Two commercial woody ornamental nurseries were sampled for the presence of
Phytophthora species over a period of three years between 2011 and 2014. The samples …

Management of invasive species requires confidence in the detection methods used to
assess expanding distributions, as well as an understanding of the dominant modes of …

There are four recognized clonal lineages of the pathogen Phytophthora ramorum. The two
major lineages present in North America are NA1 and NA2. With a few exceptions, NA1 is …

This thesis explored the fungal communities of arbuscular mycorrhizal-dominated Cedar-
Hemlock (CH) and ectomycorrhizal-dominated Hemlock-Amabilis fir (HA) forests on northern …

In July 2012, we collected a rhododendron var. Trilby with twig dieback symptoms in the
lower canopy, consistent with the disease “ramorum blight” caused by Phytophthora …

The inoculum threshold for Phytophthora ramorum in irrigation water required for infection of
plant material was investigated using a novel pressurized device designed to deliver …

Propagules of Phytophthora ramorum, the causal agent of sudden oak death (SOD) and
ramorum blight, can be recovered from infested stream and nursery irrigation runoff using …

Oak trees bring in more than $500 million to California alone from timber. Plaguing this
milliondollar industry is Sudden Oak Death (SOD), caused by Phytophthora ramorum, an …