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Anton Baudoin

Program Focus

Current research centers on biology and control of fungal diseases of grapes, with current emphasis on powdery and downy mildew, and Botrytis bunch rot.

Current Projects

Grapes are one of the fastest growing crops in Virginia, now over 2000 high-value acres, and are considered one of the best alternatives to crops for which profitability has been declining.  However, in our humid climate, grape diseases are a constant concern.  The most economically profitable varieties of grape are highly susceptible to several diseases, and for this reason grape crops are treated with frequent fungicide sprays.  These intensive spray programs and the highly selective nature of modern fungicides entail a serious risk of pathogens becoming resistant to some fungicides.  Currently, the only way for a grower to find out that such resistance has developed is to experience a disease control failure, which may cause severe crop loss and even complete crop failure.

Surveys conducted by my lab have discovered that grape downy mildew had developed resistance to strobilurin fungicides in many Virginia locations.  Strobilurin fungicides have played a major role in grape disease management programs in recent years, and this was the first detection of this type of resistance in grape downy mildew in North America. In addition, powdery mildew resistance to this group was also found in many locations. We have also measured the sensitivity of grape powdery mildew populations to sterol-inhibiting fungicides, another key group, and have documented that reduced sensitivity to the most commonly used compounds is widespread.  A more recent survey of Botrytis cinerea, the cause of grape bunch rot, revealed the presence in many vineyards of resistance to strobilurins, boscalid, the benzimidazoles, the anilinopyrimidines (cyprodinil and pyrimethanil), and to a much lesser extent fenhexamid.


Ph.D., Plant Pathology, University of California, Riverside, 1981

M.S., Wageningen University, The Netherlands, 1975


  • 1987 – present: Associate Professor, Department of Plant Pathology, Physiology and Weed Science, Virginia Polytechnic Institute and State University, Blacksburg
  • 1981-1987: Assistant Professor, Department of Plant Pathology, Physiology and Weed Science, Virginia Polytechnic Institute and State University, Blacksburg
  • 1980-1981: Postdoctoral Research Scientist, Air Pollution Laboratory, University of California, Riverside.

Selected Major Awards

  • 1994: Excellence in Teaching Award, American Phytopathological Society
  • 2003: College Certificate of Teaching Excellence, College of Agriculture and Life Sciences, VPI&SU

Courses Taught

  • AT 0434 – Pest Management (diseases and weeds sections)
  • PPWS 4104 – Plant Pathology
  • PPWS 5204 – Principles of Plant Disease Management
  • PPWS 5214 – Diseases of Crop Plants
  • PPWS 6004 – (Topics) Epidemiology of Plant Diseases
  • PPWS 6004 – (Topics) Identifying Plant Pathogens

Other Teaching and Advising

  • Graduate Director, PPWS
  • Coordinator of Plant and Pest Management Option Online Master program in Agriculture and Life Sciences,
  • 2006-2011. Editor in Chief of The Plant Health Instructor / APS Education Center, an online journal of the American Phytopathological Society focusing on the development of teaching materials

Program Focus

I contribute to outreach to grape growers (communicate research findings and general education on plant diseases and their management), and master gardener training.

  • Colcol, J. F., Rallos, L. E., and Baudoin, A. B. 2012. Sensitivity of Erysiphe necator to demethylation inhibitor fungicides in Virginia. Plant Disease 96: 111-116.
  • Rallos, L.E. and A. Baudoin. 2011. Stability of QoI resistance of grapevine powdery mildew in competition experiments and in the field. Phytopathology 101:S274 (Abstract)
  • Baudoin, A.B. 2010. Current status of benzimidazole resistance of Erysiphe necator in Virginia. Phytopathology 100: S12 (Abstract)
  • Marine, S.C., K.S. Yoder, and A. Baudoin. 2010. 2010. Powdery mildew of apple. The Plant Health Instructor. DOI:10.1094/PHI-I-2010-1021-01
  • Baudoin, A., Olaya, G., Delmotte, F., Colcol, J. F., and Sierotzki, H. 2008. QoI resistance of Plasmopara viticola and Erysiphe necator in the mid-Atlantic United States. Online. Plant Health Progress doi:10.1094/PHP-2008-0211-02-RS.
  • Baudoin, A.B.A.M. 2007. The Plant Disease Doughnut, a Simple Graphic to Explain what is Disease and what is a Pathogen. The Plant Health Instructor. DOI: 10.1094/PHI-T-2007-1221-01
  • Baudoin, A., 2004. Plant Disease Notebook assignment offers students a way to customize a course. The Plant Health Instructor. DOI:10.1094/PHI-T-2004-0317-01