Assistant Professor and Extension Specialist Ornamental pathology, plant virology Lab web site: Lewandowski Lab Research (50%) and Extension (50%) My program addresses key issues in the plant health management of floriculture and nursery crops for Ohio's important green industry.

I have a background in molecular plant virology and retain my research interests in virus diseases, applying much of my basic research background to more applied projects.  Major projects that my team is working on include:

• Characterization of resistance to Hosta Virus X in Hosta cultivers

• Development of safe and efficient sanitation methods/protocols to prevent spread of viruses and other pathogens through propagation and nursery/greenhouse operations

• Characterization of atypical symptoms on honeylocust

• Extension outreach for the nursery/landscape/floriculture industry

• Additional related projects

Online Publication Disinfecting TMV > Greenhouse Grower Online by Amanda J. Hayes (Plant Health Management graduate, Honors student, and Dennis J. Lewandowski

Selected Publications

• Kleczewski, N.M., D. Lewandowski, and P. (E.) Bonello. 2008. Mycorrhizae in Urban Landscapes > > OSU Extension Fact Sheet HYG-3305-08.

• Kleczewski, N.M., D. Lewandowski, and P. (E.) Bonello. 2008. Sudden Oak Death (aka Ramorum blight) > OSU Extension Fact Sheet HYG-3309-08

• Kleczewski, N.M., and D.J. Lewandowski. 2008. Virus Diseases of Greenhouse Floral Crops > OSU Extension Fact Sheet HYG-3065-08

• Lewandowski, D.J. 2008. Hosta virus X > OSU Extension Fact Sheet HYG-3069-08

• Lewandowski, D.J. 2008. Tobamovirus. In Encyclopedia of Virology, 3rd Edition. B.W.J. Mahy and M.H.V. van Regenmortel (Eds). Academic Press. 5 pp.

• Wallis, C., and D.J. Lewandowski.  2008. Black Spot of Roses > OSU Extension Fact Sheet HYG 3072-08

• Wallis, C.W. and D.J. Lewandowski. 2008. Cedar Rust Diseases of Ornamental Plants > OSU Extension Fact Sheet HYG 3055-08

• Wallis, C., D.J. Lewandowski, and P. (E.) Bonello.  2008.  Diplodia Tip Blight of Two-Needled Pines  > OSU Extension Fact Sheet HYG -3041-08

• Wallis, C., D.J. Lewandowski, and P. (E.) Bonello. 2008. Dutch Elm Disease > OSU Extension Fact Sheet HYG-3308-08

• Knapp, E., D. Achor, and D.J. Lewandowski. 2007. Tobacco mosaic virus defective RNAs expressing C-terminal methyltransferase domain sequences are severely impaired in long-distance movement in Nicotiana benthamiana. Virology 367, 82-91.

• Adkins, S., I. Kamenova, E. Rosskopf, and D.J. Lewandowski. 2007. Identification and characterization of a novel tobamovirus from tropical soda apple in Florida. Plant Disease 91, 287-293.

• Hoitink, H., and D. Lewandowski. 2008. Biological control of diseases of containerized plants.  Biocycle. 49, 32-36.

• Lewandowski, D.J. 2007. Improved methods for virus detection, and why “virus free” could be misleading.  23rd Annual Pest and Disease Management for Ornamentals Conference Proceedings, pp. 52-56.
• Adkins, S., I. Kamenova, P. Chiemsombat, C.A. Baker, and D.J. Lewandowski. 2006. Tobamoviruses from hibiscus in Florida and beyond. In Proceedings of the 11th International Symposium on Virus Diseases of Ornamental Plants, Taichung, Taiwan. Acta Hort. 722, 65-70.

• Adkins, S. and Lewandowski, D. J. 2005. A system to explore Tomato spotted wilt virus gene function. Acta Hort 695, 85-90.

• Knapp, E., Danyluk, G. D., Achor, D., and Lewandowski, D. J. 2005. A bipartite Tobacco mosaic virus - defective RNA (dRNA) system to study the role of the N-terminal methyltransferase domain in cell-to-cell movement of dRNAs. Virology 341, 47-58.

• Lewandowski, D. J. 2005. Tobamovirus genus. In Virus Taxonomy, Classification and Nomenclature of Viruses: 8th Report of the International Committee on Taxonomy of Viruses. Fauquet, C. M., Mayo, M. A., Maniloff, J., and Ball, L. A., Eds. Academic Press, London. 1009-1014.

• Lewandowski, D. J. and Adkins, S. 2005. The tubule forming NSm protein of Tomato spotted wilt virus complements cell-to-cell and long distance movement of Tobacco mosaic virus. Virology 342, 26-37.

• > More Publications

Contact Information

Dennis J. Lewandowski
Office: 475C Kottman Hall

The Ohio State University
Department of Plant Pathology
2021 Coffey Road
Columbus OH 43210-1087

Phone: (614) 292-1293
FAX: (614) 292-4455
E-mail: lewandowski.49@osu.edu