1. Department of Environmental Science, Policy and Management, University of California, Berkeley, CA
2. Department of Plant Science, California State University, Fresno, CA
3. Pierce’s Disease Control Program, California Department of Food and Agriculture, Arvin, CA
4. Department of Horticulture, Oregon State University, Corvallis, OR
5. USDA-ARS, Exotic and Invasive Weeds Research Unit, Albany, CA