Location: Foreign Disease-Weed Science
Project Number: 1920-22000-042-00
Start Date: May 22, 2012
End Date: May 21, 2017
Using specialized containment facilities, we will obtain data in key research areas to assist in managing emerging oomycete pathogens including Phytophthora ramorum, P. kernoviae, P. pinifolia, and Sclerophthora rayssiae var. zeae. To address the need for methods to remediate occurrences of P. ramorum in nurseries in both the Western and Eastern U.S., we will use a novel root inoculation assay to measure the effects of selected chemicals and biological control agents on Phytophthora sp. inoculum levels on host plants and in soil. We will also develop baiting assays to improve methods for detection of Phytophthora sp. in soil and investigate physical and chemical factors that affect detection. We will use a variety of experimental approaches in specialized laboratory and greenhouse facilities to study chlamydospore germination and the potential for seed transmission of P. ramorum, as well as the infectivity of P. kernoviae, P. pinifolia, and Sclerophthora rayssiae var. zeae. Understanding key features of biology, pathology, and epidemiology of the selected pathogens will contribute to development of targeted management practices and recommendations.