Skip to Main Content
Combining field observations and genetic data to reconstruct the invasion of Phytophthora ramorum in CaliforniaAuthor(s): Peter J.P. Croucher; Silvia Mascheretti; Matteo Garbelotto
Source: In: Frankel, S.J.; Kliejunas, J.T.; Palmieri, K.M.; Alexander, J.M. tech. coords. Proceedings of the sudden oak death fifth science symposium. Gen. Tech. Rep. PSW-GTR-243. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 69-73
Publication Series: General Technical Report (GTR)
Station: Pacific Southwest Research Station
PDF: Download Publication (0 B)
DescriptionAlthough it has been convincingly shown that forest populations of the pathogen Phytophthora ramorum have undergone a significant bottleneck and reproduce exclusively asexually (Ivors et al. 2004, 2006; Mascheretti et al. 2008), objective results showing that nurseries were the original source of the introduction remain elusive (Mascheretti et al. 2008). A previous attempt to define routes of pathogen movement resulted in a largely unresolved network (Mascheretti et al. 2009), showing at best that populations from Santa Cruz and Marin Counties were important sources within California. Previous attempts at reconstructing the entire history of the sudden oak death (SOD) epidemic in California were limited by: 1) incomplete sampling; 2) the inability to include singleton samples; and 3) over-collapsing of non-spatially contiguous, yet genetically similar, samples into large meta-samples that confounded the coalescent analyses. Here, we employ a complete sampling coverage of 832 isolates of P. ramorum (the causative agent of SOD) from 60 California forests, genotyped at nine microsatellite loci.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
CitationCroucher, Peter J.P.; Mascheretti, Silvia; Garbelotto, Matteo. 2013. Combining field observations and genetic data to reconstruct the invasion of Phytophthora ramorum in California. In: Frankel, S.J.; Kliejunas, J.T.; Palmieri, K.M.; Alexander, J.M. tech. coords. Proceedings of the sudden oak death fifth science symposium. Gen. Tech. Rep. PSW-GTR-243. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 69-73.
KeywordsSudden oak death, Phytophthora ramorum, invasive species, tanoak, Notholithocarpus densiflorus, coast live oak, Quercus agrifolia, Japanese larch, Larix kaempferi
- The importance of understory infection by Phytophthora ramorum as a means of primary disease establishment in Oregon forests
- Survival of Phytophthora ramorum following wildfires in the sudden oak death-impacted forests of the Big Sur region
- Sudden oak death effects on the dynamics of dead wood
XML: View XML