirus temperatum (with temperate fruit decay-associated virus as a member), and Yermavirus, including the species Yermavirus ilicis (with yerba mate-associated circular DNA virus as a member). Both viruses encode Rep proteins with HUH endonuclease and SH3 superfamily helicase domains. Phylogenetic analysis indicates that the replicative module of amesuviruses constitutes a well-supported monophyletic clade related to Rep proteins from viruses in the order Mulpavirales. Furthermore, both viruses encode a single capsid protein (CP) related to geminivirus CPs. Phylogenetic incongruence between the replicative and structural modules of amesuviruses suggests a chimeric origin resulting from remote recombination events between ancestral mulpavirales and geminivirids. The creation of the family Amesuviridae has been ratified by the International Committee on Taxonomy of Viruses (ICTV).
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Affiliation(s)
| | | | | | - Soledad de Breuil
- Instituto de Patología Vegetal, Centro de Investigaciones, Instituto Nacional de Tecnología Agropecuaria (IPAVE-CIAP-INTA), Camino 60 Cuadras Km 5.5, X5020ICA, Agropecuarias, Córdoba, Argentina
| | - Claudia Nome
- Instituto de Patología Vegetal, Centro de Investigaciones, Instituto Nacional de Tecnología Agropecuaria (IPAVE-CIAP-INTA), Camino 60 Cuadras Km 5.5, X5020ICA, Agropecuarias, Córdoba, Argentina
| | - Nicolas Bejerman
- Instituto de Patología Vegetal, Centro de Investigaciones, Instituto Nacional de Tecnología Agropecuaria (IPAVE-CIAP-INTA), Camino 60 Cuadras Km 5.5, X5020ICA, Agropecuarias, Córdoba, Argentina
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5
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Butkovic A, Kraberger S, Smeele Z, Martin DP, Schmidlin K, Fontenele RS, Shero MR, Beltran RS, Kirkham AL, Aleamotu’a M, Burns JM, Koonin EV, Varsani A, Krupovic M. Evolution of anelloviruses from a circovirus-like ancestor through gradual augmentation of the jelly-roll capsid protein. Virus Evol 2023; 9:vead035. [PMID: 37325085 PMCID: PMC10266747 DOI: 10.1093/ve/vead035] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 05/15/2023] [Accepted: 05/22/2023] [Indexed: 06/17/2023] Open
Abstract
Anelloviruses are highly prevalent in diverse mammals, including humans, but so far have not been linked to any disease and are considered to be part of the 'healthy virome'. These viruses have small circular single-stranded DNA (ssDNA) genomes and encode several proteins with no detectable sequence similarity to proteins of other known viruses. Thus, anelloviruses are the only family of eukaryotic ssDNA viruses currently not included in the realm Monodnaviria. To gain insights into the provenance of these enigmatic viruses, we sequenced more than 250 complete genomes of anelloviruses from nasal and vaginal swab samples of Weddell seal (Leptonychotes weddellii) from Antarctica and a fecal sample of grizzly bear (Ursus arctos horribilis) from the USA and performed a comprehensive family-wide analysis of the signature anellovirus protein ORF1. Using state-of-the-art remote sequence similarity detection approaches and structural modeling with AlphaFold2, we show that ORF1 orthologs from all Anelloviridae genera adopt a jelly-roll fold typical of viral capsid proteins (CPs), establishing an evolutionary link to other eukaryotic ssDNA viruses, specifically, circoviruses. However, unlike CPs of other ssDNA viruses, ORF1 encoded by anelloviruses from different genera display remarkable variation in size, due to insertions into the jelly-roll domain. In particular, the insertion between β-strands H and I forms a projection domain predicted to face away from the capsid surface and function at the interface of virus-host interactions. Consistent with this prediction and supported by recent experimental evidence, the outermost region of the projection domain is a mutational hotspot, where rapid evolution was likely precipitated by the host immune system. Collectively, our findings further expand the known diversity of anelloviruses and explain how anellovirus ORF1 proteins likely diverged from canonical jelly-roll CPs through gradual augmentation of the projection domain. We suggest assigning Anelloviridae to a new phylum, 'Commensaviricota', and including it into the kingdom Shotokuvirae (realm Monodnaviria), alongside Cressdnaviricota and Cossaviricota.
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Affiliation(s)
- Anamarija Butkovic
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, Archaeal Virology Unit, 25 rue du Dr Roux, Paris 75015, France
| | - Simona Kraberger
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, 1001 S. McAllister Ave, Tempe, AZ 85287, USA
| | - Zoe Smeele
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, 1001 S. McAllister Ave, Tempe, AZ 85287, USA
| | - Darren P Martin
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, 1001 S. McAllister Ave, Tempe, AZ 85287, USA
| | - Kara Schmidlin
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, 1001 S. McAllister Ave, Tempe, AZ 85287, USA
| | - Rafaela S Fontenele
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, 1001 S. McAllister Ave, Tempe, AZ 85287, USA
| | - Michelle R Shero
- Biology Department, Woods Hole Oceanographic Institution, 266 Woods Hole Rd, Woods Hole, MA 02543, USA
| | - Roxanne S Beltran
- Department of Ecology and Evolutionary Biology, University of California Santa Cruz, 130 McAllister Way, Santa Cruz, CA 95060, USA
| | - Amy L Kirkham
- U.S. Fish and Wildlife Service, Marine Mammals Management, 1011 E, Tudor Road, Anchorage, AK 99503, USA
| | - Maketalena Aleamotu’a
- School of Environmental and Life Sciences, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - Jennifer M Burns
- Department of Biological Sciences, Texas Tech University, 2500 Broadway, Lubbock, TX 79409, USA
| | - Eugene V Koonin
- National Center for Biotechnology Information, National Library of Medicine, 8600 Rockville Pike, Bethesda, MD 20894, USA
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, 1001 S. McAllister Ave, Tempe, AZ 85287, USA
- Computational Biology Division, Department of Integrative Biomedical Sciences, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Observatory, 1 Anzio Road, Cape Town 7925, South Africa
| | - Mart Krupovic
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, Archaeal Virology Unit, 25 rue du Dr Roux, Paris 75015, France
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6
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Inoue Y, Takeda H. Teratorn and its relatives - a cross-point of distinct mobile elements, transposons and viruses. Front Vet Sci 2023; 10:1158023. [PMID: 37187934 PMCID: PMC10175614 DOI: 10.3389/fvets.2023.1158023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 04/10/2023] [Indexed: 05/17/2023] Open
Abstract
Mobile genetic elements (e.g., transposable elements and plasmids) and viruses display significant diversity with various life cycles, but how this diversity emerges remains obscure. We previously reported a novel and giant (180 kb long) mobile element, Teratorn, originally identified in the genome of medaka, Oryzias latipes. Teratorn is a composite DNA transposon created by a fusion of a piggyBac-like DNA transposon (piggyBac) and a novel herpesvirus of the Alloherpesviridae family. Genomic survey revealed that Teratorn-like herpesviruses are widely distributed among teleost genomes, the majority of which are also fused with piggyBac, suggesting that fusion with piggyBac is a trigger for the life-cycle shift of authentic herpesviruses to an intragenomic parasite. Thus, Teratorn-like herpesvirus provides a clear example of how novel mobile elements emerge, that is to say, the creation of diversity. In this review, we discuss the unique sequence and life-cycle characteristics of Teratorn, followed by the evolutionary process of piggyBac-herpesvirus fusion based on the distribution of Teratorn-like herpesviruses (relatives) among teleosts. Finally, we provide other examples of evolutionary associations between different classes of elements and propose that recombination could be a driving force generating novel mobile elements.
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Affiliation(s)
- Yusuke Inoue
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Takeda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
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7
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Simmonds P, Adriaenssens EM, Zerbini FM, Abrescia NGA, Aiewsakun P, Alfenas-Zerbini P, Bao Y, Barylski J, Drosten C, Duffy S, Duprex WP, Dutilh BE, Elena SF, García ML, Junglen S, Katzourakis A, Koonin EV, Krupovic M, Kuhn JH, Lambert AJ, Lefkowitz EJ, Łobocka M, Lood C, Mahony J, Meier-Kolthoff JP, Mushegian AR, Oksanen HM, Poranen MM, Reyes-Muñoz A, Robertson DL, Roux S, Rubino L, Sabanadzovic S, Siddell S, Skern T, Smith DB, Sullivan MB, Suzuki N, Turner D, Van Doorslaer K, Vandamme AM, Varsani A, Vasilakis N. Four principles to establish a universal virus taxonomy. PLoS Biol 2023; 21:e3001922. [PMID: 36780432 PMCID: PMC9925010 DOI: 10.1371/journal.pbio.3001922] [Citation(s) in RCA: 34] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023] Open
Abstract
A universal taxonomy of viruses is essential for a comprehensive view of the virus world and for communicating the complicated evolutionary relationships among viruses. However, there are major differences in the conceptualisation and approaches to virus classification and nomenclature among virologists, clinicians, agronomists, and other interested parties. Here, we provide recommendations to guide the construction of a coherent and comprehensive virus taxonomy, based on expert scientific consensus. Firstly, assignments of viruses should be congruent with the best attainable reconstruction of their evolutionary histories, i.e., taxa should be monophyletic. This fundamental principle for classification of viruses is currently included in the International Committee on Taxonomy of Viruses (ICTV) code only for the rank of species. Secondly, phenotypic and ecological properties of viruses may inform, but not override, evolutionary relatedness in the placement of ranks. Thirdly, alternative classifications that consider phenotypic attributes, such as being vector-borne (e.g., "arboviruses"), infecting a certain type of host (e.g., "mycoviruses," "bacteriophages") or displaying specific pathogenicity (e.g., "human immunodeficiency viruses"), may serve important clinical and regulatory purposes but often create polyphyletic categories that do not reflect evolutionary relationships. Nevertheless, such classifications ought to be maintained if they serve the needs of specific communities or play a practical clinical or regulatory role. However, they should not be considered or called taxonomies. Finally, while an evolution-based framework enables viruses discovered by metagenomics to be incorporated into the ICTV taxonomy, there are essential requirements for quality control of the sequence data used for these assignments. Combined, these four principles will enable future development and expansion of virus taxonomy as the true evolutionary diversity of viruses becomes apparent.
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Affiliation(s)
- Peter Simmonds
- Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | | | - F. Murilo Zerbini
- Departamento de Fitopatologia/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Nicola G. A. Abrescia
- Structure and Cell Biology of Viruses Lab, Center for Cooperative Research in Biosciences—BRTA, Derio, Spain
- Basque Foundation for Science, IKERBASQUE, Bilbao, Spain
| | - Pakorn Aiewsakun
- Department of Microbiology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | | | - Yiming Bao
- National Genomics Data Center, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jakub Barylski
- Department of Molecular Virology, Adam Mickiewicz University, Poznan, Poland
| | - Christian Drosten
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Free University Berlin, Humboldt University, Berlin, Germany
- Berlin Institute of Health, Berlin, Germany
| | - Siobain Duffy
- Department of Ecology, Evolution and Natural Resources, School of Environmental and Biological Sciences, Rutgers The State University of New Jersey, New Brunswick, New Jersey, United States of America
| | - W. Paul Duprex
- The Center for Vaccine Research, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Bas E. Dutilh
- Institute of Biodiversity, Faculty of Biological Sciences, Cluster of Excellence Balance of the Microverse, Friedrich-Schiller-University, Jena, Germany
- Theoretical Biology and Bioinformatics, Science for Life, Utrecht University, Utrecht, the Netherlands
| | - Santiago F. Elena
- Instituto de Biología Integrativa de Sistemas (I2SysBio), CSIC-Universitat de València, Valencia, Spain
- Santa Fe Institute, Santa Fe, New Mexico, United States of America
| | - Maria Laura García
- Instituto de Biotecnología y Biología Molecular, CCT-La Plata, CONICET, UNLP, La Plata, Argentina
| | - Sandra Junglen
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Free University Berlin, Humboldt University, Berlin, Germany
- Berlin Institute of Health, Berlin, Germany
| | - Aris Katzourakis
- Department of Biology, University of Oxford, Oxford, United Kingdom
| | - Eugene V. Koonin
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Mart Krupovic
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, Archaeal Virology Unit, Paris, France
| | - Jens H. Kuhn
- Integrated Research Facility at Fort Detrick (IRF-Frederick), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Fort Detrick, Frederick, Maryland, United States of America
| | - Amy J. Lambert
- Division of Vector-Borne Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, United States of America
| | - Elliot J. Lefkowitz
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Małgorzata Łobocka
- Institute of Biochemistry and Biophysics of the Polish Academy of Sciences, Warsaw, Poland
| | - Cédric Lood
- Department of Biosystems, KU Leuven, Leuven, Belgium
| | - Jennifer Mahony
- School of Microbiology and APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Jan P. Meier-Kolthoff
- Department of Bioinformatics and Databases, Leibniz Institute DSMZ—German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany
| | - Arcady R. Mushegian
- Division of Molecular and Cellular Biosciences, National Science Foundation, Alexandria, Virginia, United States of America
| | - Hanna M. Oksanen
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Minna M. Poranen
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Alejandro Reyes-Muñoz
- Max Planck Tandem Group in Computational Biology, Departamento de Ciencias Biológicas, Universidad de los Andes, Bogotá, Colombia
| | - David L. Robertson
- MRC-University of Glasgow Centre for Virus Research, Glasgow, United Kingdom
| | - Simon Roux
- Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Luisa Rubino
- Istituto per la Protezione Sostenibile delle Piante, CNR, UOS Bari, Bari, Italy
| | - Sead Sabanadzovic
- Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, Mississippi State, Mississippi, United States of America
| | - Stuart Siddell
- School of Cellular and Molecular Medicine, Faculty of Life Sciences, University of Bristol, Bristol, United Kingdom
| | - Tim Skern
- Medical University of Vienna, Max Perutz Labs, Vienna Biocenter, Vienna, Austria
| | - Donald B. Smith
- Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Matthew B. Sullivan
- Departments of Microbiology and Civil, Environmental, and Geodetic Engineering, Ohio State University, Columbus, Ohio, United States of America
| | - Nobuhiro Suzuki
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Okayama, Japan
| | - Dann Turner
- School of Applied Sciences, College of Health, Science and Society, University of the West of England, Bristol, United Kingdom
| | - Koenraad Van Doorslaer
- School of Animal and Comparative Biomedical Sciences, Department of Immunobiology, BIO5 Institute, and University of Arizona Cancer Center, Tucson, Arizona, United States of America
| | - Anne-Mieke Vandamme
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Leuven, Belgium
- Center for Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, School of Life Sciences, Center for Evolution and Medicine, Arizona State University, Tempe, Arizona, United States of America
| | - Nikos Vasilakis
- Department of Pathology, Center of Vector-Borne and Zoonotic Diseases, Institute for Human Infection and Immunity and World Reference Center for Emerging Viruses and Arboviruses, The University of Texas Medical Branch, Galveston, Texas, United States of America
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8
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CRUISE, a Tool for the Detection of Iterons in Circular Rep-Encoding Single-Stranded DNA Viruses. Microbiol Resour Announc 2023; 12:e0112322. [PMID: 36453926 PMCID: PMC9872696 DOI: 10.1128/mra.01123-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Iterons are short, repeated DNA sequences that are important for the replication of circular single-stranded DNA viruses. No tools that can reliably predict iterons are currently available. The CRUcivirus Iteron SEarch (CRUISE) tool is a computational tool that identifies iteron candidates near stem-loop structures in viral genomes.
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Genetic Diversity and Characterization of Circular Replication (Rep)-Encoding Single-Stranded (CRESS) DNA Viruses. Microbiol Spectr 2022; 10:e0105722. [PMID: 36346238 PMCID: PMC9769708 DOI: 10.1128/spectrum.01057-22] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The CRESS-DNA viruses are the ubiquitous virus detected in almost all eukaryotic life trees and play an essential role in the maintaining ecosystem of the globe. Still, their genetic diversity is not fully understood. Here, we bring to light the genetic diversity of replication (Rep) and capsid (Cap) proteins of CRESS-DNA viruses. We divided the Rep protein of the CRESS-DNA virus into 10 clusters using CLANS and phylogenetic analyses. Also, most of the Rep protein in Rep cluster 1 (R1) and R2 (Circoviridae, Smacoviridae, Nanoviridae, and CRESSV1-5) contain the Viral_Rep superfamily and P-loop_NTPase superfamily domains, while the Rep protein of viruses in other clusters has no such characterized functional domain. The Circoviridae, Nanoviridae, and CRESSV1-3 viruses contain two domains, such as Viral_Rep and P-loop_NTPase; the CRESSV4 and CRESSV5 viruses have only the Viral_Rep domain; most of the sequences in the pCRESS-related group have only P-loop_NTPase; and Smacoviridae do not have these two domains. Further, we divided the Cap protein of the CRESS-DNA virus into 20 clusters using CLANS and phylogenetic analyses. The Rep and Cap proteins of Circoviridae and Smacoviridae are grouped into a specific cluster. Cap protein of CRESS-DNA viruses grouped with one cluster and Rep protein with another cluster. Further, our study reveals that selection pressure plays a significant role in the evolution of CRESS-DNA viruses' Rep and Cap genes rather than mutational pressure. We hope this study will help determine the genetic diversity of CRESS-DNA viruses as more sequences are discovered in the future. IMPORTANCE The genetic diversity of CRESS-DNA viruses is not fully understood. CRESS-DNA viruses are classified as CRESSV1 to CRESSV6 using only Rep protein. This study revealed that the Rep protein of the CRESS-DNA viruses is classified as CRESSV1 to CRESSV6 groups and the new Smacoviridae-related, CRESSV2-related, pCRESS-related, Circoviridae-related, and 1 to 4 outgroups, according to the Viral_Rep and P-loop_NTPase domain organization, CLANS, and phylogenetic analysis. Furthermore, for the first time in this study, the Cap protein of CRESS-DNA viruses was classified into 20 distinct clusters by CLANS and phylogenetic analysis. Through this classification, the genetic diversity of CRESS-DNA viruses clarifies the possibility of recombinations in Cap and Rep proteins. Finally, it has been shown that selection pressure plays a significant role in the evolution and genetic diversity of Cap and Rep proteins. This study explains the genetic diversity of CRESS-DNA viruses and hopes that it will help classify future detected viruses.
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10
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Krupovic M, Varsani A. Naryaviridae, Nenyaviridae, and Vilyaviridae: three new families of single-stranded DNA viruses in the phylum Cressdnaviricota. Arch Virol 2022; 167:2907-2921. [PMID: 36098801 DOI: 10.1007/s00705-022-05557-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 07/19/2022] [Indexed: 12/14/2022]
Abstract
The phylum Cressdnaviricota includes viruses with circular single-stranded DNA (ssDNA) genomes and icosahedral capsids. These viruses display global environmental distribution and infect diverse eukaryotic hosts, including animals, plants, and fungi. Here, we report on the formal creation of two new orders, Rivendellvirales and Rohanvirales, and three new families, Naryaviridae, Nenyaviridae, and Vilyaviridae, of ssDNA viruses associated with protozoan parasites belonging to the genera Entamoeba and Giardia. We describe a sequence-based taxonomic framework, which was used to classify 60 ssDNA viruses into 12 genera (with 18 species) within the family Vilyaviridae; four genera (with five species) within the family Naryaviridae; and five genera (with six species) within the family Nenyaviridae. We also highlight the challenges associated with the classification of chimeric virus genomes, such as those in the families Naryaviridae and Nenyaviridae, where the replication initiation and capsid protein genes have undergone several independent non-orthologous replacements. The described taxonomic changes have been ratified by the International Committee on Taxonomy of Viruses (ICTV) and expand the phylum Cressdnaviricota to eight orders and 11 families.
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Affiliation(s)
- Mart Krupovic
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, Archaeal Virology Unit, F-75015, Paris, France.
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, Tempe, Arizona, USA. .,Structural Biology Research Unit, Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, South Africa.
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11
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Colson P, Fournier P, Delerce J, Million M, Bedotto M, Houhamdi L, Yahi N, Bayette J, Levasseur A, Fantini J, Raoult D, La Scola B. Culture and identification of a "Deltamicron" SARS-CoV-2 in a three cases cluster in southern France. J Med Virol 2022; 94:3739-3749. [PMID: 35467028 PMCID: PMC9088576 DOI: 10.1002/jmv.27789] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 11/25/2022]
Abstract
Multiple SARS-CoV-2 variants have successively, or concomitantly spread worldwide since the summer of 2020. A few co-infections with different variants were reported and genetic recombinations, common among coronaviruses, were reported or suspected based on co-detection of signature mutations of different variants in a given genome. Here we report three infections in southern France with a Delta 21J_AY.4-Omicron 21K/BA.1 "Deltamicron" recombinant. The hybrid genome harbors signature mutations of the two lineages, supported by a mean sequencing depth of 1163-1421 reads and a mean nucleotide diversity of 0.1%-0.6%. It is composed of the near full-length spike gene (from codons 156-179) of an Omicron 21K/BA.1 variant in a Delta 21J/AY.4 lineage backbone. Importantly, we cultured an isolate of this recombinant and sequenced its genome. It was observed by scanning electron microscopy. As it is misidentified with current variant screening quantitative polymerase chain reaction (qPCR), we designed and implemented for routine diagnosis a specific duplex qPCR. Finally, structural analysis of the recombinant spike suggested its hybrid content could optimize viral binding to the host cell membrane. These findings prompt further studies of the virological, epidemiological, and clinical features of this recombinant.
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Affiliation(s)
- Philippe Colson
- IHU Méditerranée InfectionMarseilleFrance
- Aix‐Marseille Univ., Institut de Recherche pour le Développement (IRD)Microbes Evolution Phylogeny and Infections (MEPHI)MarseilleFrance
- Assistance Publique‐Hôpitaux de Marseille (AP‐HM)MarseilleFrance
| | - Pierre‐Edouard Fournier
- IHU Méditerranée InfectionMarseilleFrance
- Aix‐Marseille Univ., Institut de Recherche pour le Développement (IRD)Microbes Evolution Phylogeny and Infections (MEPHI)MarseilleFrance
- Aix‐Marseille Univ., Institut de Recherche pour le Développement (IRD)Vecteurs—Infections Tropicales et Méditerranéennes (VITROME)MarseilleFrance
| | | | - Matthieu Million
- IHU Méditerranée InfectionMarseilleFrance
- Aix‐Marseille Univ., Institut de Recherche pour le Développement (IRD)Microbes Evolution Phylogeny and Infections (MEPHI)MarseilleFrance
- Assistance Publique‐Hôpitaux de Marseille (AP‐HM)MarseilleFrance
| | | | | | - Nouara Yahi
- Aix‐Marseille Université, INSERM UMR S 1072MarseilleFrance
| | | | - Anthony Levasseur
- IHU Méditerranée InfectionMarseilleFrance
- Aix‐Marseille Univ., Institut de Recherche pour le Développement (IRD)Microbes Evolution Phylogeny and Infections (MEPHI)MarseilleFrance
| | | | - Didier Raoult
- IHU Méditerranée InfectionMarseilleFrance
- Aix‐Marseille Univ., Institut de Recherche pour le Développement (IRD)Microbes Evolution Phylogeny and Infections (MEPHI)MarseilleFrance
| | - Bernard La Scola
- IHU Méditerranée InfectionMarseilleFrance
- Aix‐Marseille Univ., Institut de Recherche pour le Développement (IRD)Microbes Evolution Phylogeny and Infections (MEPHI)MarseilleFrance
- Assistance Publique‐Hôpitaux de Marseille (AP‐HM)MarseilleFrance
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12
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Abstract
Marine algae viruses are important for controlling microorganism communities in the marine ecosystem and played fundamental roles during the early events of viral evolution. Here, we have focused on one major group of marine algae viruses, the single-stranded DNA (ssDNA) viruses from the Bacilladnaviridae family. We present the capsid structure of the bacilladnavirus Chaetoceros tenuissimus DNA virus type II (CtenDNAV-II), determined at 2.4-Å resolution. A structure-based phylogenetic analysis supported the previous theory that bacilladnaviruses have acquired their capsid protein via horizontal gene transfer from a ssRNA virus. The capsid protein contains the widespread virus jelly-roll fold but has additional unique features; a third β-sheet and a long C-terminal tail. Furthermore, a low-resolution reconstruction of the CtenDNAV-II genome revealed a partially spooled structure, an arrangement previously only described for dsRNA and dsDNA viruses. Together, these results exemplify the importance of genetic recombination for the emergence and evolution of ssDNA viruses and provide important insights into the underlying mechanisms that dictate genome organization. IMPORTANCE Single-stranded DNA (ssDNA) viruses are an extremely widespread group of viruses that infect diverse hosts from all three domains of life, consequently having great economic, medical, and ecological importance. In particular, bacilladnaviruses are highly abundant in marine sediments and greatly influence the dynamic appearance and disappearance of certain algae species. Despite the importance of ssDNA viruses and the last couple of years' advancements in cryo-electron microscopy, structural information on the genomes of ssDNA viruses remains limited. This paper describes two important achievements: (i) the first atomic structure of a bacilladnavirus capsid, which revealed that the capsid protein gene presumably was acquired from a ssRNA virus in early evolutionary events; and (ii) the structural organization of a ssDNA genome, which retains a spooled arrangement that previously only been observed for double-stranded viruses.
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Chase EE, Monteil-Bouchard S, Gobet A, Andrianjakarivony FH, Desnues C, Blanc G. A High Rate Algal Pond Hosting a Dynamic Community of RNA Viruses. Viruses 2021; 13:2163. [PMID: 34834969 PMCID: PMC8619904 DOI: 10.3390/v13112163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/19/2021] [Accepted: 10/22/2021] [Indexed: 12/16/2022] Open
Abstract
Despite a surge of RNA virome sequencing in recent years, there are still many RNA viruses to uncover-as indicated by the relevance of viral dark matter to RNA virome studies (i.e., putative viruses that do not match to taxonomically identified viruses). This study explores a unique site, a high-rate algal pond (HRAP), for culturing industrially microalgae, to elucidate new RNA viruses. The importance of viral-host interactions in aquatic systems are well documented, and the ever-expanding microalgae industry is no exception. As the industry becomes a more important source of sustainable plastic manufacturing, a producer of cosmetic pigments and alternative protein sources, and a means of CO2 remediation in the face of climate change, studying microalgal viruses becomes a vital practice for proactive management of microalgae cultures at the industrial level. This study provides evidence of RNA microalgal viruses persisting in a CO2 remediation pilot project HRAP and uncovers the diversity of the RNA virosphere contained within it. Evidence shows that family Marnaviridae is cultured in the basin, alongside other potential microalgal infecting viruses (e.g., family Narnaviridae, family Totitiviridae, and family Yueviridae). Finally, we demonstrate that the RNA viral diversity of the HRAP is temporally dynamic across two successive culturing seasons.
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Affiliation(s)
- Emily E. Chase
- Microbiologie Environnementale Biotechnologie, Institut Méditerranéen d’Océanologie, 163 Avenue de Luminy, 13009 Marseille, France; (S.M.-B.); (F.H.A.)
- Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13005 Marseille, France
| | - Sonia Monteil-Bouchard
- Microbiologie Environnementale Biotechnologie, Institut Méditerranéen d’Océanologie, 163 Avenue de Luminy, 13009 Marseille, France; (S.M.-B.); (F.H.A.)
| | - Angélique Gobet
- MARBEC University Montpellier, CNRS, Ifremer, IRD, 34203 Sète, France;
| | - Felana H. Andrianjakarivony
- Microbiologie Environnementale Biotechnologie, Institut Méditerranéen d’Océanologie, 163 Avenue de Luminy, 13009 Marseille, France; (S.M.-B.); (F.H.A.)
- Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13005 Marseille, France
| | - Christelle Desnues
- Microbiologie Environnementale Biotechnologie, Institut Méditerranéen d’Océanologie, 163 Avenue de Luminy, 13009 Marseille, France; (S.M.-B.); (F.H.A.)
- Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13005 Marseille, France
| | - Guillaume Blanc
- Microbiologie Environnementale Biotechnologie, Institut Méditerranéen d’Océanologie, 163 Avenue de Luminy, 13009 Marseille, France; (S.M.-B.); (F.H.A.)
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14
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Ortega-Del Campo S, Grigoras I, Timchenko T, Gronenborn B, Grande-Pérez A. Twenty years of evolution and diversification of digitaria streak virus in Digitaria setigera. Virus Evol 2021; 7:veab083. [PMID: 34659796 PMCID: PMC8516820 DOI: 10.1093/ve/veab083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 09/09/2021] [Accepted: 09/20/2021] [Indexed: 11/21/2022] Open
Abstract
Within the family Geminiviridae, the emergence of new species results from their high mutation and recombination rates. In this study, we report the variability and evolution of digitaria streak virus (DSV), a mastrevirus isolated in 1986 from the grass Digitaria setigera in an island of the Vanuatu archipelago. Viral DNA of DSV samples was amplified from D. setigera specimens, derived from the naturally infected original plant, which were propagated in different laboratories in France and Italy for more than 20 years. From the consensus sequences, the nucleotide substitution rate was estimated for the period between a sample and the original sequence published in 1987, as well as for the period between samples. In addition, the intra-host genetic complexity and diversity of 8 DSV populations with a total of 165 sequenced haplotypes was characterized. The evolutionary rate of DSV was estimated to be between 1.13 × 10−4 and 9.87 × 10−4 substitutions/site/year, within the ranges observed in other single-stranded DNA viruses and RNA viruses. Bioinformatic analyses revealed high variability and heterogeneity in DSV populations, which confirmed that mutant spectra are continuously generated and are organized as quasispecies. The analysis of polymorphisms revealed nucleotide substitution biases in viral genomes towards deamination and oxidation of single-stranded DNA. The differences in variability in each of the genomic regions reflected a dynamic and modular evolution in the mutant spectra that was not reflected in the consensus sequences. Strikingly, the most variable region of the DSV genome, encoding the movement protein, showed rapid fixation of the mutations in the consensus sequence and a concomitant dN/dS ratio of 6.130, which suggests strong positive selection in this region. Phylogenetic analyses revealed a possible divergence in three genetic lineages from the original Vanuatu DSV isolate.
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Affiliation(s)
| | - Ioana Grigoras
- CNRS, Institut des Sciences du Végétal, Gif-sur-Yvette 91198, France
| | - Tatiana Timchenko
- CNRS, Institut des Sciences du Végétal, Gif-sur-Yvette 91198, France
| | - Bruno Gronenborn
- CNRS, Institut des Sciences du Végétal, Gif-sur-Yvette 91198, France
| | - Ana Grande-Pérez
- Instituto de Hortofruticultura Subtropical y Mediterránea 'La Mayora' (IHSM-UMA-CSIC), Área de Genética, Facultad de Ciencias, Campus de Teatinos, Málaga 29071, Spain
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15
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Hoque MN, Akter S, Mishu ID, Islam MR, Rahman MS, Akhter M, Islam I, Hasan MM, Rahaman MM, Sultana M, Islam T, Hossain MA. Microbial co-infections in COVID-19: Associated microbiota and underlying mechanisms of pathogenesis. Microb Pathog 2021; 156:104941. [PMID: 33962007 PMCID: PMC8095020 DOI: 10.1016/j.micpath.2021.104941] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 04/08/2021] [Accepted: 04/08/2021] [Indexed: 01/08/2023]
Abstract
The novel coronavirus infectious disease-2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has traumatized the whole world with the ongoing devastating pandemic. A plethora of microbial domains including viruses (other than SARS-CoV-2), bacteria, archaea and fungi have evolved together, and interact in complex molecular pathogenesis along with SARS-CoV-2. However, the involvement of other microbial co-pathogens and underlying molecular mechanisms leading to extortionate ailment in critically ill COVID-19 patients has yet not been extensively reviewed. Although, the incidence of co-infections could be up to 94.2% in laboratory-confirmed COVID-19 cases, the fate of co-infections among SARS-CoV-2 infected hosts often depends on the balance between the host's protective immunity and immunopathology. Predominantly identified co-pathogens of SARS-CoV-2 are bacteria such as Streptococcus pneumoniae, Staphylococcus aureus, Klebsiella pneumoniae, Haemophilus influenzae, Mycoplasma pneumoniae, Acinetobacter baumannii, Legionella pneumophila and Clamydia pneumoniae followed by viruses including influenza, coronavirus, rhinovirus/enterovirus, parainfluenza, metapneumovirus, influenza B virus, and human immunodeficiency virus. The cross-talk between co-pathogens (especially lung microbiomes), SARS-CoV-2 and host is an important factor that ultimately increases the difficulty of diagnosis, treatment, and prognosis of COVID-19. Simultaneously, co-infecting microbiotas may use new strategies to escape host defense mechanisms by altering both innate and adaptive immune responses to further aggravate SARS-CoV-2 pathogenesis. Better understanding of co-infections in COVID-19 is critical for the effective patient management, treatment and containment of SARS-CoV-2. This review therefore necessitates the comprehensive investigation of commonly reported microbial co-pathogens amid COVID-19, their transmission pattern along with the possible mechanism of co-infections and outcomes. Thus, identifying the possible co-pathogens and their underlying molecular mechanisms during SARS-CoV-2 pathogenesis may shed light in developing diagnostics, appropriate curative and preventive interventions for suspected SARS-CoV-2 respiratory infections in the current pandemic.
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Affiliation(s)
- M Nazmul Hoque
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh; Department of Gynecology, Obstetrics and Reproductive Health, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, 1706, Bangladesh
| | - Salma Akter
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh; Department of Microbiology, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | | | - M Rafiul Islam
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - M Shaminur Rahman
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Masuda Akhter
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Israt Islam
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Mehedi Mahmudul Hasan
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh; Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Md Mizanur Rahaman
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Munawar Sultana
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Tofazzal Islam
- Institute of Biotechnology and Genetic Engineering (IBGE), BSMRAU, Gazipur, 1706, Bangladesh
| | - M Anwar Hossain
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh; Jashore University of Science and Technology, Jashore, 7408, Bangladesh.
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16
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Hufsky F, Beerenwinkel N, Meyer IM, Roux S, Cook GM, Kinsella CM, Lamkiewicz K, Marquet M, Nieuwenhuijse DF, Olendraite I, Paraskevopoulou S, Young F, Dijkman R, Ibrahim B, Kelly J, Le Mercier P, Marz M, Ramette A, Thiel V. The International Virus Bioinformatics Meeting 2020. Viruses 2020; 12:E1398. [PMID: 33291220 PMCID: PMC7762161 DOI: 10.3390/v12121398] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 12/16/2022] Open
Abstract
The International Virus Bioinformatics Meeting 2020 was originally planned to take place in Bern, Switzerland, in March 2020. However, the COVID-19 pandemic put a spoke in the wheel of almost all conferences to be held in 2020. After moving the conference to 8-9 October 2020, we got hit by the second wave and finally decided at short notice to go fully online. On the other hand, the pandemic has made us even more aware of the importance of accelerating research in viral bioinformatics. Advances in bioinformatics have led to improved approaches to investigate viral infections and outbreaks. The International Virus Bioinformatics Meeting 2020 has attracted approximately 120 experts in virology and bioinformatics from all over the world to join the two-day virtual meeting. Despite concerns being raised that virtual meetings lack possibilities for face-to-face discussion, the participants from this small community created a highly interactive scientific environment, engaging in lively and inspiring discussions and suggesting new research directions and questions. The meeting featured five invited and twelve contributed talks, on the four main topics: (1) proteome and RNAome of RNA viruses, (2) viral metagenomics and ecology, (3) virus evolution and classification and (4) viral infections and immunology. Further, the meeting featured 20 oral poster presentations, all of which focused on specific areas of virus bioinformatics. This report summarizes the main research findings and highlights presented at the meeting.
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Affiliation(s)
- Franziska Hufsky
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- RNA Bioinformatics and High-Throughput Analysis, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Niko Beerenwinkel
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Department of Biosystems Science and Engineering, ETH Zurich, 4058 Basel, Switzerland
- SIB Swiss Institute of Bioinformatics, 4058 Basel, Switzerland
| | - Irmtraud M. Meyer
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin Institute for Medical Systems Biology, 10115 Berlin, Germany
- Department of Biology, Chemistry and Pharmacy, Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195 Berlin, Germany
| | - Simon Roux
- Lawrence Berkeley National Laboratory, DOE Joint Genome Institute, Berkeley, CA 94720, USA;
| | - Georgia May Cook
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Department of Pathology, Division of Virology, University of Cambridge, Cambridge CB2 1TN, UK
| | - Cormac M. Kinsella
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Laboratory of Experimental Virology, Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Kevin Lamkiewicz
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- RNA Bioinformatics and High-Throughput Analysis, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Mike Marquet
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- CaSe Group, Institut für Infektionsmedizin und Krankenhaushygiene, Universitätsklinikum Jena, 07743 Jena, Germany
| | - David F. Nieuwenhuijse
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Viroscience Department, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - Ingrida Olendraite
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Department of Pathology, Division of Virology, University of Cambridge, Cambridge CB2 1TN, UK
| | - Sofia Paraskevopoulou
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Institute of Virology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany
| | - Francesca Young
- MRC-University of Glasgow Centre for Virus Research, Glasgow G61 1QH, UK;
| | - Ronald Dijkman
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Institute of Virology and Immunology, University of Bern, 3012 Bern, Switzerland
- Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland
- Institute for Infectious Diseases, University of Bern, 3012 Bern, Switzerland
| | - Bashar Ibrahim
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Centre for Applied Mathematics and Bioinformatics, Hawally 32093, Kuwait
- Department of Mathematics and Natural Sciences Gulf University for Science and Technology, Hawally 32093, Kuwait
| | - Jenna Kelly
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Institute of Virology and Immunology, University of Bern, 3012 Bern, Switzerland
| | - Philippe Le Mercier
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Swiss-Prot Group, SIB Swiss Institute of Bioinformatics, 1205 Geneva, Switzerland
| | - Manja Marz
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- RNA Bioinformatics and High-Throughput Analysis, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Alban Ramette
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Institute for Infectious Diseases, University of Bern, 3012 Bern, Switzerland
| | - Volker Thiel
- European Virus Bioinformatics Center, 07743 Jena, Germany; (N.B.); (I.M.M.); (G.M.C.); (C.M.K.); (K.L.); (M.M.); (D.F.N.); (I.O.); (S.P.); (R.D.); (B.I.); (J.K.); (P.L.M.); (M.M.); (A.R.); (V.T.)
- Institute of Virology and Immunology, University of Bern, 3012 Bern, Switzerland
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17
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Krupovic M, Yutin N, Koonin E. Evolution of a major virion protein of the giant pandoraviruses from an inactivated bacterial glycoside hydrolase. Virus Evol 2020; 6:veaa059. [PMID: 33686356 DOI: 10.1093/ve/veaa059] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The diverse viruses in the phylum Nucleocytoviricota (also known as NLCDVs, Nucleo-cytoplasmic Large DNA Viruses) typically possess large icosahedral virions. However, in several families of Nucleocytoviricota, the icosahedral capsid was replaced by irregular particle shapes, most notably, the amphora-like virions of pandoraviruses and pithoviruses, the largest known virus particles in the entire virosphere. Pandoraviruses appear to be the most highly derived viruses in this phylum because their evolution involved not only the change in the virion shape, but also, the actual loss of the gene encoding double-jelly roll major capsid protein (DJR MCP), the main building block of icosahedral capsids in this virus assemblage. Instead, pandoravirus virions are built of unrelated abundant proteins. Here we show that the second most abundant virion protein of pandoraviruses, major virion protein 2 (MVP2), evolved from an inactivated derivative of a bacterial glycoside hydrolase of the GH16 family. The ancestral form of MVP2 was apparently acquired early in the evolution of the Nucleocytoviricota, to become a minor virion protein. After a duplication in the common ancestor of pandoraviruses and molliviruses, one of the paralogs displaces DJR MCP in pandoraviruses, conceivably, opening the way for a major increase in the size of the virion and the genome. Exaptation of a carbohydrate-binding protein for the function of the MVP is a general trend in virus evolution and might underlie the transformation of the virion shape in other groups of the Nucleocytoviricota as well.
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Affiliation(s)
- Mart Krupovic
- Department of Microbiology, Archaeal Virology Unit, Institut Pasteur, Paris 75015, France
| | - Natalya Yutin
- National Library of Medicine, National Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894, USA
| | - Eugene Koonin
- National Library of Medicine, National Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894, USA
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18
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Identification and Distribution of Novel Cressdnaviruses and Circular molecules in Four Penguin Species in South Georgia and the Antarctic Peninsula. Viruses 2020; 12:v12091029. [PMID: 32947826 PMCID: PMC7551938 DOI: 10.3390/v12091029] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 12/26/2022] Open
Abstract
There is growing interest in uncovering the viral diversity present in wild animal species. The remote Antarctic region is home to a wealth of uncovered microbial diversity, some of which is associated with its megafauna, including penguin species, the dominant avian biota. Penguins interface with a number of other biota in their roles as marine mesopredators and several species overlap in their ranges and habitats. To characterize the circular single-stranded viruses related to those in the phylum Cressdnaviricota from these environmental sentinel species, cloacal swabs (n = 95) were obtained from King Penguins in South Georgia, and congeneric Adélie Penguins, Chinstrap Penguins, and Gentoo Penguins across the South Shetland Islands and Antarctic Peninsula. Using a combination of high-throughput sequencing, abutting primers-based PCR recovery of circular genomic elements, cloning, and Sanger sequencing, we detected 97 novel sequences comprising 40 ssDNA viral genomes and 57 viral-like circular molecules from 45 individual penguins. We present their detection patterns, with Chinstrap Penguins harboring the highest number of new sequences. The novel Antarctic viruses identified appear to be host-specific, while one circular molecule was shared between sympatric Chinstrap and Gentoo Penguins. We also report viral genotype sharing between three adult-chick pairs, one in each Pygoscelid species. Sequence similarity network approaches coupled with Maximum likelihood phylogenies of the clusters indicate the 40 novel viral genomes do not fall within any known viral families and likely fall within the recently established phylum Cressdnaviricota based on their replication-associated protein sequences. Similarly, 83 capsid protein sequences encoded by the viruses or viral-like circular molecules identified in this study do not cluster with any of those encoded by classified viral groups. Further research is warranted to expand knowledge of the Antarctic virome and would help elucidate the importance of viral-like molecules in vertebrate host evolution.
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19
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Abstract
Viruses are the most abundant biological entities on Earth. In addition to their impact on animal and plant health, viruses have important roles in ecosystem dynamics as well as in the evolution of the biosphere. Circular Rep-encoding single-stranded (CRESS) DNA viruses are ubiquitous in nature, many are agriculturally important, and they appear to have multiple origins from prokaryotic plasmids. A subset of CRESS-DNA viruses, the cruciviruses, have homologues of capsid proteins encoded by RNA viruses. The genetic structure of cruciviruses attests to the transfer of capsid genes between disparate groups of viruses. However, the evolutionary history of cruciviruses is still unclear. By collecting and analyzing cruciviral sequence data, we provide a deeper insight into the evolutionary intricacies of cruciviruses. Our results reveal an unexpected diversity of this virus group, with frequent recombination as an important determinant of variability. The discovery of cruciviruses revealed the most explicit example of a common protein homologue between DNA and RNA viruses to date. Cruciviruses are a novel group of circular Rep-encoding single-stranded DNA (ssDNA) (CRESS-DNA) viruses that encode capsid proteins that are most closely related to those encoded by RNA viruses in the family Tombusviridae. The apparent chimeric nature of the two core proteins encoded by crucivirus genomes suggests horizontal gene transfer of capsid genes between DNA and RNA viruses. Here, we identified and characterized 451 new crucivirus genomes and 10 capsid-encoding circular genetic elements through de novo assembly and mining of metagenomic data. These genomes are highly diverse, as demonstrated by sequence comparisons and phylogenetic analysis of subsets of the protein sequences they encode. Most of the variation is reflected in the replication-associated protein (Rep) sequences, and much of the sequence diversity appears to be due to recombination. Our results suggest that recombination tends to occur more frequently among groups of cruciviruses with relatively similar capsid proteins and that the exchange of Rep protein domains between cruciviruses is rarer than intergenic recombination. Additionally, we suggest members of the stramenopiles/alveolates/Rhizaria supergroup as possible crucivirus hosts. Altogether, we provide a comprehensive and descriptive characterization of cruciviruses.
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20
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Dolja VV, Krupovic M, Koonin EV. Deep Roots and Splendid Boughs of the Global Plant Virome. ANNUAL REVIEW OF PHYTOPATHOLOGY 2020; 58:23-53. [PMID: 32459570 DOI: 10.1146/annurev-phyto-030320-041346] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Land plants host a vast and diverse virome that is dominated by RNA viruses, with major additional contributions from reverse-transcribing and single-stranded (ss) DNA viruses. Here, we introduce the recently adopted comprehensive taxonomy of viruses based on phylogenomic analyses, as applied to the plant virome. We further trace the evolutionary ancestry of distinct plant virus lineages to primordial genetic mobile elements. We discuss the growing evidence of the pivotal role of horizontal virus transfer from invertebrates to plants during the terrestrialization of these organisms, which was enabled by the evolution of close ecological associations between these diverse organisms. It is our hope that the emerging big picture of the formation and global architecture of the plant virome will be of broad interest to plant biologists and virologists alike and will stimulate ever deeper inquiry into the fascinating field of virus-plant coevolution.
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Affiliation(s)
- Valerian V Dolja
- Department of Botany and Plant Pathology and Center for Genome Research and Biocomputing, Oregon State University, Corvallis, Oregon 97331-2902, USA;
| | - Mart Krupovic
- Archaeal Virology Unit, Department of Microbiology, Institut Pasteur, 75015 Paris, France
| | - Eugene V Koonin
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland 20894, USA
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21
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Krupovic M, Varsani A, Kazlauskas D, Breitbart M, Delwart E, Rosario K, Yutin N, Wolf YI, Harrach B, Zerbini FM, Dolja VV, Kuhn JH, Koonin EV. Cressdnaviricota: a Virus Phylum Unifying Seven Families of Rep-Encoding Viruses with Single-Stranded, Circular DNA Genomes. J Virol 2020; 94:e00582-20. [PMID: 32269128 PMCID: PMC7307096 DOI: 10.1128/jvi.00582-20] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
MESH Headings
- Animals
- DNA Viruses/classification
- DNA Viruses/genetics
- DNA, Circular/chemistry
- DNA, Circular/genetics
- DNA, Circular/metabolism
- DNA, Single-Stranded/chemistry
- DNA, Single-Stranded/genetics
- DNA, Single-Stranded/metabolism
- DNA, Viral/chemistry
- DNA, Viral/genetics
- DNA, Viral/metabolism
- Diatoms/virology
- Genome Size
- Genome, Viral
- Insecta/virology
- Phylogeny
- Plants/virology
- Terminology as Topic
- Viral Proteins/genetics
- Viral Proteins/metabolism
- Virus Replication
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Affiliation(s)
- Mart Krupovic
- Archaeal Virology Unit, Institut Pasteur, Paris, France
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, Tempe, Arizona, USA
- Structural Biology Research Unit, Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, South Africa
| | - Darius Kazlauskas
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Mya Breitbart
- University of South Florida, College of Marine Science, St. Petersburg, Florida, USA
| | - Eric Delwart
- Vitalant Research Institute, San Francisco, California, USA
- UCSF Department of Laboratory Medicine, University of California-San Francisco, San Francisco, California, USA
| | - Karyna Rosario
- University of South Florida, College of Marine Science, St. Petersburg, Florida, USA
| | - Natalya Yutin
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, USA
| | - Yuri I Wolf
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, USA
| | - Balázs Harrach
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Budapest, Hungary
| | - F Murilo Zerbini
- Departamento de Fitopatologia/Bioagro, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Valerian V Dolja
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon, USA
| | - Jens H Kuhn
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, Maryland, USA
| | - Eugene V Koonin
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, USA
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22
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Koonin EV, Dolja VV, Krupovic M, Varsani A, Wolf YI, Yutin N, Zerbini FM, Kuhn JH. Global Organization and Proposed Megataxonomy of the Virus World. Microbiol Mol Biol Rev 2020; 84:e00061-19. [PMID: 32132243 PMCID: PMC7062200 DOI: 10.1128/mmbr.00061-19] [Citation(s) in RCA: 324] [Impact Index Per Article: 81.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Viruses and mobile genetic elements are molecular parasites or symbionts that coevolve with nearly all forms of cellular life. The route of virus replication and protein expression is determined by the viral genome type. Comparison of these routes led to the classification of viruses into seven "Baltimore classes" (BCs) that define the major features of virus reproduction. However, recent phylogenomic studies identified multiple evolutionary connections among viruses within each of the BCs as well as between different classes. Due to the modular organization of virus genomes, these relationships defy simple representation as lines of descent but rather form complex networks. Phylogenetic analyses of virus hallmark genes combined with analyses of gene-sharing networks show that replication modules of five BCs (three classes of RNA viruses and two classes of reverse-transcribing viruses) evolved from a common ancestor that encoded an RNA-directed RNA polymerase or a reverse transcriptase. Bona fide viruses evolved from this ancestor on multiple, independent occasions via the recruitment of distinct cellular proteins as capsid subunits and other structural components of virions. The single-stranded DNA (ssDNA) viruses are a polyphyletic class, with different groups evolving by recombination between rolling-circle-replicating plasmids, which contributed the replication protein, and positive-sense RNA viruses, which contributed the capsid protein. The double-stranded DNA (dsDNA) viruses are distributed among several large monophyletic groups and arose via the combination of distinct structural modules with equally diverse replication modules. Phylogenomic analyses reveal the finer structure of evolutionary connections among RNA viruses and reverse-transcribing viruses, ssDNA viruses, and large subsets of dsDNA viruses. Taken together, these analyses allow us to outline the global organization of the virus world. Here, we describe the key aspects of this organization and propose a comprehensive hierarchical taxonomy of viruses.
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Affiliation(s)
- Eugene V Koonin
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, USA
| | - Valerian V Dolja
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon, USA
| | - Mart Krupovic
- Institut Pasteur, Archaeal Virology Unit, Department of Microbiology, Paris, France
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, Tempe, Arizona, USA
- Structural Biology Research Unit, Department of Clinical Laboratory Sciences, University of Cape Town, Observatory, Cape Town, South Africa
| | - Yuri I Wolf
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, USA
| | - Natalya Yutin
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, USA
| | - F Murilo Zerbini
- Departamento de Fitopatologia/Bioagro, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Jens H Kuhn
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, Maryland, USA
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23
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Tisza MJ, Pastrana DV, Welch NL, Stewart B, Peretti A, Starrett GJ, Pang YYS, Krishnamurthy SR, Pesavento PA, McDermott DH, Murphy PM, Whited JL, Miller B, Brenchley J, Rosshart SP, Rehermann B, Doorbar J, Ta'ala BA, Pletnikova O, Troncoso JC, Resnick SM, Bolduc B, Sullivan MB, Varsani A, Segall AM, Buck CB. Discovery of several thousand highly diverse circular DNA viruses. eLife 2020; 9:51971. [PMID: 32014111 PMCID: PMC7000223 DOI: 10.7554/elife.51971] [Citation(s) in RCA: 116] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 01/06/2020] [Indexed: 12/18/2022] Open
Abstract
Although millions of distinct virus species likely exist, only approximately 9000 are catalogued in GenBank's RefSeq database. We selectively enriched for the genomes of circular DNA viruses in over 70 animal samples, ranging from nematodes to human tissue specimens. A bioinformatics pipeline, Cenote-Taker, was developed to automatically annotate over 2500 complete genomes in a GenBank-compliant format. The new genomes belong to dozens of established and emerging viral families. Some appear to be the result of previously undescribed recombination events between ssDNA and ssRNA viruses. In addition, hundreds of circular DNA elements that do not encode any discernable similarities to previously characterized sequences were identified. To characterize these ‘dark matter’ sequences, we used an artificial neural network to identify candidate viral capsid proteins, several of which formed virus-like particles when expressed in culture. These data further the understanding of viral sequence diversity and allow for high throughput documentation of the virosphere. When scientists hunt for new DNA sequences, sometimes they get a lot more than they bargained for. Such is the case in metagenomic surveys, which analyze not just DNA of a particular organism, but all the DNA in an environment at large. A vexing problem with these surveys is the overwhelming number of DNA sequences detected that are so different from any known microbe that they cannot be classified using traditional approaches. However, some of these “known unknowns” are undoubtedly viral sequences, because only a fraction of the enormous diversity of viruses has been characterized. This “viral dark matter” is a major obstacle for those studying viruses. This led Tisza et al. to attempt to classify some of the unknown viral sequences in their metagenomic surveys. The search, which specifically focused on viruses with circular DNA genomes, detected over 2,500 circular viral genomes. Intensive analysis revealed that many of these genomes had similar makeup to previously discovered viruses, but hundreds of them were totally different from any known virus, based on typical methods of comparison. Computational analysis of genes that were conserved among some of these brand-new circular sequences often revealed virus-like features. Experiments on a few of these genes showed that they encoded proteins capable of forming particles reminiscent of characteristic viral shells, implying that these new sequences are indeed viruses. Tisza et al. have added the 2,500 newly characterized viral sequences to the publicly accessible GenBank database, and the sequences are being considered for the more authoritative RefSeq database, which currently contains around 9,000 complete viral genomes. The expanded databases will hopefully now better equip scientists to explore the enormous diversity of viruses and help medics and veterinarians to detect disease-causing viruses in humans and other animals.
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Affiliation(s)
- Michael J Tisza
- Lab of Cellular Oncology, National Cancer Institute, National Institutes of Health, Bethesda, United States
| | - Diana V Pastrana
- Lab of Cellular Oncology, National Cancer Institute, National Institutes of Health, Bethesda, United States
| | - Nicole L Welch
- Lab of Cellular Oncology, National Cancer Institute, National Institutes of Health, Bethesda, United States
| | - Brittany Stewart
- Lab of Cellular Oncology, National Cancer Institute, National Institutes of Health, Bethesda, United States
| | - Alberto Peretti
- Lab of Cellular Oncology, National Cancer Institute, National Institutes of Health, Bethesda, United States
| | - Gabriel J Starrett
- Lab of Cellular Oncology, National Cancer Institute, National Institutes of Health, Bethesda, United States
| | - Yuk-Ying S Pang
- Lab of Cellular Oncology, National Cancer Institute, National Institutes of Health, Bethesda, United States
| | - Siddharth R Krishnamurthy
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, United States
| | - Patricia A Pesavento
- Department of Pathology, Microbiology, and Immunology, University of California, Davis, Davis, United States
| | - David H McDermott
- Molecular Signaling Section, Laboratory of Molecular Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, United States
| | - Philip M Murphy
- Molecular Signaling Section, Laboratory of Molecular Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, United States
| | - Jessica L Whited
- Department of Orthopedic Surgery, Harvard Medical School, The Harvard Stem Cell Institute, Brigham and Women's Hospital, Boston, United States.,Broad Institute of MIT and Harvard, Cambridge, United States.,Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, United States
| | - Bess Miller
- Department of Orthopedic Surgery, Harvard Medical School, The Harvard Stem Cell Institute, Brigham and Women's Hospital, Boston, United States.,Broad Institute of MIT and Harvard, Cambridge, United States
| | - Jason Brenchley
- Barrier Immunity Section, Lab of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Cambridge, United States
| | - Stephan P Rosshart
- Immunology Section, Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, United States
| | - Barbara Rehermann
- Immunology Section, Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, United States
| | - John Doorbar
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | | | - Olga Pletnikova
- Department of Pathology (Neuropathology), Johns Hopkins University School of Medicine, Baltimore, United States
| | - Juan C Troncoso
- Department of Pathology (Neuropathology), Johns Hopkins University School of Medicine, Baltimore, United States
| | - Susan M Resnick
- Laboratory of Behavioral Neuroscience, National Institute on Aging, National Institutes of Health, Baltimore, United States
| | - Ben Bolduc
- Department of Microbiology, Ohio State University, Columbus, United States
| | - Matthew B Sullivan
- Department of Microbiology, Ohio State University, Columbus, United States.,Civil Environmental and Geodetic Engineering, Ohio State University, Columbus, United States
| | - Arvind Varsani
- The Biodesign Center of Fundamental and Applied Microbiomics, School of Life Sciences, Center for Evolution and Medicine, Arizona State University, Tempe, United States.,Structural Biology Research Unit, Department of Clinical Laboratory Sciences, University of Cape Town, Rondebosch, South Africa
| | - Anca M Segall
- Viral Information Institute and Department of Biology, San Diego State University, San Diego, United States
| | - Christopher B Buck
- Lab of Cellular Oncology, National Cancer Institute, National Institutes of Health, Bethesda, United States
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24
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de Villiers EM, Gunst K, Chakraborty D, Ernst C, Bund T, Zur Hausen H. A specific class of infectious agents isolated from bovine serum and dairy products and peritumoral colon cancer tissue. Emerg Microbes Infect 2019; 8:1205-1218. [PMID: 31409221 PMCID: PMC6713099 DOI: 10.1080/22221751.2019.1651620] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The in silico analyses of 109 replication-competent genomic DNA sequences isolated from cow milk and its products (97 in the bovine meat and milk factors 2 group – BMMF2, and additional 4 in BMMF1) seems to place these in a specific class of infectious agents spanning between bacterial plasmid and circular ssDNA viruses. Satellite-type small plasmids with partial homology to larger genomes, were also isolated in both groups. A member of the BMMF1 group H1MBS.1 was recovered in a distinctly modified form from colon tissue by laser microdissection. Although the evolutionary origin is unknown, it draws the attention to the existence of a hitherto unrecognized, broad spectrum of potential pathogens. Indirect hints to the origin and structure of our isolates, as well as to their replicative behaviour, result from parallels drawn to the Hepatitis deltavirus genome structure and replication.
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Affiliation(s)
- Ethel-Michele de Villiers
- a Episomal-Persistent DNA in Cancer- and Chronic Diseases, Deutsches Krebsforschungszentrum , Heidelberg , Germany
| | - Karin Gunst
- a Episomal-Persistent DNA in Cancer- and Chronic Diseases, Deutsches Krebsforschungszentrum , Heidelberg , Germany
| | - Deblina Chakraborty
- a Episomal-Persistent DNA in Cancer- and Chronic Diseases, Deutsches Krebsforschungszentrum , Heidelberg , Germany
| | - Claudia Ernst
- a Episomal-Persistent DNA in Cancer- and Chronic Diseases, Deutsches Krebsforschungszentrum , Heidelberg , Germany
| | - Timo Bund
- a Episomal-Persistent DNA in Cancer- and Chronic Diseases, Deutsches Krebsforschungszentrum , Heidelberg , Germany
| | - Harald Zur Hausen
- a Episomal-Persistent DNA in Cancer- and Chronic Diseases, Deutsches Krebsforschungszentrum , Heidelberg , Germany
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25
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Multiple origins of prokaryotic and eukaryotic single-stranded DNA viruses from bacterial and archaeal plasmids. Nat Commun 2019; 10:3425. [PMID: 31366885 PMCID: PMC6668415 DOI: 10.1038/s41467-019-11433-0] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Accepted: 07/10/2019] [Indexed: 02/07/2023] Open
Abstract
Single-stranded (ss) DNA viruses are a major component of the earth virome. In particular, the circular, Rep-encoding ssDNA (CRESS-DNA) viruses show high diversity and abundance in various habitats. By combining sequence similarity network and phylogenetic analyses of the replication proteins (Rep) belonging to the HUH endonuclease superfamily, we show that the replication machinery of the CRESS-DNA viruses evolved, on three independent occasions, from the Reps of bacterial rolling circle-replicating plasmids. The CRESS-DNA viruses emerged via recombination between such plasmids and cDNA copies of capsid genes of eukaryotic positive-sense RNA viruses. Similarly, the rep genes of prokaryotic DNA viruses appear to have evolved from HUH endonuclease genes of various bacterial and archaeal plasmids. Our findings also suggest that eukaryotic polyomaviruses and papillomaviruses with dsDNA genomes have evolved via parvoviruses from CRESS-DNA viruses. Collectively, our results shed light on the complex evolutionary history of a major class of viruses revealing its polyphyletic origins. Most single-stranded DNA viruses have small genomes replicated by rolling circle mechanism which is initiated by the Rep protein. Here, using sequence similarity network and phylogenetic analyses, Kazlauskas et al. show that viral Reps evolved from Reps of bacterial and archaeal plasmids on multiple independent occasions.
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Genome Sequences of Three Cruciviruses Found in the Willamette Valley (Oregon). Microbiol Resour Announc 2019; 8:8/23/e00447-19. [PMID: 31171623 PMCID: PMC6554611 DOI: 10.1128/mra.00447-19] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Cruciviruses are single-stranded DNA (ssDNA) viruses whose genomes suggest the possibility of gene transfer between DNA and RNA viruses. Many crucivirus genome sequences have been found in metagenomic data sets, although no crucivirus has been isolated. Cruciviruses are single-stranded DNA (ssDNA) viruses whose genomes suggest the possibility of gene transfer between DNA and RNA viruses. Many crucivirus genome sequences have been found in metagenomic data sets, although no crucivirus has been isolated. Here, we present the complete genome sequences of three cruciviruses recovered from environmental samples from Oregon.
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Abstract
Single-stranded (ss)DNA viruses are extremely widespread, infect diverse hosts from all three domains of life and include important pathogens. Most ssDNA viruses possess small genomes that replicate by the rolling-circle-like mechanism initiated by a distinct virus-encoded endonuclease. High throughput genome sequencing and improved bioinformatics tools have yielded vast information on presence of ssDNA viruses in diverse habitats. The simple genome of ssDNA viruses have high propensity to undergo mutation and recombination often emerging as threat to human civilization. Interestingly their genome is found embedded in fossils dating back to million years. The unusual evolutionary history of ssDNA viruses reveal evidences of horizontal gene transfer, sometimes between different species and genera.
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Jin M, Guo X, Zhang R, Qu W, Gao B, Zeng R. Diversities and potential biogeochemical impacts of mangrove soil viruses. MICROBIOME 2019; 7:58. [PMID: 30975205 PMCID: PMC6460857 DOI: 10.1186/s40168-019-0675-9] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 03/28/2019] [Indexed: 05/19/2023]
Abstract
BACKGROUND Mangroves are ecologically and economically important forests of the tropics. As one of the most carbon-rich biomes, mangroves account for 11% of the total input of terrestrial carbon into oceans. Although viruses are considered to significantly influence local and global biogeochemical cycles, little information is available regarding the community structure, genetic diversity and ecological roles of viruses in mangrove ecosystems. METHODS Here, we utilised viral metagenomics sequencing and virome-specific bioinformatics tools to study viral communities in six mangrove soil samples collected from different mangrove habitats in Southern China. RESULTS Mangrove soil viruses were found to be largely uncharacterised. Phylogenetic analyses of the major viral groups demonstrated extensive diversity and previously unknown viral clades and suggested that global mangrove viral communities possibly comprise evolutionarily close genotypes. Comparative analysis of viral genotypes revealed that mangrove soil viromes are mainly affected by marine waters, with less influence coming from freshwaters. Notably, we identified abundant auxiliary carbohydrate-active enzyme (CAZyme) genes from mangrove viruses, most of which participate in biolysis of complex polysaccharides, which are abundant in mangrove soils and organism debris. Host prediction results showed that viral CAZyme genes are diverse and probably widespread in mangrove soil phages infecting diverse bacteria of different phyla. CONCLUSIONS Our results showed that mangrove viruses are diverse and probably directly manipulate carbon cycling by participating in biomass recycling of complex polysaccharides, providing the knowledge essential in revealing the ecological roles of viruses in mangrove ecosystems.
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Affiliation(s)
- Min Jin
- State Key Laboratory Breeding Base of Marine Genetic Resource, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China
| | - Xun Guo
- State Key Laboratory Breeding Base of Marine Genetic Resource, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China
| | - Rui Zhang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Institute of Marine Microbes and Ecospheres, Xiamen University, Xiamen, China
| | - Wu Qu
- State Key Laboratory Breeding Base of Marine Genetic Resource, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Institute of Marine Microbes and Ecospheres, Xiamen University, Xiamen, China
| | - Boliang Gao
- State Key Laboratory Breeding Base of Marine Genetic Resource, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Institute of Marine Microbes and Ecospheres, Xiamen University, Xiamen, China
| | - Runying Zeng
- State Key Laboratory Breeding Base of Marine Genetic Resource, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen, China
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Kirsip H, Abroi A. Protein Structure-Guided Hidden Markov Models (HMMs) as A Powerful Method in the Detection of Ancestral Endogenous Viral Elements. Viruses 2019; 11:v11040320. [PMID: 30986983 PMCID: PMC6520822 DOI: 10.3390/v11040320] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 03/23/2019] [Accepted: 03/27/2019] [Indexed: 12/19/2022] Open
Abstract
It has been believed for a long time that the transfer and fixation of genetic material from RNA viruses to eukaryote genomes is very unlikely. However, during the last decade, there have been several cases in which “virus-to-host” gene transfer from various viral families into various eukaryotic phyla have been described. These transfers have been identified by sequence similarity, which may disappear very quickly, especially in the case of RNA viruses. However, compared to sequences, protein structure is known to be more conserved. Applying protein structure-guided protein domain-specific Hidden Markov Models, we detected homologues of the Virgaviridae capsid protein in Schizophora flies. Further data analysis supported “virus-to-host” transfer into Schizophora ancestors as a single transfer event. This transfer was not identifiable by BLAST or by other methods we applied. Our data show that structure-guided Hidden Markov Models should be used to detect ancestral virus-to-host transfers.
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Affiliation(s)
- Heleri Kirsip
- Department of Bioinformatics, University of Tartu, Tartu, 51010, Riia 23, Estonia.
| | - Aare Abroi
- Institute of Technology, University of Tartu, Tartu, 50411, Nooruse 1, Estonia.
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Zhao L, Rosario K, Breitbart M, Duffy S. Eukaryotic Circular Rep-Encoding Single-Stranded DNA (CRESS DNA) Viruses: Ubiquitous Viruses With Small Genomes and a Diverse Host Range. Adv Virus Res 2018; 103:71-133. [PMID: 30635078 DOI: 10.1016/bs.aivir.2018.10.001] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
While single-stranded DNA (ssDNA) was once thought to be a relatively rare genomic architecture for viruses, modern metagenomics sequencing has revealed circular ssDNA viruses in most environments and in association with diverse hosts. In particular, circular ssDNA viruses encoding a homologous replication-associated protein (Rep) have been identified in the majority of eukaryotic supergroups, generating interest in the ecological effects and evolutionary history of circular Rep-encoding ssDNA viruses (CRESS DNA) viruses. This review surveys the explosion of sequence diversity and expansion of eukaryotic CRESS DNA taxonomic groups over the last decade, highlights similarities between the well-studied geminiviruses and circoviruses with newly identified groups known only through their genome sequences, discusses the ecology and evolution of eukaryotic CRESS DNA viruses, and speculates on future research horizons.
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Affiliation(s)
- Lele Zhao
- Department of Ecology, Evolution and Natural Resources, Rutgers, the State University of New Jersey, New Brunswick, NJ, United States
| | - Karyna Rosario
- College of Marine Science, University of South Florida, Saint Petersburg, FL, United States
| | - Mya Breitbart
- College of Marine Science, University of South Florida, Saint Petersburg, FL, United States
| | - Siobain Duffy
- Department of Ecology, Evolution and Natural Resources, Rutgers, the State University of New Jersey, New Brunswick, NJ, United States.
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Lauber C, Seifert M, Bartenschlager R, Seitz S. Discovery of highly divergent lineages of plant-associated astro-like viruses sheds light on the emergence of potyviruses. Virus Res 2018; 260:38-48. [PMID: 30452944 DOI: 10.1016/j.virusres.2018.11.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/15/2018] [Accepted: 11/15/2018] [Indexed: 01/06/2023]
Abstract
RNA viruses are believed to have originated from a common ancestor, but how this ancestral genome evolved into the large variety of genomic architectures and viral proteomes we see today remains largely unknown. Tackling this question is hindered by the lack of universally conserved proteins other than the RNA-dependent RNA polymerase (RdRp) as well as a limited RNA virus sampling. The latter is still heavily biased towards relatively few viral lineages from a non-representative collection of hosts, which complicates studies aiming to reveal possible trajectories during the evolution of RNA virus genomes that are favored over others. We report the discovery of 11 highly divergent lineages of viruses with genomic architectures that resemble those of the astroviruses. These genomes were initially identified through a sequence homology search in more than 6600 plant transcriptome projects from the Sequence Read Archive (SRA) using astrovirus representatives as query. Seed-based viral genome assembly of unprocessed SRA data for several dozens of the most promising hits resulted in two viral genome sequences with full-length coding regions, nine partial genomes and a much larger number of short sequence fragments. Genomic and phylogenetic characterization of the 11 discovered viruses, which we coined plastroviruses (plant-associated astro-like viruses), showed that they are related to both astro- and potyviruses and allowed us to identify divergent Serine protease, RdRp and viral capsid domains encoded in the plastrovirus genome. Interestingly, some of the plastroviruses shared different features with potyviruses including the replacement of the catalytic Ser by a Cys residue in the protease active site. These results suggest that plastroviruses may have reached different points on an evolutionary trajectory from astro-like to poty-like genomes. A model how potyviruses might have emerged from (pl)astro-like ancestors in a multi-step process is discussed.
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Affiliation(s)
- Chris Lauber
- Institute for Medical Informatics and Biometry, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; Division of Virus-associated Carcinogenesis, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; European Virus Bioinformatics Center (EVBC), 07743 Jena, Germany.
| | - Michael Seifert
- Institute for Medical Informatics and Biometry, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
| | - Ralf Bartenschlager
- Division of Virus-associated Carcinogenesis, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; Department of Infectious Diseases, Molecular Virology, Heidelberg University, 69120 Heidelberg, Germany
| | - Stefan Seitz
- Division of Virus-associated Carcinogenesis, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; Department of Infectious Diseases, Molecular Virology, Heidelberg University, 69120 Heidelberg, Germany
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Rosario K, Mettel KA, Benner BE, Johnson R, Scott C, Yusseff-Vanegas SZ, Baker CCM, Cassill DL, Storer C, Varsani A, Breitbart M. Virus discovery in all three major lineages of terrestrial arthropods highlights the diversity of single-stranded DNA viruses associated with invertebrates. PeerJ 2018; 6:e5761. [PMID: 30324030 PMCID: PMC6186406 DOI: 10.7717/peerj.5761] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 09/16/2018] [Indexed: 11/20/2022] Open
Abstract
Viruses encoding a replication-associated protein (Rep) within a covalently closed, single-stranded (ss)DNA genome are among the smallest viruses known to infect eukaryotic organisms, including economically valuable agricultural crops and livestock. Although circular Rep-encoding ssDNA (CRESS DNA) viruses are a widespread group for which our knowledge is rapidly expanding, biased sampling toward vertebrates and land plants has limited our understanding of their diversity and evolution. Here, we screened terrestrial arthropods for CRESS DNA viruses and report the identification of 44 viral genomes and replicons associated with specimens representing all three major terrestrial arthropod lineages, namely Euchelicerata (spiders), Hexapoda (insects), and Myriapoda (millipedes). We identified virus genomes belonging to three established CRESS DNA viral families (Circoviridae, Genomoviridae, and Smacoviridae); however, over half of the arthropod-associated viral genomes are only distantly related to currently classified CRESS DNA viral sequences. Although members of viral and satellite families known to infect plants (Geminiviridae, Nanoviridae, Alphasatellitidae) were not identified in this study, these plant-infecting CRESS DNA viruses and replicons are transmitted by hemipterans. Therefore, members from six out of the seven established CRESS DNA viral families circulate among arthropods. Furthermore, a phylogenetic analysis of Reps, including endogenous viral sequences, reported to date from a wide array of organisms revealed that most of the known CRESS DNA viral diversity circulates among invertebrates. Our results highlight the vast and unexplored diversity of CRESS DNA viruses among invertebrates and parallel findings from RNA viral discovery efforts in undersampled taxa.
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Affiliation(s)
- Karyna Rosario
- College of Marine Science, University of South Florida, Saint Petersburg, FL, USA
| | - Kaitlin A Mettel
- College of Marine Science, University of South Florida, Saint Petersburg, FL, USA
| | - Bayleigh E Benner
- College of Marine Science, University of South Florida, Saint Petersburg, FL, USA
| | - Ryan Johnson
- College of Marine Science, University of South Florida, Saint Petersburg, FL, USA
| | - Catherine Scott
- Department of Biological Sciences, University of Toronto, Scarborough, Scarborough, ON, Canada
| | | | - Christopher C M Baker
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA.,Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA
| | - Deby L Cassill
- Department of Biological Sciences, University of South Florida Saint Petersburg, Saint Petersburg, FL, USA
| | - Caroline Storer
- School of Forest Resources and Conservation, University of Florida, Gainesville, FL, USA
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, School of Life Sciences, Center for Evolution and Medicine, Arizona State University, Tempe, AZ, USA.,Structural Biology Research Unit, Department of Clinical Laboratory Sciences, University of Cape Town, Cape Town, South Africa
| | - Mya Breitbart
- College of Marine Science, University of South Florida, Saint Petersburg, FL, USA
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Borges AL, Zhang JY, Rollins MF, Osuna BA, Wiedenheft B, Bondy-Denomy J. Bacteriophage Cooperation Suppresses CRISPR-Cas3 and Cas9 Immunity. Cell 2018; 174:917-925.e10. [PMID: 30033364 DOI: 10.1016/j.cell.2018.06.013] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/27/2018] [Accepted: 06/06/2018] [Indexed: 12/26/2022]
Abstract
Bacteria utilize CRISPR-Cas adaptive immune systems for protection from bacteriophages (phages), and some phages produce anti-CRISPR (Acr) proteins that inhibit immune function. Despite thorough mechanistic and structural information for some Acr proteins, how they are deployed and utilized by a phage during infection is unknown. Here, we show that Acr production does not guarantee phage replication when faced with CRISPR-Cas immunity, but instead, infections fail when phage population numbers fall below a critical threshold. Infections succeed only if a sufficient Acr dose is contributed to a single cell by multiple phage genomes. The production of Acr proteins by phage genomes that fail to replicate leave the cell immunosuppressed, which predisposes the cell for successful infection by other phages in the population. This altruistic mechanism for CRISPR-Cas inhibition demonstrates inter-virus cooperation that may also manifest in other host-parasite interactions.
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Affiliation(s)
- Adair L Borges
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jenny Y Zhang
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - MaryClare F Rollins
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59717, USA
| | - Beatriz A Osuna
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Blake Wiedenheft
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59717, USA
| | - Joseph Bondy-Denomy
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA; Quantitative Biosciences Institute, University of California, San Francisco, San Francisco, CA 94143, USA.
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Abstract
Coinfections involving viruses are being recognized to influence the disease pattern that occurs relative to that with single infection. Classically, we usually think of a clinical syndrome as the consequence of infection by a single virus that is isolated from clinical specimens. However, this biased laboratory approach omits detection of additional agents that could be contributing to the clinical outcome, including novel agents not usually considered pathogens. The presence of an additional agent may also interfere with the targeted isolation of a known virus. Viral interference, a phenomenon where one virus competitively suppresses replication of other coinfecting viruses, is the most common outcome of viral coinfections. In addition, coinfections can modulate virus virulence and cell death, thereby altering disease severity and epidemiology. Immunity to primary virus infection can also modulate immune responses to subsequent secondary infections. In this review, various virological mechanisms that determine viral persistence/exclusion during coinfections are discussed, and insights into the isolation/detection of multiple viruses are provided. We also discuss features of heterologous infections that impact the pattern of immune responsiveness that develops.
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35
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Yutin N, Bäckström D, Ettema TJG, Krupovic M, Koonin EV. Vast diversity of prokaryotic virus genomes encoding double jelly-roll major capsid proteins uncovered by genomic and metagenomic sequence analysis. Virol J 2018; 15:67. [PMID: 29636073 PMCID: PMC5894146 DOI: 10.1186/s12985-018-0974-y] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 03/28/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Analysis of metagenomic sequences has become the principal approach for the study of the diversity of viruses. Many recent, extensive metagenomic studies on several classes of viruses have dramatically expanded the visible part of the virosphere, showing that previously undetected viruses, or those that have been considered rare, actually are important components of the global virome. RESULTS We investigated the provenance of viruses related to tail-less bacteriophages of the family Tectiviridae by searching genomic and metagenomics sequence databases for distant homologs of the tectivirus-like Double Jelly-Roll major capsid proteins (DJR MCP). These searches resulted in the identification of numerous genomes of virus-like elements that are similar in size to tectiviruses (10-15 kilobases) and have diverse gene compositions. By comparison of the gene repertoires, the DJR MCP-encoding genomes were classified into 6 distinct groups that can be predicted to differ in reproduction strategies and host ranges. Only the DJR MCP gene that is present by design is shared by all these genomes, and most also encode a predicted DNA-packaging ATPase; the rest of the genes are present only in subgroups of this unexpectedly diverse collection of DJR MCP-encoding genomes. Only a minority encode a DNA polymerase which is a hallmark of the family Tectiviridae and the putative family "Autolykiviridae". Notably, one of the identified putative DJR MCP viruses encodes a homolog of Cas1 endonuclease, the integrase involved in CRISPR-Cas adaptation and integration of transposon-like elements called casposons. This is the first detected occurrence of Cas1 in a virus. Many of the identified elements are individual contigs flanked by inverted or direct repeats and appear to represent complete, extrachromosomal viral genomes, whereas others are flanked by bacterial genes and thus can be considered as proviruses. These contigs come from metagenomes of widely different environments, some dominated by archaea and others by bacteria, suggesting that collectively, the DJR MCP-encoding elements have a broad host range among prokaryotes. CONCLUSIONS The findings reported here greatly expand the known host range of (putative) viruses of bacteria and archaea that encode a DJR MCP. They also demonstrate the extreme diversity of genome architectures in these viruses that encode no universal proteins other than the capsid protein that was used as the marker for their identification. From a supposedly minor group of bacterial and archaeal viruses, these viruses are emerging as a substantial component of the prokaryotic virome.
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Affiliation(s)
- Natalya Yutin
- National Center for Biotechnology Information, National Library of Medicine. National Institutes of Health, Bethesda, MD, 20894, USA
| | - Disa Bäckström
- Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Box 596, -75123, Uppsala, SE, Sweden
| | - Thijs J G Ettema
- Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Box 596, -75123, Uppsala, SE, Sweden
| | - Mart Krupovic
- Unité Biologie Moléculaire du Gène chez les Extrêmophiles, Department of Microbiology, Institut Pasteur, Paris, France
| | - Eugene V Koonin
- National Center for Biotechnology Information, National Library of Medicine. National Institutes of Health, Bethesda, MD, 20894, USA.
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Kazlauskas D, Varsani A, Krupovic M. Pervasive Chimerism in the Replication-Associated Proteins of Uncultured Single-Stranded DNA Viruses. Viruses 2018; 10:v10040187. [PMID: 29642587 PMCID: PMC5923481 DOI: 10.3390/v10040187] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 04/04/2018] [Accepted: 04/08/2018] [Indexed: 12/16/2022] Open
Abstract
Numerous metagenomic studies have uncovered a remarkable diversity of circular replication-associated protein (Rep)-encoding single-stranded (CRESS) DNA viruses, the majority of which are uncultured and unclassified. Unlike capsid proteins, the Reps show significant similarity across different groups of CRESS DNA viruses and have conserved domain organization with the N-terminal nuclease and the C-terminal helicase domain. Consequently, Rep is widely used as a marker for identification, classification and assessment of the diversity of CRESS DNA viruses. However, it has been shown that in certain viruses the Rep nuclease and helicase domains display incongruent evolutionary histories. Here, we systematically evaluated the co-evolutionary patterns of the two Rep domains across classified and unclassified CRESS DNA viruses. Our analysis indicates that the Reps encoded by members of the families Bacilladnaviridae, Circoviridae, Geminiviridae, Genomoviridae, Nanoviridae and Smacoviridae display largely congruent evolutionary patterns in the two domains. By contrast, among the unclassified CRESS DNA viruses, 71% appear to have chimeric Reps. Such massive chimerism suggests that unclassified CRESS DNA viruses represent a dynamic population in which exchange of gene fragments encoding the nuclease and helicase domains is extremely common. Furthermore, purging of the chimeric sequences uncovered six monophyletic Rep groups that may represent new families of CRESS DNA viruses.
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Affiliation(s)
- Darius Kazlauskas
- Institute of Biotechnology, Vilnius University, Saulėtekio Av. 7, Vilnius 10257, Lithuania.
- Unité Biologie Moléculaire du Gène chez les Extrêmophiles, Department of Microbiology, Institut Pasteur, 25 rue du Docteur Roux, Paris 75015, France.
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, School of Life Sciences, Center for Evolution and Medicine, Arizona State University, Tempe, AZ 85287, USA.
- Structural Biology Research Unit, Department of Integrative Biomedical Sciences, University of Cape Town, Observatory 7700, South Africa.
| | - Mart Krupovic
- Unité Biologie Moléculaire du Gène chez les Extrêmophiles, Department of Microbiology, Institut Pasteur, 25 rue du Docteur Roux, Paris 75015, France.
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Berliner AJ, Mochizuki T, Stedman KM. Astrovirology: Viruses at Large in the Universe. ASTROBIOLOGY 2018; 18:207-223. [PMID: 29319335 DOI: 10.1089/ast.2017.1649] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Viruses are the most abundant biological entities on modern Earth. They are highly diverse both in structure and genomic sequence, play critical roles in evolution, strongly influence terran biogeochemistry, and are believed to have played important roles in the origin and evolution of life. However, there is yet very little focus on viruses in astrobiology. Viruses arguably have coexisted with cellular life-forms since the earliest stages of life, may have been directly involved therein, and have profoundly influenced cellular evolution. Viruses are the only entities on modern Earth to use either RNA or DNA in both single- and double-stranded forms for their genetic material and thus may provide a model for the putative RNA-protein world. With this review, we hope to inspire integration of virus research into astrobiology and also point out pressing unanswered questions in astrovirology, particularly regarding the detection of virus biosignatures and whether viruses could be spread extraterrestrially. We present basic virology principles, an inclusive definition of viruses, review current virology research pertinent to astrobiology, and propose ideas for future astrovirology research foci. Key Words: Astrobiology-Virology-Biosignatures-Origin of life-Roadmap. Astrobiology 18, 207-223.
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Affiliation(s)
| | | | - Kenneth M Stedman
- 3 Center for Life in Extreme Environments and Biology Department, Portland State University , Oregon, USA
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38
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Bistolas KSI, Besemer RM, Rudstam LG, Hewson I. Distribution and Inferred Evolutionary Characteristics of a Chimeric ssDNA Virus Associated with Intertidal Marine Isopods. Viruses 2017; 9:v9120361. [PMID: 29186875 PMCID: PMC5744136 DOI: 10.3390/v9120361] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 11/22/2017] [Accepted: 11/23/2017] [Indexed: 12/30/2022] Open
Abstract
Aquatic invertebrates are common reservoirs of a rapidly expanding group of circular Rep-encoding ssDNA (CRESS-DNA) viruses. This study identified and explored the phylogenetic relationship between novel CRESS-DNA viral genotypes associated with Pacific intertidal isopods Idotea wosnesenskii, Idotea resecata, and Gnorimosphaeroma oregonensis. One genotype associated with I. wosnesenskii, IWaV278, shared sequence similarity and genomic features with Tombusviridae (ssRNA) and Circoviridae (ssDNA) genomes and was putatively assigned to the Cruciviridae clade comprising chimeric viruses. The complete genome of IWaV278 (3478 nt) was computationally completed, validated via Sanger sequencing, and exhibited sequence conservation and codon usage patterns analogous to other members of the Cruciviridae. Viral surveillance (qPCR) indicated that this virus was temporally transient (present in 2015, but not 2017), specific to I. wosnesenskii at a single collection site (Washington, DC, USA), more prevalent among male specimens, and frequently detected within exoskeletal structures. 18S rRNA sequences identified two alveolate protists associated with IWaV278-positive tissues and mechanical epibiont removal of ciliated exoskeletal structures eliminated viral detection, suggesting that the putative host of IWaV278 may be an epibiont of I. wosnesenskii. This investigation provides additional phylogenetic evidence to resolve Cruciviridae evolution and offers insight into the biogeography, specificity, and potential host of a crucivirus genotype.
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Affiliation(s)
| | - Ryan M Besemer
- New Visions Life Sciences, Boards of Cooperative Educational Services of New York State, Ithaca, NY 14850, USA.
- University of North Carolina at Wilmington, Wilmington, NC 28403, USA.
| | - Lars G Rudstam
- Department of Natural Resources and the Cornell Biological Field Station, Cornell University, Bridgeport, NY 14850, USA.
| | - Ian Hewson
- Department of Microbiology, Cornell University, Ithaca, NY 14850, USA.
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39
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Complete fusion of a transposon and herpesvirus created the Teratorn mobile element in medaka fish. Nat Commun 2017; 8:551. [PMID: 28916771 PMCID: PMC5601938 DOI: 10.1038/s41467-017-00527-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 07/05/2017] [Indexed: 01/02/2023] Open
Abstract
Mobile genetic elements (e.g., transposable elements and viruses) display significant diversity with various life cycles, but how novel elements emerge remains obscure. Here, we report a giant (180-kb long) transposon, Teratorn, originally identified in the genome of medaka, Oryzias latipes. Teratorn belongs to the piggyBac superfamily and retains the transposition activity. Remarkably, Teratorn is largely derived from a herpesvirus of the Alloherpesviridae family that could infect fish and amphibians. Genomic survey of Teratorn-like elements reveals that some of them exist as a fused form between piggyBac transposon and herpesvirus genome in teleosts, implying the generality of transposon-herpesvirus fusion. We propose that Teratorn was created by a unique fusion of DNA transposon and herpesvirus, leading to life cycle shift. Our study supports the idea that recombination is the key event in generation of novel mobile genetic elements. Teratorn is a large mobile genetic element originally identified in the small teleost fish medaka. Here, the authors show that Teratorn is derived from the fusion of a piggyBac superfamily DNA transposon and an alloherpesvirus and that it is widely found across teleost fish.
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40
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Tijssen P, Pénzes JJ, Yu Q, Pham HT, Bergoin M. Reprint of: Diversity of small, single-stranded DNA viruses of invertebrates and their chaotic evolutionary past. J Invertebr Pathol 2017; 147:23-36. [PMID: 32781498 DOI: 10.1016/j.jip.2017.06.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 09/14/2016] [Accepted: 09/19/2016] [Indexed: 11/25/2022]
Abstract
A wide spectrum of invertebrates is susceptible to various single-stranded DNA viruses. Their relative simplicity of replication and dependence on actively dividing cells makes them highly pathogenic for many invertebrates (Hexapoda, Decapoda, etc.). We present their taxonomical classification and describe the evolutionary relationships between various groups of invertebrate-infecting viruses, their high degree of recombination, and their relationship to viruses infecting mammals or other vertebrates. They share characteristics of the viruses within the various families, including structure of the virus particle, genome properties, and gene expression strategy.
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Affiliation(s)
- Peter Tijssen
- Laboratoire de Virologie (Bldg 18), Institut National de Recherche Scientifique-Institut Armand-Frappier, 531 Boul. des Prairies, Laval, QC, H7V 1B7, Canada
| | - Judit J Pénzes
- Laboratoire de Virologie (Bldg 18), Institut National de Recherche Scientifique-Institut Armand-Frappier, 531 Boul. des Prairies, Laval, QC, H7V 1B7, Canada
| | - Qian Yu
- Laboratoire de Virologie (Bldg 18), Institut National de Recherche Scientifique-Institut Armand-Frappier, 531 Boul. des Prairies, Laval, QC, H7V 1B7, Canada
| | - Hanh T Pham
- Laboratoire de Virologie (Bldg 18), Institut National de Recherche Scientifique-Institut Armand-Frappier, 531 Boul. des Prairies, Laval, QC, H7V 1B7, Canada
| | - Max Bergoin
- Laboratoire de Virologie (Bldg 18), Institut National de Recherche Scientifique-Institut Armand-Frappier, 531 Boul. des Prairies, Laval, QC, H7V 1B7, Canada; Laboratoire de Pathologie Comparée, Faculté des Sciences, Université Montpellier, Place Eugène Bataillon, 34095 Montpellier, France
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41
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Díaz-Muñoz SL. Viral coinfection is shaped by host ecology and virus-virus interactions across diverse microbial taxa and environments. Virus Evol 2017; 3:vex011. [PMID: 28469939 PMCID: PMC5407056 DOI: 10.1093/ve/vex011] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Infection of more than one virus in a host, coinfection, is common across taxa and environments. Viral coinfection can enable genetic exchange, alter the dynamics of infections, and change the course of viral evolution. Yet, a systematic test of the factors explaining variation in viral coinfection across different taxa and environments awaits completion. Here I employ three microbial data sets of virus–host interactions covering cross-infectivity, culture coinfection, and single-cell coinfection (total: 6,564 microbial hosts, 13,103 viruses) to provide a broad, comprehensive picture of the ecological and biological factors shaping viral coinfection. I found evidence that ecology and virus–virus interactions are recurrent factors shaping coinfection patterns. Host ecology was a consistent and strong predictor of coinfection across all three data sets: cross-infectivity, culture coinfection, and single-cell coinfection. Host phylogeny or taxonomy was a less consistent predictor, being weak or absent in the cross-infectivity and single-cell coinfection models, yet it was the strongest predictor in the culture coinfection model. Virus–virus interactions strongly affected coinfection. In the largest test of superinfection exclusion to date, prophage sequences reduced culture coinfection by other prophages, with a weaker effect on extrachromosomal virus coinfection. At the single-cell level, prophage sequences eliminated coinfection. Virus–virus interactions also increased culture coinfection with ssDNA–dsDNA coinfections >2× more likely than ssDNA-only coinfections. The presence of CRISPR spacers was associated with a ∼50% reduction in single-cell coinfection in a marine bacteria, despite the absence of exact spacer matches in any active infection. Collectively, these results suggest the environment bacteria inhabit and the interactions among surrounding viruses are two factors consistently shaping viral coinfection patterns. These findings highlight the role of virus–virus interactions in coinfection with implications for phage therapy, microbiome dynamics, and viral infection treatments.
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Affiliation(s)
- Samuel L Díaz-Muñoz
- Department of Biology, Center for Genomics and Systems Biology, New York University, 12 Waverly Place, New York, NY 10003, USA
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42
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Parmar KM, Gaikwad SL, Dhakephalkar PK, Kothari R, Singh RP. Intriguing Interaction of Bacteriophage-Host Association: An Understanding in the Era of Omics. Front Microbiol 2017; 8:559. [PMID: 28439260 PMCID: PMC5383658 DOI: 10.3389/fmicb.2017.00559] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 03/16/2017] [Indexed: 01/09/2023] Open
Abstract
Innovations in next-generation sequencing technology have introduced new avenues in microbial studies through “omics” approaches. This technology has considerably augmented the knowledge of the microbial world without isolation prior to their identification. With an enormous volume of bacterial “omics” data, considerable attempts have been recently invested to improve an insight into virosphere. The interplay between bacteriophages and their host has created a significant influence on the biogeochemical cycles, microbial diversity, and bacterial population regulation. This review highlights various concepts such as genomics, transcriptomics, proteomics, and metabolomics to infer the phylogenetic affiliation and function of bacteriophages and their impact on diverse microbial communities. Omics technologies illuminate the role of bacteriophage in an environment, the influences of phage proteins on the bacterial host and provide information about the genes important for interaction with bacteria. These investigations will reveal some of bio-molecules and biomarkers of the novel phage which demand to be unveiled.
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Affiliation(s)
| | | | | | - Ramesh Kothari
- Department of Biosciences, Saurashtra UniversityRajkot, India
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43
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Evolutionary history of ssDNA bacilladnaviruses features horizontal acquisition of the capsid gene from ssRNA nodaviruses. Virology 2017; 504:114-121. [DOI: 10.1016/j.virol.2017.02.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/01/2017] [Accepted: 02/02/2017] [Indexed: 11/21/2022]
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44
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Abstract
Viruses are the most abundant biological entities on earth and show remarkable diversity of genome sequences, replication and expression strategies, and virion structures. Evolutionary genomics of viruses revealed many unexpected connections but the general scenario(s) for the evolution of the virosphere remains a matter of intense debate among proponents of the cellular regression, escaped genes, and primordial virus world hypotheses. A comprehensive sequence and structure analysis of major virion proteins indicates that they evolved on about 20 independent occasions, and in some of these cases likely ancestors are identifiable among the proteins of cellular organisms. Virus genomes typically consist of distinct structural and replication modules that recombine frequently and can have different evolutionary trajectories. The present analysis suggests that, although the replication modules of at least some classes of viruses might descend from primordial selfish genetic elements, bona fide viruses evolved on multiple, independent occasions throughout the course of evolution by the recruitment of diverse host proteins that became major virion components.
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45
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Varsani A, Krupovic M. Sequence-based taxonomic framework for the classification of uncultured single-stranded DNA viruses of the family Genomoviridae. Virus Evol 2017; 3:vew037. [PMID: 28458911 PMCID: PMC5399927 DOI: 10.1093/ve/vew037] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
With the advent of metagenomics approaches, a large diversity of known and unknown viruses has been identified in various types of environmental, plant, and animal samples. One such widespread virus group is the recently established family Genomoviridae which includes viruses with small (∼2-2.4 kb), circular ssDNA genomes encoding rolling-circle replication initiation proteins (Rep) and unique capsid proteins. Here, we propose a sequence-based taxonomic framework for classification of 121 new virus genomes within this family. Genomoviruses display ∼47% sequence diversity, which is very similar to that within the well-established and extensively studied family Geminiviridae (46% diversity). Based on our analysis, we establish a 78% genome-wide pairwise identity as a species demarcation threshold. Furthermore, using a Rep sequence phylogeny-based analysis coupled with the current knowledge on the classification of geminiviruses, we establish nine genera within the Genomoviridae family. These are Gemycircularvirus (n = 73), Gemyduguivirus (n = 1), Gemygorvirus (n = 9), Gemykibivirus (n = 29), Gemykolovirus (n = 3), Gemykrogvirus (n = 3), Gemykroznavirus (n = 1), Gemytondvirus (n = 1), Gemyvongvirus (n = 1). The presented taxonomic framework offers rational classification of genomoviruses based on the sequence information alone and sets an example for future classification of other groups of uncultured viruses discovered using metagenomics approaches.
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Affiliation(s)
- Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, School of Life sciences, Center for Evolution and Medicine, Arizona State University, Tempe, AZ 85287, USA.,Structural Biology Research Unit, Department of Clinical Laboratory Sciences, University of Cape Town, Observatory 7700, South Africa
| | - Mart Krupovic
- Unité Biologie moléculaire du Gène chez les Extrêmophiles, Department of Microbiology, Institut Pasteur, 25 rue du Docteur Roux, Paris 75015, France
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46
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ssRNA viruses from biotrophic Oomycetes form a new phylogenetic group between Nodaviridae and Tombusviridae. Arch Virol 2017; 162:1319-1324. [DOI: 10.1007/s00705-017-3243-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 01/03/2017] [Indexed: 10/20/2022]
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47
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Pearson VM, Caudle SB, Rokyta DR. Viral recombination blurs taxonomic lines: examination of single-stranded DNA viruses in a wastewater treatment plant. PeerJ 2016; 4:e2585. [PMID: 27781171 PMCID: PMC5075696 DOI: 10.7717/peerj.2585] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 09/19/2016] [Indexed: 12/26/2022] Open
Abstract
Understanding the structure and dynamics of microbial communities, especially those of economic concern, is of paramount importance to maintaining healthy and efficient microbial communities at agricultural sites and large industrial cultures, including bioprocessors. Wastewater treatment plants are large bioprocessors which receive water from multiple sources, becoming reservoirs for the collection of many viral families that infect a broad range of hosts. To examine this complex collection of viruses, full-length genomes of circular ssDNA viruses were isolated from a wastewater treatment facility using a combination of sucrose-gradient size selection and rolling-circle amplification and sequenced on an Illumina MiSeq. Single-stranded DNA viruses are among the least understood groups of microbial pathogens due to genomic biases and culturing difficulties, particularly compared to the larger, more often studied dsDNA viruses. However, the group contains several notable well-studied examples, including agricultural pathogens which infect both livestock and crops (Circoviridae and Geminiviridae), and model organisms for genetics and evolution studies (Microviridae). Examination of the collected viral DNA provided evidence for 83 unique genotypic groupings, which were genetically dissimilar to known viral types and exhibited broad diversity within the community. Furthermore, although these genomes express similarities to known viral families, such as Circoviridae, Geminiviridae, and Microviridae, many are so divergent that they may represent new taxonomic groups. This study demonstrated the efficacy of the protocol for separating bacteria and large viruses from the sought after ssDNA viruses and the ability to use this protocol to obtain an in-depth analysis of the diversity within this group.
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Affiliation(s)
- Victoria M Pearson
- Department of Biological Science, Florida State University , Tallahassee , FL , USA
| | - S Brian Caudle
- Division of Food Safety, Florida Department of Agriculture and Consumer Services , Tallahassee , FL , USA
| | - Darin R Rokyta
- Department of Biological Science, Florida State University , Tallahassee , FL , USA
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48
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Quaiser A, Krupovic M, Dufresne A, Francez AJ, Roux S. Diversity and comparative genomics of chimeric viruses in Sphagnum-dominated peatlands. Virus Evol 2016; 2:vew025. [PMID: 29492276 PMCID: PMC5822885 DOI: 10.1093/ve/vew025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
A new group of viruses carrying naturally chimeric single-stranded (ss) DNA
genomes that encompass genes derived from eukaryotic ssRNA and ssDNA viruses has
been recently identified by metagenomic studies. The host range, genomic
diversity, and abundance of these chimeric viruses, referred to as cruciviruses,
remain largely unknown. In this article, we assembled and analyzed thirty-seven
new crucivirus genomes from twelve peat viromes, representing twenty-four
distinct genome organizations, and nearly tripling the number of available
genomes for this group. All genomes possess the two characteristic genes
encoding for the conserved capsid protein (CP) and a replication protein.
Additional ORFs were conserved only in nearly identical genomes with no
detectable similarity to known genes. Two cruciviruses possess putative introns
in their replication-associated genes. Sequence and phylogenetic analyses of the
replication proteins revealed intra-gene chimerism in at least eight chimeric
genomes. This highlights the large extent of horizontal gene transfer and
recombination events in the evolution of ssDNA viruses, as previously suggested.
Read mapping analysis revealed that members of the ‘Cruciviridae’ group are
particularly prevalent in peat viromes. Sequences matching the CP ranged from
0.6 up to 10.9 percent in the twelve peat viromes. In contrast, from sixty-nine
available viromes derived from other environments, only twenty-four contained
cruciviruses, which on average accounted for merely 0.2 percent of sequences.
Overall, this study provides new genome information and insights into the
diversity of chimeric viruses, a necessary first step in progressing toward an
accurate quantification and host range identification of these new viruses.
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Affiliation(s)
- Achim Quaiser
- Université de Rennes 1, CNRS UMR6553 EcoBio, Rennes, France.,Department of Microbiology, Institut Pasteur, Paris, France.,Department of Microbiology, Ohio State University, Columbus, OH, USA
| | - Mart Krupovic
- Université de Rennes 1, CNRS UMR6553 EcoBio, Rennes, France.,Department of Microbiology, Institut Pasteur, Paris, France.,Department of Microbiology, Ohio State University, Columbus, OH, USA
| | - Alexis Dufresne
- Université de Rennes 1, CNRS UMR6553 EcoBio, Rennes, France.,Department of Microbiology, Institut Pasteur, Paris, France.,Department of Microbiology, Ohio State University, Columbus, OH, USA
| | - André-Jean Francez
- Université de Rennes 1, CNRS UMR6553 EcoBio, Rennes, France.,Department of Microbiology, Institut Pasteur, Paris, France.,Department of Microbiology, Ohio State University, Columbus, OH, USA
| | - Simon Roux
- Université de Rennes 1, CNRS UMR6553 EcoBio, Rennes, France.,Department of Microbiology, Institut Pasteur, Paris, France.,Department of Microbiology, Ohio State University, Columbus, OH, USA
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49
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Morgan GJ. What is a virus species? Radical pluralism in viral taxonomy. STUDIES IN HISTORY AND PHILOSOPHY OF BIOLOGICAL AND BIOMEDICAL SCIENCES 2016; 59:64-70. [PMID: 26994934 DOI: 10.1016/j.shpsc.2016.02.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 02/27/2016] [Indexed: 06/05/2023]
Abstract
Early attempts in the 1960s at constructing a classification scheme for viruses were phenetic and focused on structural properties of the virion. Over time, the International Committee on the Taxonomy of Viruses (ICTV) has refined its definition of a virus species to include an appeal to evolutionary history. The current ICTV definition defines a viral species in terms of monophyly. The existence of prolific horizontal genetic transfer (HGT) among various groups of viruses presents a challenge to this definition. I argue that the proper response to this mode of evolution is to allow for radical pluralism. Some viruses can be members of more than one species; others don't form species at all and should be classified using new reticulate categories.
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Affiliation(s)
- Gregory J Morgan
- College of Arts and Letters, Stevens Institute of Technology, 1 Castle Point Terrace, Hoboken, NJ 07030, USA
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50
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Tijssen P, Pénzes JJ, Yu Q, Pham HT, Bergoin M. Diversity of small, single-stranded DNA viruses of invertebrates and their chaotic evolutionary past. J Invertebr Pathol 2016; 140:83-96. [PMID: 27663091 DOI: 10.1016/j.jip.2016.09.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 09/14/2016] [Accepted: 09/19/2016] [Indexed: 11/19/2022]
Abstract
A wide spectrum of invertebrates is susceptible to various single-stranded DNA viruses. Their relative simplicity of replication and dependence on actively dividing cells makes them highly pathogenic for many invertebrates (Hexapoda, Decapoda, etc.). We present their taxonomical classification and describe the evolutionary relationships between various groups of invertebrate-infecting viruses, their high degree of recombination, and their relationship to viruses infecting mammals or other vertebrates. They share characteristics of the viruses within the various families, including structure of the virus particle, genome properties, and gene expression strategy.
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Affiliation(s)
- Peter Tijssen
- Laboratoire de Virologie (Bldg 18), Institut National de Recherche Scientifique-Institut Armand-Frappier, 531 Boul. des Prairies, Laval, QC, H7V 1B7, Canada
| | - Judit J Pénzes
- Laboratoire de Virologie (Bldg 18), Institut National de Recherche Scientifique-Institut Armand-Frappier, 531 Boul. des Prairies, Laval, QC, H7V 1B7, Canada
| | - Qian Yu
- Laboratoire de Virologie (Bldg 18), Institut National de Recherche Scientifique-Institut Armand-Frappier, 531 Boul. des Prairies, Laval, QC, H7V 1B7, Canada
| | - Hanh T Pham
- Laboratoire de Virologie (Bldg 18), Institut National de Recherche Scientifique-Institut Armand-Frappier, 531 Boul. des Prairies, Laval, QC, H7V 1B7, Canada
| | - Max Bergoin
- Laboratoire de Virologie (Bldg 18), Institut National de Recherche Scientifique-Institut Armand-Frappier, 531 Boul. des Prairies, Laval, QC, H7V 1B7, Canada; Laboratoire de Pathologie Comparée, Faculté des Sciences, Université Montpellier, Place Eugène Bataillon, 34095 Montpellier, France
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