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Zhao M, Dos Santos Tavares CP, Schott EJ. Diversity and classification of reoviruses in crustaceans: A proposal. J Invertebr Pathol 2021; 182:107568. [PMID: 33711318 DOI: 10.1016/j.jip.2021.107568] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 01/12/2021] [Accepted: 03/03/2021] [Indexed: 10/21/2022]
Abstract
A variety of reoviruses have been described in crustacean hosts, including shrimp, crayfish, prawn, and especially in crabs. However, only one genus of crustacean reovirus - Cardoreovirus - has been formally recognized by ICTV (International Committee on Taxonomy of Viruses) and most crustacean reoviruses remain unclassified. This arises in part from ambiguous or incomplete information on which to categorize them. In recent years, increased availability of crustacean reovirus genomic sequences is making the discovery and classification of crustacean reoviruses faster and more certain. This minireview describes the properties of the reoviruses infecting crustaceans and suggests an overall classification of brachyuran crustacean reoviruses based on a combination of morphology, host, genome organization pattern and phylogenetic sequence analysis.
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Affiliation(s)
- Mingli Zhao
- Institute of Marine and Environmental Technology, University of Maryland, Baltimore County, Baltimore, MD 21202, USA
| | - Camila Prestes Dos Santos Tavares
- Integrated Group of Aquaculture and Environmental Studies, Federal University of Paraná, Rua dos Funcionários 1540, Curitiba, PR 80035-050, Brazil
| | - Eric J Schott
- Institute of Marine and Environmental Technology, University of Maryland Center for Environmental Science, Baltimore, MD 21202, USA.
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Yuan Y, Fan D, Zhu S, Yang J, Chen J. Identification and characterization of host cell proteins interacting with Scylla serrata reovirus non-structural protein p35. Virus Genes 2016; 53:317-322. [PMID: 27943061 DOI: 10.1007/s11262-016-1418-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 12/02/2016] [Indexed: 12/01/2022]
Abstract
We have previously shown that non-structural protein p35, encoded by Scylla serrata reovirus (SsRV) S10, may act as a viroporin. To characterize the role of p35 protein in the modulation of cellular function, a yeast two-hybrid system was used to screen a cDNA library derived from S. serrata to find its interacting partner. Protein interactions were confirmed in vitro by GST pull-down. Full cDNAs of p35 interactors were cloned by the rapid amplification of cDNA ends. After two-hybrid library screening, we isolated partial cDNAs encoding hemocyanin, cryptocyanin, and TAX1BP1. Interaction of p35 with each of hemocyanin, cryptocyanin, and TAX1BP1 was confirmed by GST pull-down. The full-length cDNA fragments of hemocyanin, cryptocyanin, and TAX1BP1 were 2287, 2422, and 3437 bp, respectively, and they encoded three putative proteins with molecular masses of ~76.9, ~79.2, and ~107.2 kDa, respectively. This study casts new light on the function and physiological significance of p35 during the SsRV replication cycle.
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Affiliation(s)
- Yangyang Yuan
- College of Biological and Environmental Sciences, Zhejiang Wanli University, No.8, South Qianhu Road, Ningbo, Zhejiang Province, 315100, People's Republic of China
| | - Dongyang Fan
- College of Biological and Environmental Sciences, Zhejiang Wanli University, No.8, South Qianhu Road, Ningbo, Zhejiang Province, 315100, People's Republic of China
| | - Sidong Zhu
- College of Biological and Environmental Sciences, Zhejiang Wanli University, No.8, South Qianhu Road, Ningbo, Zhejiang Province, 315100, People's Republic of China
| | - Jifang Yang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, No.8, South Qianhu Road, Ningbo, Zhejiang Province, 315100, People's Republic of China
| | - Jigang Chen
- College of Biological and Environmental Sciences, Zhejiang Wanli University, No.8, South Qianhu Road, Ningbo, Zhejiang Province, 315100, People's Republic of China.
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Ma Y, Dai T, Serwadda A, Shen H. Detecting a novel Eriocheir sinensis reovirus by reverse transcription loop-mediated isothermal amplification assay. Lett Appl Microbiol 2016; 63:363-368. [PMID: 27495940 DOI: 10.1111/lam.12630] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 07/30/2016] [Accepted: 08/01/2016] [Indexed: 11/28/2022]
Abstract
The novel Eriocheir sinensis reovirus (EsRV) is a pathogen that causes severe disease and high mortality rates in cultivated crabs. Here, we established a highly sensitive and specific rapid reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay that was cheaper and more suitable for field applications in crab aquaculture than those of traditional reverse transcription-polymerase chain reaction (RT-PCR) analysis. The amplification was completed within 45 min under isothermal conditions at 65°C. The RT-LAMP test for EsRV had a detection limit of 15 pg, and sensitivity was 100 times greater than that of conventional RT-PCR. The LAMP primers for EsRV were not amplified by other pathogen strains, indicating good specificity. In addition to detection by electrophoresis, RT-LAMP results were detectable by visual observations of reaction tube turbidity, and calcein was added to visually detect the amplification products. These results indicate that this highly convenient, rapid and sensitive RT-LAMP assay can be used to detect EsRV-infected aquatic organisms. SIGNIFICANCE AND IMPACT OF THE STUDY Tremor disease (TD) is one of the most serious diseases of Eriocheir sinensis. A novel E. sinensis reovirus (EsRV) was identified from E. sinensis afflicted with TD and caused high mortality. We developed a reverse transcription loop-mediated isothermal amplification assay with high specificity, sensitivity and rapidity to detect EsRV, which can be used to diagnose aquatic animal diseases, particularly where expensive diagnostic instruments are not available.
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Affiliation(s)
- Y Ma
- Wuxi Fisheries College, Nanjing Agricultural University, Nanjing, China
| | - T Dai
- Wuxi Fisheries College, Nanjing Agricultural University, Nanjing, China
| | - A Serwadda
- Wuxi Fisheries College, Nanjing Agricultural University, Nanjing, China.,Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, China
| | - H Shen
- Wuxi Fisheries College, Nanjing Agricultural University, Nanjing, China. .,Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, China.
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Yuan Y, Fan D, Zhang Z, Yang J, Liu J, Chen J. Identification and RNA segment assignment of six structural proteins of Scylla serrata reovirus. Virus Genes 2016; 52:556-60. [PMID: 27023722 DOI: 10.1007/s11262-016-1319-9] [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: 02/03/2016] [Accepted: 03/11/2016] [Indexed: 10/22/2022]
Abstract
Scylla serrata reovirus (SsRV) is one of the most prevalent viral pathogens of the mud crab (S. serrata). The virus represents an unassigned novel genus in the Reoviridae family, and contains 12 double-stranded RNA genomic segments. Previous analysis of virion proteins concluded that SsRV contains at least eight structural proteins, ranging from 25 to 160 kDa. Here, tandem time-of-flight mass spectrometry and Western blotting were used to re-identify the structural proteins. The results indicate that proteins encoded by SsRV segments S1, S3, S6, S9, S11, and S12 are structural proteins.
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Affiliation(s)
- Yangyang Yuan
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai, People's Republic of China.,College of Biological and Environmental Sciences, Zhejiang Wanli University, No. 8, South Qianhu Road, Ningbo, 315100, Zhejiang Province, People's Republic of China
| | - Dongyang Fan
- College of Biological and Environmental Sciences, Zhejiang Wanli University, No. 8, South Qianhu Road, Ningbo, 315100, Zhejiang Province, People's Republic of China
| | - Zhao Zhang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, No. 8, South Qianhu Road, Ningbo, 315100, Zhejiang Province, People's Republic of China
| | - Jifang Yang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, No. 8, South Qianhu Road, Ningbo, 315100, Zhejiang Province, People's Republic of China
| | - Jingwen Liu
- Bioengineering College of Jimei University, Xiamen, People's Republic of China
| | - Jigang Chen
- College of Biological and Environmental Sciences, Zhejiang Wanli University, No. 8, South Qianhu Road, Ningbo, 315100, Zhejiang Province, People's Republic of China.
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Scylla serrata reovirus p35 protein expressed in Escherichia coli cells alters membrane permeability. Virus Genes 2015; 51:69-76. [PMID: 26104656 DOI: 10.1007/s11262-015-1218-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 06/08/2015] [Indexed: 10/23/2022]
Abstract
To promote viral entry, replication, release, and spread to neighboring cells, many cytolytic animal viruses encode proteins responsible for modification of host cell membrane permeability and for formation of ion channels in host cell membranes. Scylla serrata reovirus (SsRV) is a major pathogen that can severely damage mud crab (S. serrata) aquaculture. Protein p35, which is encoded by segment 10 of SsRV, contains two transmembrane domains. In this study, we found that SsRV p35 can induce membrane permeability changes when expressed in Escherichia coli. SsRV p35 expressed in bacterial cells existed as monomers under reducing conditions but formed homodimers and homotrimers under non-reducing conditions. These findings demonstrate that p35 may act as a viroporin; further studies are needed to elucidate the detailed structure-function relationships of this protein.
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Near-Full-Length Genome Sequence of a Novel Reovirus from the Chinese Mitten Crab, Eriocheir sinensis. GENOME ANNOUNCEMENTS 2015; 3:3/3/e00447-15. [PMID: 25999569 PMCID: PMC4440949 DOI: 10.1128/genomea.00447-15] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A novel Eriocheir sinensis reovirus (EsRV) was identified using deep-sequencing techniques in crabs afflicted with trembling disease (TD). Near-full-length genome sequences of 12 segments of EsRV were obtained. The genome of EsRV will facilitate further studies on the causative agent of TD.
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