Population heterogeneity of walnut's bacterial diseases agent in Ukraine to sensitivity to various copper compounds

DOI: https://doi.org/10.7124/FEEO.v38.1795
Keywords: walnut's bacterial diseases agents, copper compounds, population heterogeneity

Abstract

Aim. The investigation of population heterogeneity of walnut's bacterial diseases agents in Ukraine to sensitivity to various copper compounds. Methods. The studies used microbiological and statistical research methods. Results. The population heterogeneity of walnut's bacterial diseases agents in Ukraine to sensitivity to various copper compounds was revealed. The most sensitive to all copper compounds is the pathogen of bacterial burn, brown apical necrosis and vertical ulcerative cancer of walnut Xanthomonas arboricola pv. juglandis. In contrast, the polyphages Agrobacterium tumefaciens (walnut root cancer) and Pseudomonas syringae pv. syringae (walnut leaf spot) have a lower level of sensitivity to various chemical copper compounds. All bacterial diseases agents were most sensitive to the combination of copper oxychloride (861 g/kg) and copper hydroxide (236.64 g/l) and copper sulfate. In contrast, pathogenic for walnut bacteria are not sensitive to copper oxychloride (861 g/kg) and vary by sensitivity to copper phosphonate (250 g/l) and copper hydroxide (236.64 g/l). Conclusions. The results obtained by us are only an initial step in studying the population heterogeneity of walnut's bacterial diseases agents in Ukraine. The research may be useful for farmers in developing protection systems for walnut plantations.

References

Cesari E., Marocchi F., L'Aurora A., Pucci N., Scala V., Loreti S, Scortichini M. Occurrence of copper-resistant Pseudomonas syringae pv. syringae strains isolated from rain and kiwifruit orchards also infected by P. s. pv. actinidiae. European Journal of Plant Pathology. 2017. Vol. 149, No. 4. P. 1–16. https://doi.org/10.1007/s10658-017-1246-1.

Dankevych L. A. Identification of causative agents of brown bacterial spotting of lupine by the presence of the syringomycin secretion gene (syr D). Factors of experimental evolution of organisms. 2019. Vol. 25. P. 122–125. https://doi.org/10.7124/FEEO.v25.1151. [in Ukrainian]

Dankevych L. A., Zarudniak M. I., Patyka V. P., Dankevych A. E., Mychnik F. V. Phenotypical characteristics of walnut's (Juglans sp.) bacterial diseases agent. Mikrobiolohichnyi Zhurnal. 2024. Vol. 86, No. 5. P. 20–31. https://doi.org/10.15407/microbiolj86.05.020.

Fan X., Saleem T., Zou H. Copper resistance mechanisms in plant pathogenic bacteria. Phytopathologia Mediterranea. 2022. Vol. 61, No. 1 P. 129–138. https://doi.org/10.36253/phyto-13282.

Kolleh R. L., Basım H. Investigation of resistance of some lettuce varieties against lettuce bacterial leaf spot disease agent Xanthomonas hortorum pv. vitians and the susceptibility of the disease agent to copper. Black sea journal of agriculture. 2024. Vol. 7, No. 6. P. 603–612. https://doi.org/10.47115/bsagriculture.1501121.

Patyka V. P., Pasichnik L. A., Gvozdiak R. I., Petrychenko V. F., Korniychuk. O. V., Kalinichenko A. V., Butsenko L. M., Zhytkevich N. V., Dankevich L. A. Litvinchuk O. O., Kyrylenko L. V., Gulyaeva G. B., Hnatyuk T. T., Kharkhota M. A. Tomashuk O. V. Phytopathogenic bacteria. Methods. Vinnytsia : Vindruk LLC, 2017. 432 p. [in Ukrainian]