New MSU Plant & Pest Diagnostics director named
Plant diagnostic services continue at under the new direction of Jan Byrne, who holds a doctoral degree, following the planned retirement of Ray Hammerschmidt.
Byrne, who holds a doctoral degree, has worked at MSU as the plant pathology diagnostician since 1999, after earning a B.S. in plant science from Cornell University and an M.S. and Ph.D. in plant pathology from MSU.
In addition to her diagnostic role, Byrne teaches plant pathology to students in the MSU Institute of Agricultural Technology and has served alongside Hammerschmidt as the associate director for the North Central Plant Diagnostic Network since 2003.

Ray Hammerschmidt, pictured right, is “passing the torch” to new director of MSU Plant & Pest Diagnostics, Jan Byrne, or perhaps more appropriately a cedar-hawthorn rust-infected branch.
In addition to those roles, Hammerschmidt is an accomplished professor of plant pathology, focusing on physiology and biochemistry of disease and disease resistance in cucurbits, potatoes, cherries, arabidopsis (small flowering plants related to cabbage and mustard), and soybeans.
Hammerschmidt also taught MSU’s core plant pathology class, two graduate plant pathology courses and served in various administrative roles including the chair of the former Department of Plant Pathology, interim director of MSU Extension and Project GREEEN advisor.
When asked about his successor, Hammerschmidt commented, “I’m very pleased that Dr. Byrne has accepted the directorship of Plant & Pest Diagnostics. She is already very well-known for her excellence as a plant pathology diagnostician and Plant & Pest Diagnostics team member. She has a very clear vision for how the Plant & Pest Diagnostics will continue to provide excellent service while growing and evolving to meet changing needs. As the associate director of North Central Plant Diagnostic Network, she has provided valuable assistance and guidance to both me and members at the regional and national levels. I have no doubt that Jan will excel in her new position and continue to move diagnostics forward!”
MSU has offered plant-related diagnostic services to the public and local and national agricultural communities for more than 25 years. Services include identification of plant pests and plant health analysis spanning pathology, entomology, nematology and abiotic issues.
As the North Central Plant Diagnostic Regional Center for the North Central Plant Diagnostic Network, MSU has faculty and staff devoted to each of these diagnostic disciplines and continues to expand its capabilities through advances in molecular diagnostics.
The services at Plant & Pest Diagnostics will remain unchanged and Byrne will continue to serve as the plant pathology diagnostician and teach in her new leadership position.
— Erin Hill, Michigan State University Department of Plant, Soil and Microbial Sciences