Ornamental Plant Biotechnology and Plant Pathology

Office Location: 374 Plant Biotechnology Building
Office Phone: 865-974-0221
Email Address:



PhD. North Carolina State University, Dual Major: Plant Pathology and Botany

M.S. The Pennsylvania State University, Major: Biology (Botany/Mycology)

B.S. Juniata College (Huntingdon, PA), Major: Biology; Minor: Chemistry


Teaching Program:

Co-instructor for EPP 675 Scientific and Grant Proposal Writing and EPP 528 Laboratory Essentials


Research Description:

Our program develops molecular markers to study genetic diversity and populations of pathogens and ornamental plants.



Representative Publications:

Lipi, P. M. T. Mmbaga, G. Meru, G. Zhang, L. Mackasmiel, X. Wang, P. Wadl and R. N. Trigiano. Genetic mapping of resistance to powdery mildew in Cornus florida. (in review).

Trigiano, R. N., E.C. Bernard, M.T. Windham, A.S. Windham, T.P. Edwards and S.L. Boggess. 2016. First report of powdery mildew on henbit (Lamium amplexicaule) and dead-nettle (L. purpureum) caused by Neoërysiphe galeopsidis in the southern United States. Plant Dis. (in press).

*Amissah, J. N., P. A. Wadl, D. Hadziabdic, S. L. Boggess and R. N. Trigiano. 2016. Characterization of thirteen microsatellite loci from the Ghanian antimalarial plant Cryptolepis sanguinolenta. J. Med. Plant Res. 10(14):183-1




D. J., Z. T. Li, N. L. Grant, D. A., Dean, R.N. Trigiano and S.A. Dhekney. 2016. The application of precision breeding (PB) for crop improvement is fully consistent with the plant life cycle: The utility of PB for grapevine. Acta. Hort. DOI:10.17660/Actahortic.1115:49-5



iano, R.N., A. S. Windham, M. T. Windham and P.A. Wadl. 2016. ‘Appalachian Joy’: A supernumery white-bracted cultivar of Cornus florida with powdery mildew resistance. HortScience 51(in press).

Gray, D. J., Z. T. Li, N. L. Grant, D. A., Dean, R.N. Trigiano, D.R. Bergey and S.A. Dhekney. 2016. La selection vegetale de precision pour la mise au point de nouveaux cepages. Revue des Oenologues No 157 spécial. January 2016.

Trigiano, R. N., E. Bernard, D. Hadziabdic, A. J. Dattilo and P. A. Wadl. 2016. First report of powdery mildew on whorled sunflower (Helianthus verticillatus) caused by Golovinomyces ambrosae. Plant Dis. 100(5):1017.

Moore, P.A., P. A. Wadl, J. A. Skinner, R. N. Trigiano, E. C. Bernard, W. E. Klingeman and A. J. Dattilo. 2016. Review of endangered Pityposis ruthii. Bull. Torrey Bot. 143(2): 117-13



EPP Personnel​