Researchers at Michigan State University used a fluorescent isolate of the broad host range pathogen, Phytophthora capsici, to develop a high-throughput, microtiter plate assay for replicated quantification of pathogen growth on plant tissue in real time. This method, which can detect pathogen growth prior to development of symptoms, can assist with screening for disease resistance, mapping of resistance loci, testing efficacy of control measures, or elucidation of fundamental host-pathogen interactions.
CucCAP scientists from the Cornell University research groups of Michael Mazourek and Christine Smart along with Michael Gore’s lab combined linkage mapping and bulked segregant methods for molecular mapping and QTL identification.
Researchers at Cornell University developed squash breeding lines with increased resistance to Phytophthora crown and root rot.
We identified QTLs associated with gummy stem blight resistance in an interspecific F2:3 Citrullus population and developed marker assays for selection of the loci in watermelon.
Plant pathologists from the CucCAP disease management team published two articles focusing on CDM: “Population Analyses Reveal Two Host-Adapted Clades of Pseudoperonospora cubensis, the Causal Agent of Cucurbit Downy Mildew, on Commercial and Wild Cucurbits” & “Diagnostic Guide for Cucurbit Downy Mildew”
The Kousik Lab published “Elucidation of resistance signaling and identification of powdery mildew resistant mapping loci (ClaPMR2) during watermelon-Podosphaera xanthii interaction using RNA-Seq and whole-genome resequencing approach”.
“CucCAP2: Harnessing genomic resources for disease resistance and management in cucurbit crops – bringing the tools to the field”, will focus on the development of advanced genomic, bioinformatic and breeding tools; disease resistant materials; disease management strategies and economic analyses for critical diseases threatening cucurbit production.
In a recent study, CucCAP researchers used a digital imaging technology to evaluate the root systems in 335 watermelon accessions.