Hyphoderma gummosis is a relatively new disease of lemon trees in the central valley and coastal production areas of California. The causal pathogen Hyphoderma sambuci is a fungus in the Basidiomycota that invades woody tissues through wounds.
We completed a great deal of new and important work during the overall funding period for our work in developing and evaluating transgenic citrus for Citrus tristeza virus (CTV) resistance. This includes biological analyses as well as fundamental studies towards identifying molecular markers of CTV virulence, resistance and infection in transgenic citrus plants. We also broadened our work to include Citrus psorosis virus as it was expressed to us that work on this virus also was important for the California citrus industry.
The purpose is development and management of a genomics database for microarray based detection systems for citrus pathogens. The specific objective was to maintain and update the genomic information as well as conduct comparative analyses for the development of microarray-based pathogen detection systems. The citrus pathogens targeted for this pro-ject were Xylella fastidiosa (Xf), citrus tristeza virus (CTV) and huanglongbing (HLB). The overall goal is to develop a comprehensive bioinformatics data warehouse of citrus pathogens and pests to aid in the disease early diagnosis and pathogen detection.
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