Collaboration for Plant Pathogen Strain Identification
Collaboration for Plant Pathogen Strain Identification
Collaboration for Plant Pathogen Strain Identification
University of California
Collaboration for Plant Pathogen Strain Identification

CPPSI Working Group Members

Philip Brown
Sakata Seed America
Philip received B.S. degree in Crop Science – Vegetable Crops from California Polytechnic State University at San Luis Obispo and his M.S. degree in Vegetable Crops – Genetics and Crop Improvement from University of California at Davis. After receiving his M.S. degree Philip worked as a post graduate researcher in the Plant Pathology Department at UC Davis for two years before being hired by Alf Christianson Seed Co. as a Research Associate to develop and implement disease screens for radish, beets, and Swiss chard. More recently the company has merged with Sakata Seed America, Inc. and Philip is now Technical Services Manager – PNW overseeing a seed lab, breeder support, seed health, extension, and diagnostic activities at the Pacific Northwest facility.

Stephanie Greene
Stephanie Greene
Stephanie is a Supervisory Plant Physiologist and lead scientist of the Plant Preservation Program at the USDA Agricultural Research Service Plant and Animal Genetic Resources Preservation Unit. Dr. Greene is responsible for providing long term storage of the USDA National Plant Germplasm System Base seed collection. The Base collection serves as a safety back up of our Nation’s seed collection, and contains over 560,000 accessions. We also provide safety back up for domestic and international seed and microbe collections, including housing and distributing the CPPSI plant pathogen sets.  Dr. Greene’s main research focus is the conservation of crop wild relative species that are native to the United States. These wild species are important genetic resources that can be used by breeders to develop productive, climate-resilient crops. She also leads a team assessing the escape of genetically-engineered genes from alfalfa into the environment to better understand transgene dispersal and possible strategies to prevent escape. 

Phyllis Himmel, CPPSI
Phyllis Himmel
Phyllis joined the UCD Seed Biotechnology Center in July 2015 to lead the seed industry funded Collaboration for the Identification of Plant Pathogen Strains (CPPSI). She brings 25 years of experience in disease resistance discovery and development, research leadership, product discovery and development in the Agricultural Sciences. Phyllis received her MS and PhD in Plant Pathology from the University of Arizona. After a 3 year USDA/ARS Post Doc researching WSBMV in hard red winter wheat at the University of Illinois, Phyllis joined the Asgrow (later Seminis, Monsanto) Vegetable Seed Company as a research pathologist. She established and led a program to identify and develop resistance in vegetables to viral pathogens, eventually leading the global pathology team of 64 scientists and staff as Director of Research Pathology. While at Marrone Bio Innovations, Phyllis held personnel and product management roles in the discovery and development of plant and microbe based biopesticides.

Nicki Phillips, Enza Zaden
Nicki Phillips
Enza Zaden
Nicki obtained a BS in Botany from Oregon State University and an MS in Plant Pathology from Kansas State University. She has over 30 years of experience in the vegetable seed industry. In her current position with Enza Zaden Research she is working with breeders to develop disease resistance in lettuce, peppers and onion. 

Mark Ricker, Bayer
Mark Ricker
Mark is a tomato pathologist with Bayer, and manages projects of disease resistance globally. He has worked with vegetable diseases since obtaining an M.S. degree in 1984 from North Carolina State University, when he started with the Campbell Institute for Research and Technology. Mark worked for H.J. Heinz from 1990 to 2000.

Staci Roserberger, Monsanto
Staci Rosenberger
Staci is the North America Plant Health Lead for the vegetable division of Monsanto. She received her BS from the University of California, Davis in Plant Biology and her MS degree from Iowa State in Seed Technology and Business. Staci has a diverse plant pathology background with experience in post-harvest diseases of fruits and vegetables, biopesticide efficacy testing, seed health testing and disease resistance discovery and development. She started her career with AgraQuest, Inc. conducting discovery and quality assurance assays for novel bio-pesticide compounds. Staci later moved to Syngenta where she managed seed health testing for seedborne diseases of small-seeded vegetable crops and developed diagnostic assays for a wide variety of vegetable pathogens. In her current role, she leads a team that supports product discovery and development through disease resistance phenotyping and pathogen diagnosis.

Craig Sandin, Plant Pathologist
Craig Sandlin
Syngenta Seeds
As a plant pathologist working with Syngenta Seeds, Craig’s work focuses on supporting the development of disease resistant vegetable varieties. Additional activities include the management of Syngenta’s US Vegetable Pathology group, diagnosis of plant diseases, and seed health work. Craig received his Ph.D. in Plant Pathology from the University of California, Riverside, and did a post doc at the Plant Pathology Department at the University of Nebraska, Lincoln.

John Schoenecker, HM.Clause
John Schoenecker
After graduating with a degree in Horticulture and Soil Science from the University of Minnesota, John went to work for Harris Moran Seed Company and has spent the past 28 years in Sales, Marketing and Legal Affairs. In 2009, John assumed his current duties as the Director Intellectual Property AMPA for HM.CLAUSE. During his career with HM.CLAUSE, John has worked in many areas of the seed business, from direct sales and product management to legal and regulatory. Involved in marketing and product management for nearly a decade, he helped to bring Harris Moran into the world of the web with PC-based product data systems. Prior to his current position as Director of Intellectual Property, AMPA, he spent eight years working in seed-related areas of regulatory and legal affairs, such as contract development and product claim prevention. 

Elisabetta Evivoda, HM.Clause
Elisabetta Vivoda
Elisabetta manages discovery projects at HM.CLAUSE that are aimed at the identification of genetic resistance to diseases that have an economic impact on vegetable production. She has been with the company in the pathology department for 25 years and earned her Master’s in Plant Pathology at UC Davis.

Kimberly Webb, USDA-ARS
Kimberly Webb
Kimberly is a Research Plant Pathologist with the Soil Management and Sugar Beet Research Unit of USDA-ARS located in Fort Collins, CO.  She has a B.S. in Agronomy from Colorado State University and earned her doctoral degree from Kansas State University in Plant Pathology. After earning her PhD, Kimberly gained experience working with the vegetable seed industry when she joined STA Laboratories and served as their Seed Health Manager. While at STA Laboratories she was responsible for the development and validation of seed health assays for vegetable and row seed crops.  In 2008, Kimberly joined USDA-ARS where she now works on characterizing fungal plant pathogens and their interactions with their hosts. Her role with the CPPSI includes serving as the liaison to the American Phytopathological Society hosting committee (Germplasm and Collections), assisting with the distribution of pathogen differential sets and the development of new fungal differential sets.

Webmaster Email: