Xanthomonas arboricola pv. pruni is a bacterial disease of almost all Prunus. The first complete genome was submitted to NCBI in 2019. Available genomes place it as a member inside Xanthomonas arboricola.
Hosts Almost all Prunus spp.
Distribution Unknown in stonefruit in California until detection in Sacramento and northern San Joaquin Valley in the spring of 2013. it is still restricted to those two areas. Also found in almond cultivation in Victoria, Australia.
Detection Palacio-Bielsa et al., 2011 provides a SYBR Green I-based assay.
Management Copper and mancozeb are recommended in California for almonds and have served well elsewhere. No pesticides are registered for almonds anywhere in Australia.
Phage therapy has been heavily studied for X. pruni and some treatments have been very successful. Civerolo & Keil performed several experiments in the 1970s with showing that peach and apricot were protected by external applications of solution.
Resistance Resistance to copper has occurred. No copper resistance in California. Rotation or tank mixing is recommended to forestall resistance.
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