Location: Horticultural Crops Research
Project Number: 2072-12220-004-00-D
Project Type: Appropriated
Start Date: May 8, 2012
End Date: May 7, 2017
Objective 1: Identify and characterize key pathogens to pinpoint critical pathogen vulnerabilities and develop targeted disease management strategies. Objective 2: Identify plant germplasm and cultivars of small fruits resistant to economically-important soilborne diseases. Objective 3: Expand knowledge of genomic features and regulatory mechanisms in biological control strains of Pseudomonas spp. to develop more consistent and effective tools for biologically-based disease management.
Determine the prevalence and characterize the population diversity of important soilborne pathogens affecting horticultural crops. Results from this research will identify specific pathogen populations that constrain production of horticultural crops. These populations can be targeted in the future to develop more effective, economical, and environmentally-acceptable disease management systems. Evaluate germplasm of black raspberry (Rubus occidentalis) for resistance to Verticillium wilt, caused by V. dahliae, and germplasm of red raspberry (Rubus ideaus) for resistance to the root lesion nematode, P. penetrans. Our research will identify Rubus genotypes and raspberry cultivars that are resistant to these soilborne diseases, and can be deployed in horticultural production systems in the future. Develop improved knowledge of the mechanisms by which the biological control agent Pseudomonas fluorescens Pf-5 suppresses disease. Results from this research will enable pathologists, horticulturists, and growers to develop more effective and reliable biological controls for soilborne diseases of horticultural crops.