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Zheng W, Teng X, Jiang T, Tang W, Jiang L, Zhu H, Yu X, Chen G, Wang J, Zhang J, Qu M, Zhang X. Genome analysis of a novel avian atadenovirus reveals a possible horizontal gene transfer. Virology 2024; 593:109999. [PMID: 38368638 DOI: 10.1016/j.virol.2024.109999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/09/2024] [Accepted: 01/19/2024] [Indexed: 02/20/2024]
Abstract
We report the discovery and characterization of a novel adenovirus, Zoothera dauma adenovirus (ZdAdV), from a wild bird species, Zoothera dauma (Scaly thrush). This new atadenovirus was discovered by metagenomic sequencing without virus cultivation. Analyses of the full genome sequence revealed that this new virus is a distinct member of the genus Atadenovirus and represents a novel species. ZdAdV has a genome of 34,760 bp with 28 predicted genes and 39% GC content. ZdAdV is the first atadenovirus to contain ORF19, a gene previously found only in aviadenoviruses. Phylogenetic analysis of ORF19 suggests that it was acquired by ZdAdV through horizontal gene transfer from an aviadenovirus. By analyzing all orthologous genes of aviadenovirus, mastadenovirus, atadenovirus, and siadenovirus, we also found potential horizontal gene transfer for the E4 gene in Pigeon aviadenovirus B. Our study widens our knowledge concerning the genetic diversity and evolutionary history of atadenoviruses and their potential for cross-species transmission.
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Affiliation(s)
- Weibo Zheng
- School of Life Sciences, Ludong University, Yantai 264000, Shandong, China; Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai 264000, Shandong, China; Shandong Breeding Environmental Control Engineering Laboratory, Yantai 264000, Shandong, China
| | - Xiaopeng Teng
- Department of Pharmacy, Yantai Yuhuangding Hospital, Yantai 264000, Shandong China
| | - Tingshu Jiang
- Department of Pulmonary and Critical Care Medicine, Yantai Yuhuangding Hospital, Yantai 264000, Shandong China
| | - Wenli Tang
- Shandong Provincial Key Laboratory of Quality Safety Monitoring and Risk Assessment for Animal Products, Jinan 250022, Shandong, China
| | - Linlin Jiang
- School of Life Sciences, Ludong University, Yantai 264000, Shandong, China; Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai 264000, Shandong, China; Shandong Breeding Environmental Control Engineering Laboratory, Yantai 264000, Shandong, China
| | - Hongwei Zhu
- School of Life Sciences, Ludong University, Yantai 264000, Shandong, China; Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai 264000, Shandong, China; Shandong Breeding Environmental Control Engineering Laboratory, Yantai 264000, Shandong, China
| | - Xin Yu
- School of Life Sciences, Ludong University, Yantai 264000, Shandong, China; Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai 264000, Shandong, China; Shandong Breeding Environmental Control Engineering Laboratory, Yantai 264000, Shandong, China
| | - Guozhong Chen
- School of Life Sciences, Ludong University, Yantai 264000, Shandong, China; Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai 264000, Shandong, China; Shandong Breeding Environmental Control Engineering Laboratory, Yantai 264000, Shandong, China
| | - Jiao Wang
- School of Life Sciences, Ludong University, Yantai 264000, Shandong, China; Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai 264000, Shandong, China; Shandong Breeding Environmental Control Engineering Laboratory, Yantai 264000, Shandong, China
| | - Jianlong Zhang
- School of Life Sciences, Ludong University, Yantai 264000, Shandong, China; Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai 264000, Shandong, China; Shandong Breeding Environmental Control Engineering Laboratory, Yantai 264000, Shandong, China
| | - Mingjuan Qu
- School of Life Sciences, Ludong University, Yantai 264000, Shandong, China; Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai 264000, Shandong, China; Shandong Breeding Environmental Control Engineering Laboratory, Yantai 264000, Shandong, China.
| | - Xingxiao Zhang
- School of Life Sciences, Ludong University, Yantai 264000, Shandong, China; Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai 264000, Shandong, China; Shandong Breeding Environmental Control Engineering Laboratory, Yantai 264000, Shandong, China.
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Immunity in Sea Turtles: Review of a Host-Pathogen Arms Race Millions of Years in the Running. Animals (Basel) 2023; 13:ani13040556. [PMID: 36830343 PMCID: PMC9951749 DOI: 10.3390/ani13040556] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/05/2023] [Accepted: 01/20/2023] [Indexed: 02/08/2023] Open
Abstract
The immune system of sea turtles is not completely understood. Sea turtles (as reptiles) bridge a unique evolutionary gap, being ectothermic vertebrates like fish and amphibians and amniotes like birds and mammals. Turtles are ectotherms; thus, their immune system is influenced by environmental conditions like temperature and season. We aim to review the turtle immune system and note what studies have investigated sea turtles and the effect of the environment on the immune response. Turtles rely heavily on the nonspecific innate response rather than the specific adaptive response. Turtles' innate immune effectors include antimicrobial peptides, complement, and nonspecific leukocytes. The antiviral defense is understudied in terms of the diversity of pathogen receptors and interferon function. Turtles also mount adaptive responses to pathogens. Lymphoid structures responsible for lymphocyte activation and maturation are either missing in reptiles or function is affected by season. Turtles are a marker of health for their marine environment, and their immune system is commonly dysregulated because of disease or contaminants. Fibropapillomatosis (FP) is a tumorous disease that afflicts sea turtles and is thought to be caused by a virus and an environmental factor. We aim, by exploring the current understanding of the immune system in turtles, to aid the investigation of environmental factors that contribute to the pathogenesis of this disease and provide options for immunotherapy.
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Adenoviruses in Avian Hosts: Recent Discoveries Shed New Light on Adenovirus Diversity and Evolution. Viruses 2022; 14:v14081767. [PMID: 36016389 PMCID: PMC9416666 DOI: 10.3390/v14081767] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 08/09/2022] [Accepted: 08/11/2022] [Indexed: 11/16/2022] Open
Abstract
While adenoviruses cause infections in a wide range of vertebrates, members of the genus Atadenovirus, Siadenovirus, and Aviadenovirus predominantly infect avian hosts. Several recent studies on avian adenoviruses have encouraged us to re-visit previously proposed adenovirus evolutionary concepts. Complete genomes and partial DNA polymerase sequences of avian adenoviruses were extracted from NCBI and analysed using various software. Genomic analyses and constructed phylogenetic trees identified the atadenovirus origin from an Australian native passerine bird in contrast to the previously established reptilian origin. In addition, we demonstrated that the theories on higher AT content in atadenoviruses are no longer accurate and cannot be considered as a species demarcation criterion for the genus Atadenovirus. Phylogenetic reconstruction further emphasised the need to reconsider siadenovirus origin, and we recommend extended studies on avian adenoviruses in wild birds to provide finer evolutionary resolution.
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Matsvay A, Dyachkova M, Mikhaylov I, Kiselev D, Say A, Burskaia V, Artyushin I, Khafizov K, Shipulin G. Complete Genome Sequence, Molecular Characterization and Phylogenetic Relationships of a Novel Tern Atadenovirus. Microorganisms 2021; 10:31. [PMID: 35056480 PMCID: PMC8781740 DOI: 10.3390/microorganisms10010031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 12/20/2021] [Accepted: 12/22/2021] [Indexed: 01/03/2023] Open
Abstract
Discovery and study of viruses carried by migratory birds are tasks of high importance due to the host's ability to spread infectious diseases over significant distances. With this paper, we present and characterize the first complete genome sequence of atadenovirus from a tern bird (common tern, Sterna hirundo) preliminarily named tern atadenovirus 1 (TeAdV-1). TeAdV-1 genome is a linear double-stranded DNA molecule, 31,334 base pairs which contain 30 methionine-initiated open reading frames with gene structure typical for Atadenovirus genus, and the shortest known inverted terminal repeats (ITRs) within the Atadenovirus genus consisted of 25 bases. The nucleotide composition of the genome is characterized by a low G + C content (33.86%), which is the most AT-rich genome of known avian adenoviruses within Atadenovirus genus. The nucleotide sequence of the TeAdV-1 genome shows high divergence compared to known representatives of the Atadenovirus genus with the highest similarity to the duck atadenovirus 1 (53.7%). Phylogenetic analysis of the protein sequences of core genes confirms the taxonomic affiliation of the new representative to the genus Atadenovirus with the degree of divergence from the known representatives exceeding the interspecies distance within the genus. Thereby we proposed a novel TeAdV-1 to be considered as a separate species.
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Affiliation(s)
- Alina Matsvay
- Federal State Budgetary Institution "Centre for Strategic Planning and Management of Biomedical Health Risks" of the Federal Medical Biological Agency, 119121 Moscow, Russia
- Moscow Institute of Physics and Technology, National Research University, 115184 Moscow, Russia
| | - Marina Dyachkova
- Federal State Budgetary Institution "Centre for Strategic Planning and Management of Biomedical Health Risks" of the Federal Medical Biological Agency, 119121 Moscow, Russia
| | - Ivan Mikhaylov
- Federal State Budgetary Institution "Centre for Strategic Planning and Management of Biomedical Health Risks" of the Federal Medical Biological Agency, 119121 Moscow, Russia
| | - Daniil Kiselev
- Institute for Neurosciences of Montpellier, University of Montpellier, INSERM, 34091 Montpellier, France
| | - Anna Say
- Federal State Budgetary Institution "Centre for Strategic Planning and Management of Biomedical Health Risks" of the Federal Medical Biological Agency, 119121 Moscow, Russia
| | | | - Ilya Artyushin
- Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Kamil Khafizov
- Moscow Institute of Physics and Technology, National Research University, 115184 Moscow, Russia
| | - German Shipulin
- Federal State Budgetary Institution "Centre for Strategic Planning and Management of Biomedical Health Risks" of the Federal Medical Biological Agency, 119121 Moscow, Russia
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Genomic Characterisation of a Highly Divergent Siadenovirus (Psittacine Siadenovirus F) from the Critically Endangered Orange-Bellied Parrot ( Neophema chrysogaster). Viruses 2021; 13:v13091714. [PMID: 34578295 PMCID: PMC8472863 DOI: 10.3390/v13091714] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 01/01/2023] Open
Abstract
Siadenoviruses have been detected in wild and captive birds worldwide. Only nine siadenoviruses have been fully sequenced; however, partial sequences for 30 others, many of these from wild Australian birds, are also described. Some siadenoviruses, e.g., the turkey siadenovirus A, can cause disease; however, most cause subclinical infections. An example of a siadenovirus causing predominately subclinical infections is psittacine siadenovirus 2, proposed name psittacine siadenovirus F (PsSiAdV-F), which is enzootic in the captive breeding population of the critically endangered orange-bellied parrot (OBP, Neophema chrysogaster). Here, we have fully characterised PsSiAdV-F from an OBP. The PsSiAdV-F genome is 25,392 bp in length and contained 25 putative genes. The genome architecture of PsSiAdV-F exhibited characteristics similar to members within the genus Siadenovirus; however, the novel PsSiAdV-F genome was highly divergent, showing highest and lowest sequence similarity to skua siadenovirus A (57.1%) and psittacine siadenovirus D (31.1%), respectively. Subsequent phylogenetic analyses of the novel PsSiAdV-F genome positioned the virus into a phylogenetically distinct sub-clade with all other siadenoviruses and did not show any obvious close evolutionary relationship. Importantly, the resulted tress continually demonstrated that novel PsSiAdV-F evolved prior to all known members except the frog siadenovirus A in the evolution and possibly the ancestor of the avian siadenoviruses. To date, PsSiAdV-F has not been detected in wild parrots, so further studies screening PsSiAdV-F in wild Australian parrots and generating whole genome sequences of siadenoviruses of Australian native passerine species is recommended to fill the siadenovirus evolutionary gaps.
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Athukorala A, Forwood JK, Phalen DN, Sarker S. Molecular Characterisation of a Novel and Highly Divergent Passerine Adenovirus 1. Viruses 2020; 12:v12091036. [PMID: 32957674 PMCID: PMC7551158 DOI: 10.3390/v12091036] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/09/2020] [Accepted: 09/15/2020] [Indexed: 01/16/2023] Open
Abstract
Wild birds harbour a large number of adenoviruses that remain uncharacterised with respect to their genomic organisation, diversity, and evolution within complex ecosystems. Here, we present the first complete genome sequence of an atadenovirus from a passerine bird that is tentatively named Passerine adenovirus 1 (PaAdV-1). The PaAdV-1 genome is 39,664 bp in length, which was the longest atadenovirus to be sequenced, to the best of our knowledge, and contained 42 putative genes. Its genome organisation was characteristic of the members of genus Atadenovirus; however, the novel PaAdV-1 genome was highly divergent and showed the highest sequence similarity with psittacine adenovirus-3 (55.58%). Importantly, PaAdV-1 complete genome was deemed to contain 17 predicted novel genes that were not present in any other adenoviruses sequenced to date, with several of these predicted novel genes encoding proteins that harbour transmembrane helices. Subsequent analysis of the novel PaAdV-1 genome positioned phylogenetically to a distinct sub-clade with all others sequenced atadenoviruses and did not show any obvious close evolutionary relationship. This study concluded that the PaAdV-1 complete genome described here is not closely related to any other adenovirus isolated from avian or other natural host species and that it should be considered a separate species.
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Affiliation(s)
- Ajani Athukorala
- Department of Physiology, Anatomy and Microbiology, School of Life Sciences, La Trobe University, Melbourne, VIC 3086, Australia;
| | - Jade K. Forwood
- School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, NSW 2678, Australia;
| | - David N. Phalen
- Sydney School of Veterinary Science, University of Sydney, Camden, NSW 2570, Australia;
- Schubot Exotic Bird Health, Texas A&M College of Veterinary Medicine and Biomedical Sciences, College Station, TX 77843-4467, USA
| | - Subir Sarker
- Department of Physiology, Anatomy and Microbiology, School of Life Sciences, La Trobe University, Melbourne, VIC 3086, Australia;
- Correspondence: ; Tel.: +61-3-9479-2317; Fax: +61-3-9479-1222
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