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Wang J, Zhou J, Chen M, Li Z, Song S. Identification and Genome Characterization of a Dahlia Common Mosaic Virus Isolate from China. Genes (Basel) 2023; 14:1833. [PMID: 37895182 PMCID: PMC10606001 DOI: 10.3390/genes14101833] [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: 09/02/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 10/29/2023] Open
Abstract
Dahlia (Dahlia variabilis) is a widely cultivated ornamental and medicinal plant in China. Recently, dahlia plants with symptoms of leaf mottling and distortion were collected in Hohhot, Inner Mongolia, China. The presence of dahlia common mosaic virus (DCMV), an unassigned species in the genus Caulimovirus, was confirmed by high-throughput sequencing. Three fragments of DCMV Inner Mongolia isolate (DCMV-IN) were PCR-amplified with specific primers, sequenced and assembled into the complete genome sequence with a GenBank accession number of OR494328. The double-stranded circular DNA genome of DCMV-IN consists of 7949 bp and contains six open reading frames (ORFs). Sequence analysis showed that DCMV-IN shared high sequence identities with other DCMV isolates available in the GenBank database. Phylogenetic analysis of DCMV isolates and other representative caulimoviruses based on genome sequence clustered four DCMV isolates to a single branch which was closest to dahlia mosaic virus (DMV). No recombination event was detected among the four DCMV isolates.
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Affiliation(s)
- Jing Wang
- College of Plant Protection, Northeast Agricultural University, Harbin 150030, China
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
| | - Jiaying Zhou
- College of Plant Protection, Northeast Agricultural University, Harbin 150030, China
| | - Ming Chen
- College of Plant Protection, Northeast Agricultural University, Harbin 150030, China
| | - Zhengnan Li
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Shuang Song
- College of Plant Protection, Northeast Agricultural University, Harbin 150030, China
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
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Tsushima D, Fuji SI. Comparison of two highly sensitive methods to detect potato spindle tuber viroid in Dahlia using quantitative-reverse transcription-polymerase chain reaction assays. J Virol Methods 2021; 300:114401. [PMID: 34883102 DOI: 10.1016/j.jviromet.2021.114401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 08/30/2021] [Accepted: 12/02/2021] [Indexed: 10/19/2022]
Abstract
Potato spindle tuber viroid (PSTVd) belongs to the Pospiviroidae family and is the type species for the genus Pospiviroid. In 2011, PSTVd was first detected in dahlias in Japan. Since that time, unregistered PSTVd isolates have been identified in seven field-grown dahlia cultivars. None of the infected dahlias showed disease symptoms during the early stages of infection, however, growth suppression occasionally occurred during later stages. Therefore, in dahlia, diagnosing PSTVd by the external appearance of plants is difficult, and the threat of new PSTVd isolates spreading to other susceptible hosts still remains. In this study, we developed an efficient inspection method using several dahlia plant tissues and organs including dried bulbs. This developed method will be useful for inspecting seedlings to prevent the invasion of PSTVd at the border.
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Affiliation(s)
- Daiki Tsushima
- Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Japan
| | - Shin-Ichi Fuji
- Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Japan.
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Yamamoto D, Neriya Y, Suzuki T, Nishigawa H, Natsuaki T. Construction of an infectious dahlia common mosaic virus clone. Arch Virol 2021; 166:3179-3182. [PMID: 34498122 DOI: 10.1007/s00705-021-05225-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 07/15/2021] [Indexed: 11/29/2022]
Abstract
Dahlia is a major ornamental plant that is cultivated worldwide. However, dahlia plants, which are mainly propagated through vegetative reproduction, are susceptible to widespread damage by viruses, and viral control requires that the nature of the infecting virus(es) be known. In this study, dahlia common mosaic virus (DCMV) was detected for the first time in Japan and sequenced. This is the first report of an infectious DCMV clone being constructed, and it will aid in the characterization of DCMV.
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Affiliation(s)
- Daiki Yamamoto
- School of Agriculture, Utsunomiya University, Mine-machi 350, Utsunomiya, Tochigi, 321-8505, Japan
| | - Yutaro Neriya
- School of Agriculture, Utsunomiya University, Mine-machi 350, Utsunomiya, Tochigi, 321-8505, Japan.
| | - Tomohiro Suzuki
- Center for Bioscience Research and Education, Utsunomiya University, Mine-machi 350, Utsunomiya, Tochigi, 321-8505, Japan
| | - Hisashi Nishigawa
- School of Agriculture, Utsunomiya University, Mine-machi 350, Utsunomiya, Tochigi, 321-8505, Japan
| | - Tomohide Natsuaki
- School of Agriculture, Utsunomiya University, Mine-machi 350, Utsunomiya, Tochigi, 321-8505, Japan
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Rosario K, Dayaram A, Marinov M, Ware J, Kraberger S, Stainton D, Breitbart M, Varsani A. Diverse circular ssDNA viruses discovered in dragonflies (Odonata: Epiprocta). J Gen Virol 2012; 93:2668-2681. [PMID: 22915694 DOI: 10.1099/vir.0.045948-0] [Citation(s) in RCA: 149] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Viruses with circular ssDNA genomes that encode a replication initiator protein (Rep) are among the smallest viruses known to infect both eukaryotic and prokaryotic organisms. In the past few years an overwhelming diversity of novel circular Rep-encoding ssDNA (CRESS-DNA) viruses has been unearthed from various hosts and environmental sources. Since there is limited information regarding CRESS-DNA viruses in invertebrates, this study explored the diversity of CRESS-DNA viruses circulating among insect populations by targeting dragonflies (Epiprocta), top insect predators that accumulate viruses from their insect prey over space and time. Using degenerate PCR and rolling circle amplification coupled with restriction digestion, 17 CRESS-DNA viral genomes were recovered from eight different dragonfly species collected in tropical and temperate regions. Nine of the genomes are similar to cycloviruses and represent five species within this genus, suggesting that cycloviruses are commonly associated with insects. Three of the CRESS-DNA viruses share conserved genomic features with recently described viruses similar to the mycovirus Sclerotinia sclerotiorum hypovirulence-associated DNA virus 1, leading to the proposal of the genus Gemycircularvirus. The remaining viruses are divergent species representing four novel CRESS-DNA viral genera, including a gokushovirus-like prokaryotic virus (microphage) and three eukaryotic viruses with Reps similar to circoviruses. The novelty of CRESS-DNA viruses identified in dragonflies using simple molecular techniques indicates that there is an unprecedented diversity of ssDNA viruses among insect populations.
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Affiliation(s)
- Karyna Rosario
- College of Marine Science, University of South Florida, 140 Seventh Avenue South, St Petersburg, FL 33701, USA
| | - Anisha Dayaram
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
| | - Milen Marinov
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
| | - Jessica Ware
- Department of Biological Sciences, Rutgers University, 249 University Avenue, Newark, NJ 07102, USA
| | - Simona Kraberger
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
| | - Daisy Stainton
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
| | - Mya Breitbart
- College of Marine Science, University of South Florida, 140 Seventh Avenue South, St Petersburg, FL 33701, USA
| | - Arvind Varsani
- Electron Microscope Unit, University of Cape Town, Rondebosch, Cape Town 7701, South Africa.,Biomolecular Interaction Centre, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand.,School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
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