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Choi MG, Hong SJ, Kim SM, Kim KH. A new genotype of decapod hepanhamaparvovirus 1 (DHPV) from cultured Penaeus vannamei in South Korea. DISEASES OF AQUATIC ORGANISMS 2023; 156:53-57. [PMID: 37970846 DOI: 10.3354/dao03761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Decapod hepanhamaparvovirus 1 (DHPV), also known as hepatopancreatic parvovirus (HPV), has caused death in larvae or stunted growth in juveniles of cultured shrimp. To date, 4 genotypes (genotype I, II, III, and IV) have been reported from various shrimp species and various geographical regions. In the present study, we isolated 2 types of DHPV (GHPV-Goseong and DHPV-Geoje) from cultured Penaeus vannamei in Korea. Based on the capsid protein (VP) amino acid sequences, DHPV-Goseong was highly identical to previously reported DHPV genotype IV in Taiwan and Korea. Different from DHPV-Goseong, DHPV-Geoje showed approximately 63% similarity with DHPV genotype I, II, III and 84% similarity with DHPV genotype IV, suggesting an independent new genotype of DHPV (genotype V). Further research is needed to elucidate the origin and biological meanings of the present new genotype.
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Affiliation(s)
- Myoung Gwang Choi
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, South Korea
| | - Soon Joo Hong
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, South Korea
| | - Seong Mok Kim
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, South Korea
| | - Ki Hong Kim
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, South Korea
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Jaroenlak P, Sanguanrut P, Williams BAP, Stentiford GD, Flegel TW, Sritunyalucksana K, Itsathitphaisarn O. A Nested PCR Assay to Avoid False Positive Detection of the Microsporidian Enterocytozoon hepatopenaei (EHP) in Environmental Samples in Shrimp Farms. PLoS One 2016; 11:e0166320. [PMID: 27832178 PMCID: PMC5104377 DOI: 10.1371/journal.pone.0166320] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 10/26/2016] [Indexed: 01/29/2023] Open
Abstract
Hepatopancreatic microsporidiosis (HPM) caused by Enterocytozoon hepatopenaei (EHP) is an important disease of cultivated shrimp. Heavy infections may lead to retarded growth and unprofitable harvests. Existing PCR detection methods target the EHP small subunit ribosomal RNA (SSU rRNA) gene (SSU-PCR). However, we discovered that they can give false positive test results due to cross reactivity of the SSU-PCR primers with DNA from closely related microsporidia that infect other aquatic organisms. This is problematic for investigating and monitoring EHP infection pathways. To overcome this problem, a sensitive and specific nested PCR method was developed for detection of the spore wall protein (SWP) gene of EHP (SWP-PCR). The new SWP-PCR method did not produce false positive results from closely related microsporidia. The first PCR step of the SWP-PCR method was 100 times (104 plasmid copies per reaction vial) more sensitive than that of the existing SSU-PCR method (106 copies) but sensitivity was equal for both in the nested step (10 copies). Since the hepatopancreas of cultivated shrimp is not currently known to be infected with microsporidia other than EHP, the SSU-PCR methods are still valid for analyzing hepatopancreatic samples despite the lower sensitivity than the SWP-PCR method. However, due to its greater specificity and sensitivity, we recommend that the SWP-PCR method be used to screen for EHP in feces, feed and environmental samples for potential EHP carriers.
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Affiliation(s)
- Pattana Jaroenlak
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Piyachat Sanguanrut
- Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Bangkok, Thailand
- Shrimp Pathogen Interaction Laboratory (SPI), National Center for Genetic Engineering and Biotechnology (BIOTEC), Bangkok, Thailand
| | - Bryony A. P. Williams
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Grant D. Stentiford
- European Community Reference Laboratory for Crustacean Diseases, Center for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth, Dorset, United Kingdom
| | - Timothy W. Flegel
- Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Bangkok, Thailand
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Kallaya Sritunyalucksana
- Shrimp Pathogen Interaction Laboratory (SPI), National Center for Genetic Engineering and Biotechnology (BIOTEC), Bangkok, Thailand
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Ornchuma Itsathitphaisarn
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Bangkok, Thailand
- * E-mail:
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Dhar AK, Robles-Sikisaka R, Saksmerprome V, Lakshman DK. Biology, genome organization, and evolution of parvoviruses in marine shrimp. Adv Virus Res 2014; 89:85-139. [PMID: 24751195 DOI: 10.1016/b978-0-12-800172-1.00003-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
As shrimp aquaculture has evolved from a subsistent farming activity to an economically important global industry, viral diseases have also become a serious threat to the sustainable growth and productivity of this industry. Parvoviruses represent an economically important group of viruses that has greatly affected shrimp aquaculture. In the early 1980s, an outbreak of a shrimp parvovirus, infectious hypodermal and hematopoietic necrosis virus (IHHNV), led to the collapse of penaeid shrimp farming in the Americas. Since then, considerable progress has been made in characterizing the parvoviruses of shrimp and developing diagnostic methods aimed to preventing the spread of diseases caused by these viruses. To date, four parvoviruses are known that infect shrimp; these include IHHNV, hepatopancreatic parvovirus (HPV), spawner-isolated mortality virus (SMV), and lymphoid organ parvo-like virus. Due to the economic repercussions that IHHNV and HPV outbreaks have caused to shrimp farming over the years, studies have been focused mostly on these two pathogens, while information on SMV and LPV remains limited. IHHNV was the first shrimp virus to be sequenced and the first for which highly sensitive diagnostic methods were developed. IHHNV-resistant lines of shrimp were also developed to mitigate the losses caused by this virus. While the losses due to IHHNV have been largely contained in recent years, reports of HPV-induced mortalities in larval stages in hatchery and losses due to reduced growth have increased. This review presents a comprehensive account of the history and current knowledge on the biology, diagnostics methods, genomic features, mechanisms of evolution, and management strategies of shrimp parvoviruses. We also highlighted areas where research efforts should be focused in order to gain further insight on the mechanisms of parvoviral pathogenicity in shrimp that will help to prevent future losses caused by these viruses.
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Affiliation(s)
| | | | - Vanvimon Saksmerprome
- Centex Shrimp, Faculty of Science, Mahidol University, Bangkok, Thailand; National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathum Thani, Thailand
| | - Dilip K Lakshman
- USDA-ARS, Floral & Nursery Plants Research Unit, Beltsville, Maryland, USA
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Liu T, Yang B, Song X, Wang X, Yuan Y, Liu L, Huang J. Detection and quantification of hepatopancreatic parvovirus in penaeid shrimp by real-time PCR assay. J Invertebr Pathol 2013; 114:309-12. [DOI: 10.1016/j.jip.2013.09.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 09/14/2013] [Accepted: 09/20/2013] [Indexed: 10/26/2022]
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Safeena MP, Rai P, Karunasagar I. Molecular Biology and Epidemiology of Hepatopancreatic parvovirus of Penaeid Shrimp. INDIAN JOURNAL OF VIROLOGY : AN OFFICIAL ORGAN OF INDIAN VIROLOGICAL SOCIETY 2012; 23:191-202. [PMID: 23997443 PMCID: PMC3550755 DOI: 10.1007/s13337-012-0080-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 06/26/2012] [Indexed: 12/29/2022]
Abstract
Hepatopancreatic parvovirus (HPV) is one of the major shrimp parvovirus which is known to cause slow growth in penaeid shrimps. HPV has been found in wild and cultured penaeid shrimps throughout the world and there is high genetic variation among the different geographic isolates/host species. Given its high prevalence, wide distribution and ability to cause considerable economic loss in shrimp aquaculture industry, HPV deserves more attention than it has received. Till date, a total of four complete genome sequences of HPV have been reported in addition to a large number of partial sequences. HPV infection is seldom observed alone in epizootics and has occurred in multiple infections with other more pathogenic viruses and in most cases, heavy infections result in no visible inflammatory response. A great deal of information has accumulated in recent years on the clinical signs, geographical distribution, transmission and genetic diversity of HPV infection in shrimp aquaculture. However, the mechanism by which HPV enters the shrimp tissues and pathogenesis of virus is still unknown. To date, no effective prophylactic measures are available to reduce the infection in shrimps. To control and prevent HPV infection, considerable research efforts are on. This review provides information on current knowledge on HPV infection in penaeid shrimp aquaculture.
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Affiliation(s)
- Muhammed P. Safeena
- Department of Fishery Microbiology, College of Fisheries, Karnataka Veterinary, Animal and Fisheries Sciences University, Mangalore, 575 002 India
| | - Praveen Rai
- Department of Fishery Microbiology, College of Fisheries, Karnataka Veterinary, Animal and Fisheries Sciences University, Mangalore, 575 002 India
| | - Indrani Karunasagar
- Department of Fishery Microbiology, College of Fisheries, Karnataka Veterinary, Animal and Fisheries Sciences University, Mangalore, 575 002 India
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Jeeva S, Kang SW, Lee YS, Jang IK, Seo HC, Choi TJ. Complete nucleotide sequence analysis of a Korean strain of hepatopancreatic parvovirus (HPV) from Fenneropenaeus chinensis. Virus Genes 2011; 44:89-97. [PMID: 21948006 DOI: 10.1007/s11262-011-0675-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Accepted: 09/12/2011] [Indexed: 10/17/2022]
Abstract
Hepatopancreatic parvovirus (HPV) of shrimp is distributed worldwide and the entire genome of Thailand and Indian strains (PmDNV) and one Australian strain (PmergDNV) have now been reported. The complete nucleotide sequence of a HPV strain isolated from the fleshy prawn Fenneropenaeus chinensis in Korea (FcDNV) was determined and compared to previously reported sequences. The entire genome of FcDNV contains 6,336 nucleotides, with 40% G+C content, which is the biggest of the known HPV strains. The HPV genome has three open reading frames (ORFs) with a slight overlap between the first and second ORFs. The three ORFs encode the NS2 and NS1 proteins and VP that consist of 425, 578, and 820 amino acids, respectively. Among the three proteins, the NS1 protein shows the highest sequence similarity to the NS1 protein of other known HPV strains, followed by the NS2 protein and the VP protein. Phylogenetic analyses showed that HPV can be grouped into three genotypes, as previously reported, and FcDNV can be grouped as genotype I, with HPV strains isolated in Madagascar and Tanzania. The nucleotide sequences of the noncoding regions at the 5'- and 3'-ends of the plus-strand genome showed a Y-shaped hairpin structure and simple hairpin structure, respectively.
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Affiliation(s)
- Subbiah Jeeva
- Department of Microbiology, Pukyong National University, 599-1, Daeyeon 3-Dong, Nam-Gu, Busan 608-737, Republic of Korea
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Yan DC, Tang KFJ, Lightner DV. A real-time PCR for the detection of hepatopancreatic parvovirus (HPV) of penaeid shrimp. JOURNAL OF FISH DISEASES 2010; 33:507-511. [PMID: 20367743 DOI: 10.1111/j.1365-2761.2010.01149.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Hepatopancreatic parvovirus (HPV) causes a common shrimp disease that occurs in many shrimp farming regions, especially in the Indo Pacific, and infects most of the cultured penaeid species. There are seven geographic HPV isolates known, so a method to detect different HPV types is needed. We developed a sensitive and generic real-time PCR assay for the detection of HPV. A pair of primers and TaqMan probe based on an HPV sequence obtained from samples of Fenneropenaeus chinensis from Korea were selected, and they were used to amplify a 92 bp DNA fragment. This real-time PCR was found to be specific to HPV and did not react with other shrimp viruses. A plasmid (pHPV-2) containing the target HPV sequence was constructed and used for determination of the sensitivity of this assay. The assay could detect a single copy of plasmid DNA, and it was used successfully in finding HPV in shrimp samples from the China-Yellow Sea region, Taiwan, Korea, Thailand, Madagascar, New Caledonia and Tanzania.
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Affiliation(s)
- D C Yan
- College of Life Science, Ludong University, Yantai, China.
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Safeena MP, Tyagi A, Rai P, Karunasagar I, Karunasagar I. Complete nucleic acid sequence of Penaeus monodon densovirus (PmDNV) from India. Virus Res 2010; 150:1-11. [PMID: 20156496 DOI: 10.1016/j.virusres.2010.02.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2009] [Revised: 02/08/2010] [Accepted: 02/08/2010] [Indexed: 12/11/2022]
Abstract
The complete nucleic acid sequence of the Penaeus monodon densovirus (PmDNV) from India was characterized. Analysis of the whole genome, consisting of 6310 bp revealed the presence of three open reading frames (ORFs), comprising 1281 bp, 1734 bp and 2460 bp, respectively. The complete genome and amino acid sequences of three proteins viz., NS1, NS2 and VP were compared with PmDNV from Thailand, PmergDNV from Australia and other partial sequences in GenBank, respectively. Highest nucleotide similarity was observed with the Thai strain (88%), while 33, 32 and 91 amino acid substitutions were observed in the NS2, NS1 and VP, respectively. Phylogenetic analysis of shrimp, insect and vertebrate parvovirus sequences revealed that the Indian PmDNV is more closely related to Thai isolates than all other parvoviruses reported so far.
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Affiliation(s)
- Muhammed P Safeena
- Department of Fishery Microbiology, Karnataka Veterinary, Animal and Fisheries Sciences, University, College of Fisheries, Mangalore-575 002, India
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Shrimp hepatopancreatic parvovirus detection by combining loop-mediated isothermal amplification with a lateral flow dipstick. J Virol Methods 2008; 154:56-60. [DOI: 10.1016/j.jviromet.2008.09.003] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2008] [Revised: 08/28/2008] [Accepted: 09/04/2008] [Indexed: 11/23/2022]
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Multiplex RT-PCR assay for simultaneous detection of six viruses of penaeid shrimp. Mol Cell Probes 2008; 22:177-83. [PMID: 18406570 DOI: 10.1016/j.mcp.2007.12.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2007] [Revised: 12/18/2007] [Accepted: 12/31/2007] [Indexed: 11/21/2022]
Abstract
In the present study, multiplex reverse transcription-polymerase chain reaction (mRT-PCR) was developed for simultaneously detection of six major shrimp viruses including yellow-head virus (YHV), white spot syndrome virus (WSSV), Taura syndrome virus (TSV), hepatopancreatic parvovirus (HPV), infectious hypodermal and hematopoietic necrosis virus (IHHNV) and monodon baculovirus (MBV). The six primer sets could amplify viral nucleic acids resulting in PCR products with different sizes. They were highly specific and did not cross-hybridize with other viral or shrimp nucleic acids. The sensitivity of the multiplex RT-PCR was 0.15pg for IHHNV, 0.15pg for TSV, 1.00pg for HPV, 1.5pg for MBV, 5.00pg for WSSV and 10.00pg for YHV. In the field application, 42 samples including whole tissue of post-larvae and hepatopancreas of Penaeus monodon collected from ponds in the central and southern parts of Thailand during 2002-2005 were examined by multiplex RT-PCR. The results revealed that a single infection was dominant and WSSV was the highest prevalence at that time. Dual infection was found in one sample. This developed multiplex RT-PCR will be useful for simultaneous detection of six major viruses of penaeid shrimp and benefit to shrimp cultured industry.
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La Fauce KA, Elliman J, Owens L. Molecular characterisation of hepatopancreatic parvovirus (PmergDNV) from Australian Penaeus merguiensis. Virology 2007; 362:397-403. [PMID: 17275056 DOI: 10.1016/j.virol.2006.11.033] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2006] [Accepted: 11/29/2006] [Indexed: 12/15/2022]
Abstract
Hepatopancreatic parvovirus infection is associated with reduced growth rates of prawns during the juvenile stages and overt mortalities. Hepatopancreatic parvovirus was purified from Penaeus merguiensis from northern Queensland and a partial consensus sequence of 5.9 kb was obtained. Nucleotide comparisons revealed that the Australian isolate of HPV has a nucleotide similarity (87%) closer to HPVchin and the full sequence of HPV Penaeus monodon (PmDNV) (6321 bp) than to HPVsemi (83%). Three putative open reading frames were identified. The first open reading frame encoded a nonstructural protein (NS2) and shared an amino acid similarity of 86% with PmDNV. The second ORF overlapped the first open reading frame and shared 93% and 26% amino acid similarity with PmDNV and PstDNV, respectively, and encoded NS1. The third ORF encoded the viral structural protein and shared an amino acid similarity of 73% with the capsid protein of PmDNV and HPVchin. The phylogeny suggests that the Australian HPV isolate is closely related to the Korean HPVchin isolate than to the Indian HPVsemi and Thai PmDNV isolates. HPV strains may be following the phylogenetic relationship of penaeid prawn hosts rather than their geography.
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Affiliation(s)
- Kathy A La Fauce
- Microbiology and Immunology, James Cook University, Townsville, QLD, 4811, Australia.
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La Fauce KA, Layton R, Owens L. TaqMan real-time PCR for detection of hepatopancreatic parvovirus from Australia. J Virol Methods 2006; 140:10-6. [PMID: 17118464 DOI: 10.1016/j.jviromet.2006.10.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2006] [Revised: 09/28/2006] [Accepted: 10/19/2006] [Indexed: 10/23/2022]
Abstract
Hepatopancreatic parvovirus is an emerging disease in crustacean aquaculture. Consequently, methods of detection are needed that enable the sensitive detection and confirmation of the virus better than currently used methods such as histology and conventional polymerase chain reaction (PCR). A TaqMan based real-time PCR assay was developed for the detection of the Australian isolate of hepatopancreatic parvovirus which is only 85% similar to its nearest known relative. The TaqMan assay was developed within the capsid protein region of the genome and is optimised to detect as little as 10 copies of the targeted sequence per PCR vial. The hepatopancreatic parvovirus primers and probe were HPV140F 5'-CTA CTC CAA TGG AAA CTT CTG AGC-3', HPV140R 5'-GTG GCG TTG GAA GGC ACT TC-3' and HPV140probe 5'-FAM TAC CGC CGC ACC GCA GCA GC TAMRA-3', respectively. The assay was specific for the hepatopancreatic parvovirus strain from Australian Penaeus merguiensis as it did not detect related crustacean and canine parvoviruses from Australia. In addition, the very low homology of the target sequence with published sequences from the Thai and Korean strains of hepatopancreatic parvovirus and other prawn viruses such as WSSV, suggested this assay would be specific for the Australian hepatopancreatic parvovirus isolate. Furthermore, it detected hepatopancreatic parvovirus in 22/22 wild-caught P. merguiensis clinical samples and 473/545 (87%) farmed P. merguiensis. This assay has the potential to be used for diagnostic purposes and in robotic applications, particularly for the detection and quantitation of low-grade infections.
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Affiliation(s)
- Kathy A La Fauce
- School of Veterinary and Biomedical Sciences, Solander Drive, James Cook University, Townsville, Qld 4811, Australia.
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Sukhumsirichart W, Attasart P, Boonsaeng V, Panyim S. Complete nucleotide sequence and genomic organization of hepatopancreatic parvovirus (HPV) of Penaeus monodon. Virology 2005; 346:266-77. [PMID: 16356523 DOI: 10.1016/j.virol.2005.06.052] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2005] [Revised: 04/28/2005] [Accepted: 06/17/2005] [Indexed: 12/30/2022]
Abstract
We have determined the genome of hepatopancreatic parvovirus (HPV), a minus, single-stranded DNA virus isolated from infected Penaeus monodon in Thailand. Its genome consisted of 6321 nucleotides, representing three large open reading frames (ORFs) and two non-coding termini. The left (ORF1), mid (ORF2), and right (ORF3) ORFs on the complementary (plus) strand may code for 428, 579, and 818 amino acids, equivalent to 50, 68, and 92 kDa, respectively. The 5' and 3' ends of viral genome contained hairpin-like structure length of approximately 222 and 215 bp, respectively. No inverted terminal repeat (ITR) was detected. The ORF2 contained conserved replication initiator motif, NTP-binding and helicase domain similar to NS-1 of other parvoviruses. Therefore, it most likely encoded the major nonstructural protein (NS-1). The ORF1 encoded putative nonstructural protein-2 (NS-2) with unknown function. The ORF3 of the HPV genome encoded a capsid protein (VP) of approximately 92 kDa. This may be later cleaved after arginine residue to produce a 57-kDa structural protein. A phylogenetic tree based on conserved amino acid sequences (119 aa) revealed that it is closely related to Brevidensoviruses, which are shrimp parvovirus (IHHNV) and mosquito densoviruses (AaeDNV and AalDNV). However, the overall genomic organization and genome size of HPV were different from these parvoviruses, for instance, the non-overlapping of NS1 and NS2, the larger VP gene, and the bigger genome size. This suggested that this HPV virus is a new type in Parvoviridae family. We therefore propose to rename this virus P. monodon densovirus (PmDNV).
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Affiliation(s)
- Wasana Sukhumsirichart
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Sukhumvit 23, Bangkok 10110, Thailand.
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Roekring S, Nielsen L, Owens L, Pattanakitsakul SN, Malasit P, Flegel TW. Comparison of penaeid shrimp and insect parvoviruses suggests that viral transfers may occur between two distantly related arthropod groups. Virus Res 2002; 87:79-87. [PMID: 12135792 DOI: 10.1016/s0168-1702(02)00084-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The DNA and putative amino acid sequences of representative insect and shrimp parvoviruses (subfamily Densovirinae) were analyzed using computer programs. Shrimp viruses included hepatopancreatic parvovirus (HPV) of Penaeus monodon (HPVmon) and P. chinensis (HPVchin), spawner-isolated mortality virus from P. monodon (SMVmon) and infectious hypodermal and hematopoietic necrosis virus (IHHNV) from P. vannamei. Insect viruses included Aedes aegypti densovirus (AaeDNV), Aedes albopictus densovirus (AalDNV), Junonia coenia densovirus (JcDNV), Galleria mellonella densovirus (GmDNV), Bombyx mori densovirus 5 (BmDNV), Diatraea saccharalis densovirus (DsDNV) and Periplaneta fuliginosa densovirus (PfDNV). Virion size for all these viruses ranged between 18 and 30 nm diameter and ssDNA genome length was between 4 and 6 kb. Using BLAST or Clustal W with the sequence fragments available, no significant DNA homology was found except for 77% DNA identity between HPVmon and HPVchin. However, phylogenetic trees constructed by comparing DNA genome sequences for putative viral polypeptides, capsid proteins and nonstructural proteins placed the parvoviruses into two Clades: Clade 1 with SMVmon, PfDNV, DsDNV, GmDNV, JcDNV, and BmDNV; and Clade 2 with HPVmon, HPVchin, IHHNV, AalDNV and AaeDNV. The four shrimp parvoviruses fell into two different clades that grouped with different insect parvoviruses.
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Affiliation(s)
- Songsak Roekring
- Department of Biotechnology, Faculty of Science, Centex Shrimp, Chalerm Prakiat Bldg., Mahidol University, Bangkok, Thailand
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