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Kubota K, Usugi T, Tomitaka Y, Shimomoto Y, Takeuchi S, Kadono F, Yanagisawa H, Chiaki Y, Tsuda S. Perilla Mosaic Virus Is a Highly Divergent Emaravirus Transmitted by Shevtchenkella sp. (Acari: Eriophyidae). PHYTOPATHOLOGY 2020; 110:1352-1361. [PMID: 32202482 DOI: 10.1094/phyto-01-20-0013-r] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Shiso (Perilla frutescens var. crispa) is widely grown as an important vegetable or herb crop in Japan. Beginning around the year 2000, occurrences of severe mosaic symptoms on shiso were documented and gradually spread across Kochi Prefecture, one of four major shiso production areas in Japan. Next generation sequencing and cloning indicated the presence of a previously unknown virus related to the members of the genus Emaravirus, for which we proposed the name Perilla mosaic virus (PerMV). The genome of PerMV consists of 10 RNA segments, each encoding a single protein in the negative-sense orientation. Of these proteins, P1, P2, P3a, P3b, P4, and P5 show amino acid sequence similarities with those of known emaraviruses, whereas no similarities were found in P6a, P6b, P6c, and P7. Characteristics of the RNA segments as well as phylogenetic analysis of P1 to P4 indicate that PerMV is a distinct and highly divergent emaravirus. Electron microscopy observations and protein analyses corresponded to presence of an emaravirus. Transmission experiments demonstrated that an eriophyid mite, Shevtchenkella sp. (family Eriophyidae), transmits PerMV with a minimum 30-min acquisition access period. Only plants belonging to the genus Perilla tested positive for PerMV, and the plant-virus-vector interactions were evaluated. The nucleotide sequences reported here are available in the DDBJ/ENA/GenBank databases under accession numbers LC496090 to LC496099.
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Affiliation(s)
- Kenji Kubota
- Central Region Agricultural Research Center, NARO, Kannondai, Tsukuba, Ibaraki 305-8666, Japan
| | - Tomio Usugi
- Central Region Agricultural Research Center, NARO, Kannondai, Tsukuba, Ibaraki 305-8666, Japan
| | - Yasuhiro Tomitaka
- Kyushu Okinawa Agricultural Research Center, NARO, Suya, Koshi, Kumamoto 861-1192, Japan
| | | | - Shigeharu Takeuchi
- Kochi Agricultural Research Center, Hataeda, Nankoku, Kochi 783-0023, Japan
| | - Fujio Kadono
- Department of Clinical Plant Science, Faculty of Bioscience and Applied Chemistry, Hosei University, Kajino-cho, Koganei, Tokyo 184-8584, Japan
| | - Hironobu Yanagisawa
- Central Region Agricultural Research Center, NARO, Kannondai, Tsukuba, Ibaraki 305-8666, Japan
| | - Yuya Chiaki
- Central Region Agricultural Research Center, NARO, Kannondai, Tsukuba, Ibaraki 305-8666, Japan
| | - Shinya Tsuda
- Central Region Agricultural Research Center, NARO, Kannondai, Tsukuba, Ibaraki 305-8666, Japan
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Sato Y, Castón JR, Suzuki N. The biological attributes, genome architecture and packaging of diverse multi-component fungal viruses. Curr Opin Virol 2018; 33:55-65. [DOI: 10.1016/j.coviro.2018.07.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 06/29/2018] [Accepted: 07/05/2018] [Indexed: 12/19/2022]
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