Skip to Main Content
Early host resistance selection and development should have been a primary management response to the sudden oak death epidemicAuthor(s): Pierluigi (Enrico) Bonello; Richard Sniezko
Source: Proceedings of the seventh sudden oak death science and management symposium: healthy plants in a world with <em>Phytophthora</em>. Gen. Tech. Rep. PSW-GTR-268
Publication Series: General Technical Report (GTR)
Station: Pacific Southwest Research Station
PDF: Download Publication (306.0 KB)
DescriptionIn this presentation I will illustrate the theoretical foundations for a proposed drastic change in how we respond to invasive alien forest pathogens, like Phytophthora ramorum. This new framework is the result of an in-depth analysis of the reasons why effective management of invasive alien phytophagous insects and phytopathogens (PIPs) in forest environments remains an elusive aspiration (Showalter and others 2018). A fundamental reason for why we continue failing is that such PIPs encounter evolutionarily naïve host trees in their new environments, which are incapable of mounting adequate resistance responses. However, it is also true that even the most undefended host populations almost always include individuals that are capable of resisting attack. Such resistance need not be absolute (immunity), but sufficient to ensure survival and reproduction of the target host, so that either natural selection can act directionally upon the traits conferring such resistance, or modern approaches can be brought to bear towards tree improvement programs that are increasingly capable of rapidly selecting and augmenting tree defenses. In the latter case, improved trees can then be used for plantings that are capable of withstanding such invasive alien PIPs. Both in-field directional selection and tree-for-planting improvement programs can be accelerated tremendously by using non-destructive resistance screening techniques such as those we have developed for the coast live oak-P. ramorum pathosystem. In all cases, however, to be a successful management approach, careful target selection, early implementation and sustained support are fundamental. I will illustrate a simplified proposed framework to guide future responses to invasive alien PIPs like P ramorum.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationBonello, Pierluigi (Enrico); Sniezko, Richard. 2020. Early host resistance selection and development should have been a primary management response to the sudden oak death epidemic. In: Frankel, Susan J.; Alexander, Janice M., tech. cords. Proceedings of the seventh sudden oak death science and management symposium: healthy plants in a world with Phytophthora. Gen. Tech. Rep. PSW-GTR-268. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 12.
- Vibrational spectroscopy-based chemometrics to map host resistance to sudden oak death
- Incidence and distribution of resistance in a coast live oak/sudden oak death pathosystem
- Phytophthora ramorum and sudden oak death in California: II. transmission and survival
XML: View XML