Abstract
Low-temperature atmospheric-pressure air plasma is a source of charged and neutral gas species. In this study, N-carrying tobacco plants were inoculated with plasma irradiated and non-irradiated tobacco mosaic virus (TMV) solution, resulting in necrotic local lesions on non-irradiated, but not on irradiated, TMV-inoculated leaves. Virus particles were disrupted by plasma irradiation in an exposure-dependent manner, but the viral coat protein subunit was not. TMV RNA was also fragmented in a time-dependent manner. These results indicate that plasma irradiation of TMV can collapse viral particles to the subunit level, degrading TMV RNA and thereby leading to a loss of infectivity.



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Acknowledgements
This study was financially supported by grants for “Scientific Research on Innovative Areas” from the Ministry of Education, Culture, Science, Sports and Technology (MEXT), Japan (grant numbers 16H06429, 16K21723, and 16H06435), and by the Japan Society for the Promotion of Science (JSPS) through the JSPS Core-to-Core Program (Advanced Research Networks) entitled “Establishment of international agricultural immunology research-core for a quantum improvement in food safety”. This work was also supported by the Egyptian Government.
Funding
This study was funded by grants for “Scientific Research on Innovative Areas” from the Ministry of Education, Culture, Science, Sports and Technology (MEXT), Japan (grant numbers 16H06429, 16K21723, and 16H06435), and by the Japan Society for the Promotion of Science (JSPS) through the JSPS Core-to-Core Program (Advanced Research Networks) entitled “Establishment of international agricultural immunology research-core for a quantum improvement in food safety”. This work was also supported by the Egyptian Government.
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Takahashi, H. has received research grants from the Ministry of Education, Culture, Science, Sports and Technology (MEXT), Japan and the Japan Society for the Promotion of Science (JSPS). Hanbal, S.E. has received a Shuttle Research Program from the Egyptian Government. All authors declare that they have no conflict of interest.
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Hanbal, S.E., Takashima, K., Miyashita, S. et al. Atmospheric-pressure plasma irradiation can disrupt tobacco mosaic virus particles and RNAs to inactivate their infectivity. Arch Virol 163, 2835–2840 (2018). https://doi.org/10.1007/s00705-018-3909-4
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DOI: https://doi.org/10.1007/s00705-018-3909-4