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Hantula J, Mäkelä S, Xu P, Brusila V, Nuorteva H, Kashif M, Hyder R, Vainio EJ. Multiple virus infections on Heterobasidion sp. Fungal Biol 2020; 124:102-109. [DOI: 10.1016/j.funbio.2019.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/26/2019] [Accepted: 12/05/2019] [Indexed: 11/27/2022]
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Picarelli MASC, Gobatto D, Patrício F, Rivas EB, Colariccio A. Vírus que infectam fungos fitopatogênicos. ARQUIVOS DO INSTITUTO BIOLÓGICO 2018. [DOI: 10.1590/1808-1657000162016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
RESUMO: Micovírus são vírus que infectam todos os taxa de fungos. São geralmente crípticos (latentes), mas podem causar pequenas ou imperceptíveis alterações no hospedeiro. Nos fungos fitopatogênicos, os vírus podem interferir com os sintomas e, em alguns casos, reduzir a virulência de seu hospedeiro; por esta razão, são objeto de estudo, por serem um potencial agente de biocontrole e por serem ferramentas importantes para o conhecimento sobre os mecanismos de patogênese de fungos. A presente revisão teve o objetivo de reunir os dados de literatura relacionados aos aspectos gerais da biologia e do comportamento dos micovírus presentes em alguns fungos fitopatogênicos.
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Lyu R, Zhang Y, Tang Q, Li Y, Cheng J, Fu Y, Chen T, Jiang D, Xie J. Two alphapartitiviruses co-infecting a single isolate of the plant pathogenic fungus Rhizoctonia solani. Arch Virol 2017; 163:515-520. [PMID: 29101540 DOI: 10.1007/s00705-017-3627-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 09/25/2017] [Indexed: 11/24/2022]
Abstract
Seven dsRNA segments were detected from a single Rhizoctonia solani strain HG81. From the full-length cDNA sequences of four smaller dsRNA segments, the genomes of two related partitiviruses, designated as Rhizoctonia solani partitivirus 3 (RsPV3) and RsPV4, were determined. The genomes of RsPV3 and RsPV4 are both composed of two separate dsRNA segments, with each segment possessing a single open reading frame (ORF). ORF1 from RsPV3 and RsPV4 encodes a putative RNA-dependent RNA polymerase, while ORF2 of RsPV3 and RsPV4 encodes a putative capsid protein. RsPV3 and RsPV4 share high sequence identity with viruses classified within the genus Alphapartitivirus, family Partitiviridae.
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Affiliation(s)
- Ruiling Lyu
- State Key Laboratory of Agricultural Microbiology, Hubei Key Laboratory of Plant Pathology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Yi Zhang
- State Key Laboratory of Agricultural Microbiology, Hubei Key Laboratory of Plant Pathology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Qing Tang
- Xiangyang Academy of Agricultural Sciences, Xiangyang, 441057, Hubei, China
| | - Yangyi Li
- State Key Laboratory of Agricultural Microbiology, Hubei Key Laboratory of Plant Pathology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Jiasen Cheng
- State Key Laboratory of Agricultural Microbiology, Hubei Key Laboratory of Plant Pathology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Yanping Fu
- State Key Laboratory of Agricultural Microbiology, Hubei Key Laboratory of Plant Pathology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Tao Chen
- State Key Laboratory of Agricultural Microbiology, Hubei Key Laboratory of Plant Pathology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Daohong Jiang
- State Key Laboratory of Agricultural Microbiology, Hubei Key Laboratory of Plant Pathology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Jiatao Xie
- State Key Laboratory of Agricultural Microbiology, Hubei Key Laboratory of Plant Pathology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
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Mitovirus UGA(Trp) codon usage parallels that of host mitochondria. Virology 2017; 507:96-100. [PMID: 28431284 DOI: 10.1016/j.virol.2017.04.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 04/09/2017] [Accepted: 04/10/2017] [Indexed: 02/02/2023]
Abstract
Mitoviruses replicate in mitochondria of their host fungi. They have small RNA genomes that encompass a single ORF encoding the viral RdRp. Since UGA codons encode Trp in fungal mitochondria, the RdRp ORF of a typical mitovirus includes multiple UGA codons. In some mitoviruses, however, the ORF has no such codons, suggesting that these particular viruses may be under selective pressure to exclude them. In this report, new evidence is presented that host fungi whose mitoviruses have no or few UGA codons are distinctive in also having no or few UGA codons in their core mitochondrial genes. Thus, the relative exclusion of such codons in a subset of mitoviruses appears to reflect most fundamentally that UGA(Trp) is a rare mitochondrial codon in their particular hosts. The fact that UGA(Trp) is a rare mitochondrial codon in many fungi appears not to have been widely discussed to date.
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Bartz FE, Cubeta MA, Toda T, Naito S, Ivors KL. An In Planta Method for Assessing the Role of Basidiospores in Rhizoctonia Foliar Disease of Tomato. PLANT DISEASE 2010; 94:515-520. [PMID: 30754463 DOI: 10.1094/pdis-94-5-0515] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A tomato (Solanum lycopersicum) foliar blight disease of unknown etiology was observed in North Carolina (NC) during 2005 to 2006. Symptoms included necrotic lesions and blighted leaves, with signs of white mycelial growth on abaxial leaf surfaces. The morphology of isolates from symptomatic leaves was consistent with that of Rhizoctonia solani. Because the pattern of symptom expression suggested that basidiospores were the primary inoculum source, Koch's postulates were fulfilled using a method to generate basidiospores in planta. Isolates were characterized by morphology, DNA sequence analysis, hyphal anastomosis, and somatic hyphal interactions. Phylogenetic analyses and hyphal anastomosis criteria support placement of the isolates in R. solani anastomosis group 3 (AG-3). Tomato foliar blight isolates from NC form a single phylogenetic group with tomato isolates of R. solani AG-3 from Japan and are more closely related to R. solani AG-3 isolates from potato than tobacco. Isolates exhibited both compatible and incompatible hyphal interactions when paired in vitro. To our knowledge, this is the first detailed report of tomato foliar blight caused by R. solani AG-3 in North America. A comprehensive description of the technique employed for producing basidiospores is presented with potential utility for understanding foliar disease etiology in other Rhizoctonia pathosystems.
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Affiliation(s)
- Faith E Bartz
- Department of Plant Pathology, North Carolina State University, Raleigh 27695
| | - Marc A Cubeta
- Department of Plant Pathology, North Carolina State University, Raleigh 27695
| | - Takeshi Toda
- Faculty of Bioresource Science, Akita Prefectural University, Shimo-shinjo, Akita 010-0195, Japan
| | - Shigeo Naito
- Agriculture, Forestry and Fisheries Technical Information Society, Nihonbashi-kabutocho, Chuo-ku, Tokyo 103-0026
| | - Kelly L Ivors
- Department of Plant Pathology, North Carolina State University, Mountain Horticultural Crops Research & Extension Center, Mills River 28759
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