Vol. 61 No. 1 (2022)
Articles

Copper resistance mechanisms in plant pathogenic bacteria

Xiaojing FAN
Fujian University Key Laboratory for Plant-Microbe Interaction, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002
Tahira Saleem
Fujian University Key Laboratory for Plant-Microbe Interaction, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002
Huasong ZOU
Fujian University Key Laboratory for Plant-Microbe Interaction, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002
Bio
Published May 13, 2022
Keywords
  • Resistance systems,
  • stress conditions,
  • signalling pathways,
  • bacterial copper resistance,
  • plant immunity
How to Cite
[1]
X. FAN, T. SALEEM, and H. ZOU, “Copper resistance mechanisms in plant pathogenic bacteria”, Phytopathol. Mediterr., vol. 61, no. 1, pp. 129-138, May 2022.

Abstract

Copper is an essential element for microbes as it is involved in many redox reactions. Numerous resistance systems have been evolved in microbes to maintain copper homeostasis under copper stress conditions. These systems are responsible for the influx and efflux of copper ions in the cells. In phytopathogenic bacteria, copper ions play essential roles during disease development in plants. Copper-based chemicals are extensively used for control of diseases caused by bacteria, which leads to induced pathogen resistance derived from various copper resistance systems. Previous studies have shown that copper ions are harnessed by host plants to protect against bacterial infections, triggering immune responses through activation of defence signalling pathways. Thus, it was anticipated that bacterial copper resistance could play an alternative role in adaptation to plant immunity. This review summarizes current knowledge of copper resistance systems in plant pathogenic bacteria, which may provide a new perspective of molecular mechanisms associated with bacterial adaptation in host plants.

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