Rizzo, David M.
Professor of Plant Pathology
Office Phone: 530-754-9255
B.S. James Madison University, VA 1983 Biology
M.S. University of New Hampshire, Durham 1986 Plant Pathology
Ph.D. University of Minnesota, St. Paul 1993 Plant Pathology
Area of Specialization
Mycology; forest pathology and fungal diseases of woody plants; fungal ecology and systematics.
Currently, the major focus of the lab is to study an epidemic of a new species of Phytophthora in coastal areas of California (http://www.suddenoakdeath.org/). Research projects range from basic studies on the biology and ecology of Phytophthora to numerous management related issues. Another project is looking at the spatial distribution of pathogens and insects and their impact on plant community development in mixed-conifer forests in the Sierra Nevada as part of the Teakettle Ecosystem Experiment (http://teakettle.ucdavis.edu/). I have recently become involved with a project funded as part of the NSF Biocomplexity Initiative to study "Common Mycorrhizal Networks [CMN]". We are studying how mycorrhizal fungi and plant roots form networks which are influenced by spatial and temporal distributions of soil resources (http://fungus.ucdavis.edu/index.php).
Fichtner EJ, SC Lynch, DM Rizzo. 2009. Survival, dispersal, and potential soil-mediated suppression of Phytophthora ramorum in a California redwood-tanoak forest. Phytopathology 98: 99: 608-619
Smith ME, GW Douhan, AK Fremier, DM Rizzo. 2009. Are true multihost fungi the exception or the rule? Dominant ectomycorrhizal fungi on Pinus sabiniana differ from those on Quercus species. New Phytologist 182: 295-299
Maloney PE, TF Smith, CE Jensen, J Innes, DM Rizzo, MP North. 2008. Tree mortality, and insect and pathogen response to fire and thinning restoration treatments in an old growth, mixed-conifer forest of the Sierra Nevada, California, USA. Canadian Journal of Forest Research. 38: 3011-3020
Meentemeyer RK, NE Rank, DA Shoemaker, CB Oneal, AC Wickland, K Frangioso, DM Rizzo. 2008. Impact of sudden oak death on tree mortality in the Big Sur ecoregion of California. Biological Invasions 10: 1243-1255.
Davidson, JM, H Patterson, DM Rizzo. 2008. Sources of inoculum for Phytophthora ramorum in a redwood forest. Phytopathology 98:86-866.
Meentemeyer RK, BL Anacker,W Mark, DM Rizzo. 2008. Early detection of emerging forest disease using dispersal estimation and ecological niche modeling. Ecological Applications 18:377-390.
Meentemeyer RK, NE Rank, BL Anaker, DM Rizzo, JH Cushman. 2008. Influence of land-cover change on the spread of an invasive forest pathogen. Ecological Applications 18: 159-171.
Douhan GW, DP Martin, DM Rizzo. 2007. Using the putative asexual fungus Cenococcum geophilum as a model to test how species concepts influence recombination analyses using sequence data from multiple loci. Current Genetics 52: 191-208
Fichtner EJ, SC Lynch, DM Rizzo. 2007. Detection, distribution, survival, and sporulation of Phytophthora ramorum in a California redwood-tanoak forest. Phytopathology 97: 1366-1375
Desprez-Loustau ML, Robin C, Buée M, Courtecuisse R, Garbaye J, Suffert F, Sache I, Rizzo DM. 2007. The fungal dimension of biological invasions. Trends in Ecology and Evolution 22: 472-480
Smith ME, GW Douhan, DM Rizzo. 2007. Ectomycorrhizal community structure in a xeric Quercus woodland as inferred from rDNA sequence analysis of pooled EM roots and sporocarps. New Phytologist 174: 847-863
Rizzo, D. M., M. Garbelotto, and E. M. Hansen. 2005. Phytophthora ramorum: integrative research and management of an emerging pathogen in California and Oregon forests. Annual Review of Phytopathology 43: 309-335.
Rizzo, D. M. 2005. Exotic species and fungi: interactions with fungal, plant and animal communities. Pp. 857-877, In: The Fungal Community, 3rd edition. Edited by J. Dighton, P. Oudemans, and J. White. CRC Press.
Davidson, J. M., A. C. Wickland, H. Patterson, K. Falk, and D. M. Rizzo. 2005. Transmission of Phytophthora ramorum in mixed-evergreen forests of California. Phytopathology 95:587-597.
Douhan, G. W. and D. M. Rizzo. 2005. Phylogenetic divergence in a local population of the ectomycorrhizal fungus Cenococcum geophilum. New Phytologist 166:263-271.
Maloney PE, Lynch SC, Kane SF, Jensen CE, Rizzo DM. 2005. Establishment of an emerging generalist pathogen in redwood forest communities. Journal of Ecology 93: 899-905.
Smith, T., M. North, and D. M. Rizzo. 2005. Patterns of mortality in a mixed-conifer old growth forest in the Sierra Nevada. Forest Science 51: 266-275.