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Comont G, Faure C, Candresse T, Laurens M, Valière S, Lluch J, Lefebvre M, Gambier S, Jolivet J, Corio-Costet MF, Marais A. Characterization of the RNA Mycovirome Associated with Grapevine Fungal Pathogens: Analysis of Mycovirus Distribution and Their Genetic Variability within a Collection of Botryosphaeriaceae Isolates. Viruses 2024; 16:392. [PMID: 38543758 PMCID: PMC10975779 DOI: 10.3390/v16030392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 05/23/2024] Open
Abstract
Botryosphaeriaceae are fungi involved in the decay of various woody species, including the grapevine, leading to significant production losses. This fungal family is largely ubiquitous, and seven species of Botryosphaeriaceae have been identified in French vineyards, with variable levels of aggressiveness, both in vitro and in planta. Mycoviruses can impact the life traits of their fungal hosts, including aggressiveness, and are one of the factors influencing fungal pathogenicity. In this study, the RNA mycovirome of fifteen Botryosphaeriaceae isolates was characterized through the high-throughput sequencing of double-stranded RNA preparations from the respective samples. Eight mycoviruses were detected, including three potential novel species in the Narnaviridae family, as well as in the proposed Mycobunyaviridae and Fusagraviridae families. A large collection of Botryosphaeriaceae isolates was screened using RT-PCR assays specific for 20 Botryosphaeriaceae-infecting mycoviruses. Among the mycoviruses detected, some appeared to be specialists within a single host species, while others infected isolates belonging to multiple Botryosphaeriaceae species. This screening allowed us to conclude that one-third of the Botryosphaeriaceae isolates were infected by at least one mycovirus, and a significant proportion of isolates (43.5%) were found to be coinfected by several viruses, with very complex RNA mycoviromes for some N. parvum isolates.
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Affiliation(s)
- Gwenaëlle Comont
- UMR Santé et Agroécologie du Vignoble (1065), ISVV, Labex Cote, Plant Health Department, INRAE, 33140 Villenave d’Ornon, France; (G.C.); (M.L.); (S.G.); (J.J.)
| | - Chantal Faure
- UMR BFP, INRAE, University of Bordeaux, 33140 Villenave d’Ornon, France; (C.F.); (T.C.); (M.L.)
| | - Thierry Candresse
- UMR BFP, INRAE, University of Bordeaux, 33140 Villenave d’Ornon, France; (C.F.); (T.C.); (M.L.)
| | - Marie Laurens
- UMR Santé et Agroécologie du Vignoble (1065), ISVV, Labex Cote, Plant Health Department, INRAE, 33140 Villenave d’Ornon, France; (G.C.); (M.L.); (S.G.); (J.J.)
| | - Sophie Valière
- INRAE, US 1426, GeT-PlaGe, GenoToul, 31320 Castanet-Tolosan, France; (S.V.); (J.L.)
| | - Jérôme Lluch
- INRAE, US 1426, GeT-PlaGe, GenoToul, 31320 Castanet-Tolosan, France; (S.V.); (J.L.)
| | - Marie Lefebvre
- UMR BFP, INRAE, University of Bordeaux, 33140 Villenave d’Ornon, France; (C.F.); (T.C.); (M.L.)
| | - Sébastien Gambier
- UMR Santé et Agroécologie du Vignoble (1065), ISVV, Labex Cote, Plant Health Department, INRAE, 33140 Villenave d’Ornon, France; (G.C.); (M.L.); (S.G.); (J.J.)
| | - Jérôme Jolivet
- UMR Santé et Agroécologie du Vignoble (1065), ISVV, Labex Cote, Plant Health Department, INRAE, 33140 Villenave d’Ornon, France; (G.C.); (M.L.); (S.G.); (J.J.)
| | - Marie-France Corio-Costet
- UMR Santé et Agroécologie du Vignoble (1065), ISVV, Labex Cote, Plant Health Department, INRAE, 33140 Villenave d’Ornon, France; (G.C.); (M.L.); (S.G.); (J.J.)
| | - Armelle Marais
- UMR BFP, INRAE, University of Bordeaux, 33140 Villenave d’Ornon, France; (C.F.); (T.C.); (M.L.)
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Sun A, Zhao L, Sun Y, Chen Y, Li C, Dong W, Yang G. Horizontal and Vertical Transmission of a Mycovirus Closely Related to the Partitivirus RhsV717 That Confers Hypovirulence in Rhizoctonia solani. Viruses 2023; 15:2088. [PMID: 37896865 PMCID: PMC10611285 DOI: 10.3390/v15102088] [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: 07/31/2023] [Revised: 09/30/2023] [Accepted: 10/03/2023] [Indexed: 10/29/2023] Open
Abstract
Rhizoctonia solani virus717 (RhsV717) was isolated from the Rhizoctonia solani (R. solani) AG-2 strain Rhs717. This study isolated a virus designated as Rhizoctonia solani partitivirus BS-5 (RsPV-BS5) from the R. solani AG-3 strain BS-5, the causal agent of tobacco target spot disease. The virus was identified as a strain of RhsV717. Transmission electron microscopy (TEM) images showed that RsPV-BS5 had virus particles with a diameter of approximately 40 nm. Importantly, it can be horizontally transmitted through hyphal anastomosis and vertically transmitted via sexual basidiospores. Furthermore, this study demonstrated that RsPV-BS5 infection significantly impedes mycelial growth and induces hypovirulence in tobacco leaves. Thus, RsPV-BS5 presents a promising avenue for biocontrolling tobacco target spot disease. Transcriptome analysis unveiled differential expression of four genes related to cell wall-degrading enzymes between two isogenic strains, 06-2-15V and 06-2-15. These findings shed light on the molecular mechanism through which RsPV-BS5 reduces host pathogenicity.
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Affiliation(s)
- Aili Sun
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China; (A.S.); (L.Z.); (Y.S.); (Y.C.); (C.L.)
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650000, China
| | - Lianjing Zhao
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China; (A.S.); (L.Z.); (Y.S.); (Y.C.); (C.L.)
| | - Yang Sun
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China; (A.S.); (L.Z.); (Y.S.); (Y.C.); (C.L.)
| | - Yingrui Chen
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China; (A.S.); (L.Z.); (Y.S.); (Y.C.); (C.L.)
| | - Chengyun Li
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China; (A.S.); (L.Z.); (Y.S.); (Y.C.); (C.L.)
| | - Wenhan Dong
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China; (A.S.); (L.Z.); (Y.S.); (Y.C.); (C.L.)
| | - Genhua Yang
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China; (A.S.); (L.Z.); (Y.S.); (Y.C.); (C.L.)
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Wen Y, Qu J, Zhang H, Yang Y, Huang R, Deng J, Zhang J, Xiao Y, Li J, Zhang M, Wang G, Zhai L. Identification and Characterization of a Novel Hypovirus from the Phytopathogenic Fungus Botryosphaeria dothidea. Viruses 2023; 15:2059. [PMID: 37896836 PMCID: PMC10611357 DOI: 10.3390/v15102059] [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: 08/22/2023] [Revised: 10/02/2023] [Accepted: 10/03/2023] [Indexed: 10/29/2023] Open
Abstract
Many mycoviruses have been accurately and successfully identified in plant pathogenic fungus Botryosphaeria dothidea. This study discovered three mycoviruses from a B. dothidea strain SXD111 using high-throughput sequencing technology. A novel hypovirus was tentatively named Botryosphaeria dothidea hypovirus 1 (BdHV1/SXD111). The other two were known viruses, which we named Botryosphaeria dothidea polymycovirus 1 strain SXD111 (BdPmV1/SXD111) and Botryosphaeria dothidea partitivirus 1 strain SXD111 (BdPV1/SXD111). The genome of BdHV1/SXD111 is 11,128 nucleotides long, excluding the poly (A) tail. A papain-like cysteine protease (Pro), a UDP-glucose/sterol glucosyltransferase (UGT), an RNA-dependent RNA polyprotein (RdRp), and a helicase (Hel) were detected in the polyprotein of BdHV1/SXD111. Phylogenetic analysis showed that BdHV1/SXD111 was clustered with betahypovirus and separated from members of the other genera in the family Hypoviridae. The BdPmV1/SXD111 genome comprised five dsRNA segments with 2396, 2232, 1967, 1131, and 1060 bp lengths. Additionally, BdPV1/SXD111 harbored three dsRNA segments with 1823, 1623, and 557 bp lengths. Furthermore, the smallest dsRNA was a novel satellite component of BdPV1/SXD111. BdHV1/SXD111 could be transmitted through conidia and hyphae contact, whereas it likely has no apparent impact on the morphologies and virulence of the host fungus. Thus, this study is the first report of a betahypovirus isolated from the fungus B. dothidea. Importantly, our results significantly enhance the diversity of the B. dothidea viruses.
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Affiliation(s)
- Yongqi Wen
- College of Life Science and Biotechnology, Yangtze Normal University, Chongqing 408100, China; (Y.W.); (J.Q.); (H.Z.); (Y.Y.); (R.H.); (J.D.); (J.Z.); (Y.X.); (J.L.); (M.Z.)
| | - Jinyue Qu
- College of Life Science and Biotechnology, Yangtze Normal University, Chongqing 408100, China; (Y.W.); (J.Q.); (H.Z.); (Y.Y.); (R.H.); (J.D.); (J.Z.); (Y.X.); (J.L.); (M.Z.)
| | - Honglin Zhang
- College of Life Science and Biotechnology, Yangtze Normal University, Chongqing 408100, China; (Y.W.); (J.Q.); (H.Z.); (Y.Y.); (R.H.); (J.D.); (J.Z.); (Y.X.); (J.L.); (M.Z.)
| | - Yi Yang
- College of Life Science and Biotechnology, Yangtze Normal University, Chongqing 408100, China; (Y.W.); (J.Q.); (H.Z.); (Y.Y.); (R.H.); (J.D.); (J.Z.); (Y.X.); (J.L.); (M.Z.)
| | - Rui Huang
- College of Life Science and Biotechnology, Yangtze Normal University, Chongqing 408100, China; (Y.W.); (J.Q.); (H.Z.); (Y.Y.); (R.H.); (J.D.); (J.Z.); (Y.X.); (J.L.); (M.Z.)
| | - Jili Deng
- College of Life Science and Biotechnology, Yangtze Normal University, Chongqing 408100, China; (Y.W.); (J.Q.); (H.Z.); (Y.Y.); (R.H.); (J.D.); (J.Z.); (Y.X.); (J.L.); (M.Z.)
| | - Jiayu Zhang
- College of Life Science and Biotechnology, Yangtze Normal University, Chongqing 408100, China; (Y.W.); (J.Q.); (H.Z.); (Y.Y.); (R.H.); (J.D.); (J.Z.); (Y.X.); (J.L.); (M.Z.)
| | - Yanping Xiao
- College of Life Science and Biotechnology, Yangtze Normal University, Chongqing 408100, China; (Y.W.); (J.Q.); (H.Z.); (Y.Y.); (R.H.); (J.D.); (J.Z.); (Y.X.); (J.L.); (M.Z.)
| | - Jiali Li
- College of Life Science and Biotechnology, Yangtze Normal University, Chongqing 408100, China; (Y.W.); (J.Q.); (H.Z.); (Y.Y.); (R.H.); (J.D.); (J.Z.); (Y.X.); (J.L.); (M.Z.)
| | - Meixin Zhang
- College of Life Science and Biotechnology, Yangtze Normal University, Chongqing 408100, China; (Y.W.); (J.Q.); (H.Z.); (Y.Y.); (R.H.); (J.D.); (J.Z.); (Y.X.); (J.L.); (M.Z.)
| | - Guoping Wang
- Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;
| | - Lifeng Zhai
- College of Life Science and Biotechnology, Yangtze Normal University, Chongqing 408100, China; (Y.W.); (J.Q.); (H.Z.); (Y.Y.); (R.H.); (J.D.); (J.Z.); (Y.X.); (J.L.); (M.Z.)
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Hough B, Steenkamp E, Wingfield B, Read D. Fungal Viruses Unveiled: A Comprehensive Review of Mycoviruses. Viruses 2023; 15:1202. [PMID: 37243288 PMCID: PMC10224137 DOI: 10.3390/v15051202] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/07/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
Mycoviruses (viruses of fungi) are ubiquitous throughout the fungal kingdom and are currently classified into 23 viral families and the genus botybirnavirus by the International Committee on the Taxonomy of Viruses (ICTV). The primary focus of mycoviral research has been on mycoviruses that infect plant pathogenic fungi, due to the ability of some to reduce the virulence of their host and thus act as potential biocontrol against these fungi. However, mycoviruses lack extracellular transmission mechanisms and rely on intercellular transmission through the hyphal anastomosis, which impedes successful transmission between different fungal strains. This review provides a comprehensive overview of mycoviruses, including their origins, host range, taxonomic classification into families, effects on their fungal counterparts, and the techniques employed in their discovery. The application of mycoviruses as biocontrol agents of plant pathogenic fungi is also discussed.
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Affiliation(s)
| | | | - Brenda Wingfield
- Forestry & Agricultural Biotechnology Institute (FABI), Department of Biochemistry, Genetics & Microbiology, University of Pretoria, Pretoria 0002, South Africa; (B.H.); (E.S.); (D.R.)
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5
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Xiao J, Wang X, Zheng Z, Wu Y, Wang Z, Li H, Li P. Molecular characterization of a novel deltaflexivirus infecting the edible fungus Pleurotus ostreatus. Arch Virol 2023; 168:162. [PMID: 37195309 DOI: 10.1007/s00705-023-05789-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 04/18/2023] [Indexed: 05/18/2023]
Abstract
A novel positive single-stranded RNA virus, Pleurotus ostreatus deltaflexivirus 1 (PoDFV1), was isolated from the edible fungus Pleurotus ostreatus strain ZP6. The complete genome of PoDFV1 is 7706 nucleotides (nt) long and contains a short poly(A) tail. PoDFV1 was predicted to contain one large open reading frame (ORF1) and three small downstream ORFs (ORFs 2-4). ORF1 encodes a putative replication-associated polyprotein of 1979 amino acids (aa) containing three conserved domains - viral RNA methyltransferase (Mtr), viral RNA helicase (Hel), and RNA-dependent RNA polymerase (RdRp) - which are common to all deltaflexiviruses. ORFs 2-4 encode three small hypothetical proteins (15-20 kDa) without conserved domains or known biological functions. Sequence alignments and phylogenetic analysis suggested that PoDFV1 is a member of a new species in the genus Deltaflexivirus (family Deltaflexiviridae, order Tymovirales). To our knowledge, this is the first report of a deltaflexivirus infecting P. ostreatus.
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Affiliation(s)
- Junbo Xiao
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Xin Wang
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Ziru Zheng
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Yugu Wu
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Zhe Wang
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Huaping Li
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China.
| | - Pengfei Li
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China.
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Song X, Cao J, Xie S, Wang Y, Yin X, Guo Y, Xu C, Guo L, Wu H, Zhang M. Molecular characterization of a novel ourmia‑like virus from the phytopathogenic fungus Botryosphaeria dothidea. Arch Virol 2023; 168:106. [PMID: 36899128 DOI: 10.1007/s00705-023-05739-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 02/16/2023] [Indexed: 03/12/2023]
Abstract
Here, we describe a novel ourmia-like virus, Botryosphaeria dothidea ourmia-like virus 2 (BdOLV2), derived from the phytopathogenic fungus Botryosphaeria dothidea strain ZM180192-1 infecting maize in Henan province of China. The complete genome sequence of BdOLV2 consists of a positive-sense single-stranded RNA (+ ssRNA) segment with a length of 2,532 nucleotides (nt). The sequence contains a large open reading frame (ORF) encoding a putative RNA-dependent RNA polymerase (RdRp) consisting of 605 amino acids (aa) with a molecular mass of 68.59 kDa. This RdRp protein contains eight typical conserved motifs associated with ourmia-like viruses. BLASTp analysis revealed that the RdRp protein of BdOLV2 had the highest similarity (62.10%, 58.15%, and 55.75% identity, respectively) to a virus previously identified as "Botourmiaviridae sp.", Macrophomina phaseolina ourmia-like virus 2, and Macrophomina phaseolina ourmia-like virus 2-A. Phylogenetic analysis based on the RdRp aa sequence indicated that BdOLV2 is a new member of the genus Magoulivirus in the family Botourmiaviridae.
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Affiliation(s)
- Xinzheng Song
- College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China
| | - Jiayuan Cao
- College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China
| | - Shunpei Xie
- College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China
| | - Yanfen Wang
- College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China
| | - Xinming Yin
- College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China
| | - Yashuang Guo
- College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China
| | - Chao Xu
- College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China
| | - Lihua Guo
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, 100193, Beijing, China
| | - Haiyan Wu
- Analytical Instrument Center, Henan Agricultural University, 450002, Zhengzhou, China.
| | - Meng Zhang
- College of Plant Protection, Henan Agricultural University, 450002, Zhengzhou, China.
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Sun A, Luo L, Zhao Z, Kang L, Li C, Dong W, Yang G. Complete genome sequence of a novel fusarivirus from Rhizoctonia solani AG-3 PT strain 3P-2-2. Arch Virol 2023; 168:75. [PMID: 36707487 DOI: 10.1007/s00705-022-05673-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 10/18/2022] [Indexed: 01/29/2023]
Abstract
Here, we describe a novel mycovirus, tentatively designated as "Rhizoctonia solani fusarivirus 6" (RsFV6), which was discovered in Rhizoctonia solani AG-3 PT strain 3P-2-2. The virus has a single-stranded positive-sense RNA (+ssRNA) genome of 6141 nucleotides containing two open reading frames (ORFs) and a poly(A) tail. ORF1 encodes a large polypeptide of 1,862 amino acids (aa) with conserved RNA-dependent RNA polymerase (RdRp) and helicase (Hel) domains. ORF2 encodes a putative 167-aa protein of unknown function. BLASTp searches revealed that the ORF1-encoded polypeptide showed the highest sequence similarity (70.67% identity) to that of Rhizoctonia solani fusarivirus 3 (RsFV3), which was isolated from Rhizoctonia solani AG-2-2LP. Multiple sequence alignments and phylogenetic analysis based on RdRp and Hel sequences indicated that RsFV6 could be a novel member of the genus Alphafusarivirus family Fusariviridae.
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Affiliation(s)
- Aili Sun
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Li Luo
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Zifang Zhao
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Lijuan Kang
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Chengyun Li
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Wenhan Dong
- Technology Department, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.
| | - Genhua Yang
- State Key Laboratory for Protection and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.
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Zhao Y, Du H, Liu Y, Zhong R, Guan Z, Wang G, Zhang Y, Wei C, Wang M, Wan X, Zang R, Wen C, Meng H. Molecular characterization of a novel victorivirus isolated from the phytopathogenic fungus Phaeobotryon rhois. Arch Virol 2023; 168:15. [PMID: 36593368 DOI: 10.1007/s00705-022-05678-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 11/22/2022] [Indexed: 01/03/2023]
Abstract
Phaeobotryon rhois is an important pathogenic fungus that causes dieback and canker disease of woody hosts. A novel mycovirus, tentatively named "Phaeobotryon rhois victorivirus 1" (PrVV1), was identified in P. rhois strain SX8-4. The PrVV1 has a double-stranded RNA (dsRNA) genome that is 5,224 base pairs long and contains two open reading frames (ORF1 and ORF2), which overlap at a AUGA sequence. ORF1 encodes a polypeptide of 786 amino acids (aa) that contains the conserved coat protein (CP) domain of victoriviruses, while ORF2, encodes a large polypeptide of 826 aa that contains the conserved RNA-dependent RNA polymerase (RdRp) domain of victoriviruses. Our analysis of genomic structure, homology, and phylogeny indicated that PrVV1 is a novel member of the genus Victorivirus in the family Totiviridae. This is the first report of the complete genome sequence of a victorivirus that infects P. rhois.
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Affiliation(s)
- Ying Zhao
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Hongyan Du
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Yuanyuan Liu
- Yinchuan City Center for Disease Control and Prevention, Yinchuan, China
| | - Rongrong Zhong
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Zhengzhe Guan
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Ganlin Wang
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Yuanyuan Zhang
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Chenxing Wei
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Mengjiao Wang
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Xinru Wan
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Rui Zang
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Caiyi Wen
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Haoguang Meng
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China.
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