Citrus canker, caused by Xanthomonas citri subsp. citri (Xcc), is severely damaging to the global citrus industry. Targeted editing of host disease-susceptibility genes represents an interesting and potentially durable alternative in plant breeding for resistance. Here, we report improvement of citrus canker resistance through CRISPR/Cas9-targeted modification of the susceptibility gene CsLOB1 ...

Pitch canker, caused by the fungus Gibberella circinata (anamorph = Fusarium circinatum), was first identified in 1945 as a disease of pines in North Carolina (7). Pitch canker now occurs throughout the southeastern United States where it remains a chronic problem in plantations, nurseries, and seed orchards (2,3). In California, a pitch canker infestation that was first recognized in 1986 has ...

Burkholderia andropogonis was first described as the causal agent of stripe disease of sorghum and leaf spot of velvet bean in 1911 (20); at that time, it was classified as Pseudomonas andropogonis. Pseudomonas woodsii was also described, in the same publication, as an important pathogen of carnation. These two pathogens were reclassified to the genus Burkholderia based on DNA-rRNA hybridizatio...

To study impacts of sudden oak death (SOD), a lethal bark canker disease caused by Phytophthora ramorum, we established permanent plots in Sonoma County forest types at risk of SOD. Baseline stand and tree health data were collected in 2001 and the plots were reassessed in 2004. The 250 plots (0.02 ha each) were located at 11 study locations in stands containing Quercus agrifolia, Q. kelloggii,...

Control of citrus canker (caused by Xanthomonas citri subsp. citri) on grapefruit is required to reduce blemishes on fresh fruit. The objective was to evaluate formulations, rates, duration of residues for copper materials, combinations of copper materials and streptomycin, and application timing for effective canker control on young, fruiting grapefruit trees. Copper applications were made at ...

Bacterial canker of tomato is the most damaging one and responsible for causing 70% yield losses each year. Green synthesis nanoparticles has ushered in a new research field known as green nanotechnology emerged vital tool management plant diseases. In comparison to other conventional techniques, various was found be eco-friendly, low-cost profitable resulting more stable synthesized materials....

Citrus canker disease caused by Xanthomonas citri subsp. citri (Xcc) is one of the most devastating diseases affecting the citrus industry worldwide. In our previous study, the canker-resistant transgenic sweet orange (Citrus sinensis Osbeck) plants were produced via constitutively overexpressing a spermidine synthase. To unravel the molecular mechanisms underlying Xcc resistance of the transge...

Citrus canker (CC), caused by one of the most destructive subfamilies bacterial phytopathogen Xanthomonas citri subsp. Citri (Xcc), poses a serious threat to significantly important citrus fruit crop grown worldwide. This has been subject ongoing epidemiological and disease management research. Currently, five different forms have identified CC, in which Canker A (Xanthomonas citri) being harmf...