Phytopathology 2021 Apr 8. Epub 2021 Apr 8.
University of California -Davis, Department of Plant Pathology/Kearney Agric. Res. & Ext. Center, 9240 South Riverbend Ave., Parlier, California, United States, 93648;
Prevalence of latent infections of the canker-causing fungi and species of , and in young shoots of almond, prune and walnut trees in California was studied to test the hypotheses that 1) latent infections accumulate from current-season shoots to 1-year-old shoots in the orchard and 2) there are distinct associations among pathogen taxa present as latent infections in the same shoot. Samples of newly-emerged and 1-year-old shoots were periodically collected in each almond, prune, and walnut orchard for two growing seasons. A real-time quantitative PCR assay was used to quantify latent infection with three parameters: incidence, molecular severity and latent infection index. Read More