1
|
Harrison RL, Rowley DL. The Parapoynx stagnalis Nucleopolyhedrovirus (PastNPV), a Divergent Member of the Alphabaculovirus Group I Clade, Encodes a Homolog of Ran GTPase. Viruses 2022; 14:v14102289. [PMID: 36298845 PMCID: PMC9610796 DOI: 10.3390/v14102289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/11/2022] [Accepted: 10/14/2022] [Indexed: 11/23/2022] Open
Abstract
We report the analysis of the genome of a novel Alphabaculovirus, Parapoynx stagnalis nucleopolyhedrovirus isolate 473 (PastNPV-473), from cadavers of the rice case bearer, Parapoynx stagnalis Zeller (Lepidoptera: Crambidae), collected in rice fields in Kerala, India. High-throughput sequencing of DNA from PastNPV occlusion bodies and assembly of the data yielded a circular genome-length contig of 114,833 bp with 126 annotated opening reading frames (ORFs) and six homologous regions (hrs). Phylogenetic inference based on baculovirus core gene amino acid sequence alignments indicated that PastNPV is a member of the group I clade of viruses in genus Alphabaculovirus, but different phylogenetic methods yielded different results with respect to the placement of PastNPV and four similarly divergent alphabaculoviruses in the group I clade. Branch lengths and Kimura-2-parameter pairwise nucleotide distances indicated that PastNPV-473 cannot be classified in any of the currently listed species in genus Alphabaculovirus. A unique feature of the PastNPV genome was the presence of an ORF encoding a homolog of Ran GTPase, a regulator of nucleocytoplasmic trafficking. PastNPV appears to have acquired a homolog of Ran relatively recently from a lepidopteran host via horizontal gene transfer.
Collapse
|
2
|
El-Salamouny S, Wennmann JT, Kleespies RG, Richert-Pöggeler KR, Mansour A, Awad M, Agamy E, Salama R, Jehle JA. Identification of a new nucleopolyhedrovirus isolated from the olive leaf moth, Palpita vitrealis, from two locations in Egypt. J Invertebr Pathol 2022; 192:107770. [PMID: 35597278 DOI: 10.1016/j.jip.2022.107770] [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: 12/16/2021] [Revised: 05/11/2022] [Accepted: 05/15/2022] [Indexed: 11/25/2022]
Abstract
The olive leaf moth (jasmine moth), Palpita vitrealis (Lepidoptera: Crambidae), is an important insect pest of olives in several Mediterranean countries. A new alphabaculovirus was isolated from diseased larvae of P. vitrealis in Egypt, first in Giza in spring 2005 and again in Marsa Matrouh in 2019.The larvae exhibited typical symptoms of a baculovirus infection. Light and scanning electron microscopy studies revealed polyhedral occlusion bodies. Transmission electron microscopy of ultrathin sections of purified OBs revealed virions with multiple embedded nucleocapsids. The identity of the two virus isolates was confirmed by sequencing the partial polyhedrin and lef-8 genes, and sequence comparison suggested a relationship to group I alphabaculoviruses. Therefore, this virus was termed Palpita vitrealis nucleopolyhedrovirus (PaviNPV). Whole genome sequencing of the PaviNPV isolate from Giza (Gz05) revealed a genome of 117,533 bp, 131 open reading frames (ORFs) and three homologous repeat (hr) regions. Phylogenetic reconstruction and genetic distance analyses using 38 core genes indicated that PaviNPV is most closely related to Thysanoplusia orichalcea nucleopolyhedrovirus (ThorNPV) but should be considered to belong to a novel species within the genus Alphabaculovirus. In bioassays, PaviNPV was highly virulent against second-instar larvae of P. vitrealis. The study reports a novel baculovirus that might have potential as a biological control agent of the olive leaf moth.
Collapse
Affiliation(s)
- Said El-Salamouny
- Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt; Julius Kühn Institute (JKI) - Federal Research Centre for Cultivated Plants, Institute for Biological Control, Heinrichstr. 243, 64287 Darmstadt, Germany
| | - Jörg T Wennmann
- Julius Kühn Institute (JKI) - Federal Research Centre for Cultivated Plants, Institute for Biological Control, Heinrichstr. 243, 64287 Darmstadt, Germany
| | - Regina G Kleespies
- Julius Kühn Institute (JKI) - Federal Research Centre for Cultivated Plants, Institute for Biological Control, Heinrichstr. 243, 64287 Darmstadt, Germany
| | - Katja R Richert-Pöggeler
- Julius Kühn Institute (JKI) - Federal Research Centre for Cultivated Plants, Institute for Epidemiology and Pathogen Diagnostics, Messeweg 11-12, 38104 Braunschweig, Germany
| | - Amany Mansour
- Department of Plant Protection Desert Research Center, Ministry of Agriculture, Matariya, 11753 Cairo, Egypt
| | - Mona Awad
- Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt
| | - Essam Agamy
- Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt
| | - Ramadan Salama
- Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt
| | - Johannes A Jehle
- Julius Kühn Institute (JKI) - Federal Research Centre for Cultivated Plants, Institute for Biological Control, Heinrichstr. 243, 64287 Darmstadt, Germany.
| |
Collapse
|
3
|
Jakubowicz V, Taibo CB, Sciocco-Cap A, Arneodo JD. Biological and molecular characterization of Rachiplusia nu single nucleopolyhedrovirus, a promising biocontrol agent against the South American soybean pest Rachiplusia nu. J Invertebr Pathol 2019; 166:107211. [DOI: 10.1016/j.jip.2019.107211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/14/2019] [Accepted: 06/15/2019] [Indexed: 11/28/2022]
|
4
|
Tachibana A, Hamajima R, Tomizaki M, Kondo T, Nanba Y, Kobayashi M, Yamada H, Ikeda M. HCF-1 encoded by baculovirus AcMNPV is required for productive nucleopolyhedrovirus infection of non-permissive Tn368 cells. Sci Rep 2017. [PMID: 28630398 PMCID: PMC5476645 DOI: 10.1038/s41598-017-03710-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Baculovirus Autographa californica multiple nucleopolyhedrovirus (AcMNPV) replicates in both Spodoptera frugiperda Sf21 and Trichoplusia ni Tn368 cells, whereas AcMNPV defective in hcf-1 (host cell-factor 1) gene productively infects only Sf21 cells, indicating that HCF-1 is indispensable for the AcMNPV productive infection of Tn368 cells. Here, we demonstrated that HCF-1 protein transiently expressed in Tn368 cells promotes the DNA synthesis of Hyphantria cunea MNPV (HycuMNPV), Orygia pseudotsugata MNPV and Bombyx mori NPV, which are normally unable to replicate in Tn368 cells. We also demonstrated that a recombinant HycuMNPV harboring the hcf-1 gene successfully replicates in Tn368 cells, generating substantial yields of progeny viruses and polyhedra. These results indicate that HCF-1 encoded by AcMNPV is an essential viral factor for productive NPV infection of Tn368 cells. Taken together with the previous findings on HRF-1 (host range factor 1), the present results provide strong evidence that viral genes acquired through horizontal gene transfer play an important role in baculovirus evolution, serving to expand the host range of baculoviruses.
Collapse
Affiliation(s)
- Ami Tachibana
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Rina Hamajima
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Moe Tomizaki
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Takuya Kondo
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Yoshie Nanba
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Michihiro Kobayashi
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Hayato Yamada
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Motoko Ikeda
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan.
| |
Collapse
|
5
|
Kikhno I. Identification of a conserved non-protein-coding genomic element that plays an essential role in Alphabaculovirus pathogenesis. PLoS One 2014; 9:e95322. [PMID: 24740153 PMCID: PMC3989284 DOI: 10.1371/journal.pone.0095322] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Accepted: 03/26/2014] [Indexed: 12/13/2022] Open
Abstract
Highly homologous sequences 154-157 bp in length grouped under the name of "conserved non-protein-coding element" (CNE) were revealed in all of the sequenced genomes of baculoviruses belonging to the genus Alphabaculovirus. A CNE alignment led to the detection of a set of highly conserved nucleotide clusters that occupy strictly conserved positions in the CNE sequence. The significant length of the CNE and conservation of both its length and cluster architecture were identified as a combination of characteristics that make this CNE different from known viral non-coding functional sequences. The essential role of the CNE in the Alphabaculovirus life cycle was demonstrated through the use of a CNE-knockout Autographa californica multiple nucleopolyhedrovirus (AcMNPV) bacmid. It was shown that the essential function of the CNE was not mediated by the presumed expression activities of the protein- and non-protein-coding genes that overlap the AcMNPV CNE. On the basis of the presented data, the AcMNPV CNE was categorized as a complex-structured, polyfunctional genomic element involved in an essential DNA transaction that is associated with an undefined function of the baculovirus genome.
Collapse
Affiliation(s)
- Irina Kikhno
- Institute of Molecular Biology & Genetics of Ukrainian Academy of Science, Kiev, Ukraine
- * E-mail:
| |
Collapse
|