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Tammy Cunningham
Administrative Manager

345 Johnson Hall
Pullman, WA 99164
(509) 335-4852
Lisa Lujan
Academic Coordinator
131 Johnson Hall
(509) 335-9542
Deb Marsh
Academic Coordinator
131 Johnson Hall
Pullman, WA 99164
(509) 335-2615

Technical Staff

Mike AdamsMichael J. Adams
Research Technologist

372 Johnson Hall/ B6-B8 PBS, Pullman, WA 99164
(509) 335-9541

Robert BonsallRobert Bonsall
Research Scientist with David Weller

As a Biochemist, senior research scientist and director of the USDA, Agricultural Research Service’s Bio Analytical Laboratory, Research and Developmental Chemistries at Washington State University (WSU), I was responsible for the initial design of the laboratory and instrumentation. My expertise is in Biochemistry with emphasis on small molecule metabolomics and instrumentation. I conduct hands-on research to develop chemical isolation protocols and instrumental analysis used by researchers worldwide. Photodiode array (PDA) High Performance Liquid Chromatography (HPLC) & PDA Ultra Pressure Liquid Chromatography (UPLC) for isolation, identification, chemical modification and spectral characterization of plant signal molecules and bacterial antibiotics. HPLC & UPLC mass spectral analysis (Thermabeam electron impact, Quadrupole/Orthoganol Time of Flight and Synapt Tri-Wave MS) to elucidate the structure of antibiotics and small molecule intermediates involved in biocontrol and bio-markers of wheat and barley health. These antibiotics are produced in field soils and are responsible for the biocontrol of root diseases of wheat, barley and biofuel crops. The rhizosphere metabolome can be defined and further understood by identifying these small molecule intermediates. They are also used as specific biomarkers for the biocontrol of root diseases of crops in agricultural fields. Based on my research achievements at WSU, I was honored the Presidents Employees Excellence Award in 1999.

Aida Damaso Duarte
Research Associate with Dr. Tim Murray



Mike DerieMike Derie
Scientific Assistant Senior with Lindsey du Toit

Scientific Assistant for the Vegetable Seed Pathology program located at the WSU Mount Vernon NWREC. Mike assists with lab, greenhouse, and field research on diseases affecting small-seeded vegetable seed crops in Washington.

16650 State Route 536, Mount Vernon, WA 98273,
(360) 848-6142

Marianne Elliott
Research Associate with Gary Chastagner

2606 W Pioneer Way, Puyallup, WA 98371
(253) 445-4500

Babette GundersenBabette Gundersen
Agricultural Research Technologist III with Debra Inglis

Babette works as Ag Tech III in the Vegetable Pathology Program at WSU-Mount Vernon NWREC. Winner of the WSU President’s Employee Excellent Award in 2002, she is actively involved in field, greenhouse, and laboratory research projects on a wide range of vegetables including green peas and red potatoes.

16650 State Route 536, Mount Vernon, WA 98273
(360) 848-6135

S GyawaliSanjaya Gyawali

Research Associate with Lindsey du Toit

Sanjaya Gyawali’s Research Associate position is funded by a USDA NIFA Specialty Crop Research Initiative Grant No. 2017-51181-26830 in collaboration with the University of Arkansas on marker assisted selection for resistance in spinach germplasm to downy mildew, white rust, and Fusarium wilt. Sanjaya is leading the screening of spinach germplasm for resistance to Fusarium wilt. He obtained a B.Sc. degree in plant pathology and an M.Sc. degree in plant breeding from Tribhuvan University in Nepal, where he also served as a Research and Teaching Assistant in 2000-2001. Sanjaya then worked as a Senior Rice Breeder for the Local Initiative for Biodiversity Research and Development (LI-BIRD) in Nepal from 2001-2005, and completed a PhD degree in plant pathology at North Dakota State University from 2006-2010. From 2010 to 2012, Sanjaya was a Visiting Research Fellow (Postdoctorate) at Agriculture and Agri-Food Canada in Saskatoon, Canada, where he was involved in breeding rapeseed (Canola), particularly for resistance to white mold caused by Sclerotinia sclerotiorum. From 2013-2016, he served as the Barley Breeder for the International Center for Agricultural Research in Dry Areas (ICARDA), working on barley improvement program with almost 100 scientists from 30 countries. In 2017, Sanjaya became a Research Associate and Instructor at the University of Manitoba in Winnipeg, Canada, breeding for resistance to Fusarium head blight of wheat and barley, and teaching a plant disease management course. Sanjaya is leading the spinach Fusarium wilt breeding project with expertise in disease resistance breeding, genetics, plant-pathogen interactions, molecular genetics, genomics, QTL mapping, genome-wide association studies (GWAS), and marker assisted selection.


Jennifer Han
Research Associate with Lori Carris

Romana Iftikhar
Research Associate with Hanu Pappu


Jeremy Jewell
Research Associate with Kiwamu Tanaka
(Visit his Profile Link for more information)

Martin JosephMartin Joseph
Scientific Assistant Clean Plant Center NW

Martin is the tissue culture specialist that develops grapevines and hop plants that are free of viruses for the National Clean Plant Network.

24106 N. Bunn Rd., Prosser, WA 99350
(509) 786-9364

Yan LiuYan Liu
Research Associate with Xianming Chen

Dr. Heather MacKay

Project Manager, USDA NIFA SCRI Project Manager with Dr. Lindsey du Toit     

Heather MacKay lives in Lynden, WA. She grew up on a farm in Zimbabwe before moving to South Africa to complete a BSc degree in Physics and Applied Mathematics from Rhodes University, South Africa, and a PhD in Physical Oceanography from the University of Port Elizabeth, South Africa. Heather’s career has been mostly in the public sector, working as a water and environmental policy specialist. She served for several years as Senior Specialist Scientist in the South African Department of Water Affairs and Forestry focusing on development of water quality standards, national water policy and water law. Heather was then appointed to the Water Research Commission of South Africa where she managed national portfolios related to water policy, water law and governance, institutional development and environmental water requirements. She chaired the Scientific and Technical Review Panel of the Ramsar Convention on Wetlands from 2005 to 2012, and concurrently was a member of the Panel’s international working group on water resources and river basin management. Heather’s local work in Washington State has focused on water management and agriculture in Whatcom County, helping farmers and planners find ways to protect and enhance both working farmlands and water resources. Heather joined the Vegetable Seed Pathology team at the WSU Mount Vernon NWREC in November 2019, where she is the Project Manager for a $4 million grant from the USDA NIFA Specialty Crops Research Initiative titled ‘Stop the rot: Combating onion bacterial diseases with pathogenomic tools and enhanced management strategies’. In her spare time, Heather enjoys hiking, sailing the coastal waters with her family, and exploring local trails with her horse.

Paul MorganPaul Morgan

Agricultural Research Tech II with Dr. Lindsey du Toit

Paul Morgan, Agricultural Research Technologist II, joined the Vegetable Seed Pathology program of Lindsey du Toit at the WSU Mount Vernon NWREC in January 2018. He assisted with a Washington State Department of Agriculture Specialty Crop Block Grant (No. K1769) investigating the role of mycorrhizae in growth and disease suppression in onion and carrot crops in the Columbia Basin. Paul worked previously with Dr. Debbie Inglis’ Vegetable Pathology program at the WSU Mount Vernon NWREC. In 2019 Paul became an Agricultural Research Technologist II in Lindsey’s program.

Natalia Moroz
Research Associate with Kiwamu Tanaka
(Visit her Profile Link for more information)

Shannon SantoyShannon Santoy
Scientific Assistant with Ken Eastwell

Shannon performs and validates nucleic acid based testing protocols to support the regulatory mission of our program. She also develops molecular diagnostic methods to support the virology research programs in fruit trees, grapevines and hop.

24106 N. Bunn Rd., Prosser, WA 99350
(509) 786-9558

Hongyan ShengHongyan Sheng
Associate in Research with Tim Murray


Meinan WangMeinan Wang
Reseach Associate with Xianming Chen

233 PBS, Pullman, WA 99164
(509) 335-1596

Wei Wei
Research Associate with Weidong Chen

Elmer WilcowskiElmer Wilcowski
Nursery Worker with Ken Eastwell

Elmer maintains the greenhouses and orchards that support the National Clean Plant Network for fruit trees.

24106 N. Bunn Rd., Prosser, WA 99350
(509) 786-9317

Chuntao YinChuntao Yin
Research Associate with Tm Paulitz

309 Johnson Hall, Pullman, WA 99164
(509) 335-6480

Ying ZhaiYing Zhai
Research Associate with Hanu Pappu

I received PhD in Plant Pathology from Washington State University in 2014. My research focus is on tospovirus-plant interactions.