Xanthomonas translucens pv. translucens found in British Columbia, Canada
In 2021, symptoms of bacterial leaf streak were observed on barley (Hordeum vulgare) in several experimental plots (‘barley stripe rust nursery’) in Vancouver, British Columbia, Canada. Symptomatic leaf samples were tested in the laboratory (PCR, sequencing, DNA-DNA hybridization, phylogenomic analysis), and results showed the presence of Xanthomonas translucens pv. translucens (EPPO A2 List). Koch’s postulates were verified by greenhouse inoculation experiments followed by re-isolation of the bacterium. According to the authors, this is the first time that Xanthomonas translucens pv. translucens is reported on barley in British Columbia.
Sources
Beutler J, Li T, Roman-Reyna V, Fleitas MC, Bamrah R, Jacobs JM, Kutcher HR, Tambong JT, Brar GS (2023) First report of bacterial leaf streak of barley (Hordeum vulgare) caused by Xanthomonas translucens pv. translucens in British Columbia, Canada. Plant Disease (early view). https://doi.org/10.1094/PDIS-09-22-2112-PDN