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<p>The most important cereal bacterial disease worldwide is bacterial leaf streak (BLS), which is caused by a seed-borne pathogen, <i>Xanthomonas translucens</i>. The influence of BLS disease on wheat production and other important cereals is becoming more significant as a result of the lack of information and appropriate management procedures. Finding a suitable approach to manage this disease has a high management value. Therefore, the present study aimed to investigate the efficacy of copper-based compounds on the pathogen causing BLS disease. Copper-based compounds (Copper oxychloride, Bordeaux mixture, Cobre, and Copper phite) were investigated against growth, biofilm formation, and bacterial motilities (swimming, twitching, and swarming) <i>in vitro</i>. Furthermore, the recommended concentration (3000&#xa0;ppm) was evaluated for its capacity to prevent or curate the BLS disease an <i>in planta</i> bioassay. This bioassay was repeated twice. The findings indicated that Cobre and Copper oxychloride were the most effective copper compounds. The growth, biofilm formation, and motility of pathogenic bacteria were significantly inhibited<i> in vitro</i> by these two compounds at concentrations higher than 1000&#xa0;ppm. In addition, Copper oxychloride and Cobre at 3000&#xa0;ppm concentration as pre-inoculation treatment (preventive treatment) decreased the disease severity up to 68.90 and 68.87% in the first <i>in planta</i> bioassay, and 75.67 and 74.98% in the second <i>in planta</i> bioassay, respectively. Additionally, copper-based compounds, especially Cobre at a concentration of 3000&#xa0;ppm in pre-inoculation treatment, significantly improved wheat growth parameters compared to the infected control. The results revealed that Cobre and Copper oxychloride were effective in managing BLS disease. In addition to using healthy seeds as a primary approach to managing the disease, the effective compounds found in this study can be used to protect wheat against the BLS pathogen.</p>

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Efficacy Assessment of Some Copper Compounds on the Bacterial Leaf Streak Pathogen, Xanthomonas translucens

  • 期刊论文

  • 发表日期：

    2025年7月11日

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  • Tahereh Shohanipor,
  • Rouhallah Sharifi,
  • Saman Hosseini

摘要

The most important cereal bacterial disease worldwide is bacterial leaf streak (BLS), which is caused by a seed-borne pathogen, Xanthomonas translucens. The influence of BLS disease on wheat production and other important cereals is becoming more significant as a result of the lack of information and appropriate management procedures. Finding a suitable approach to manage this disease has a high management value. Therefore, the present study aimed to investigate the efficacy of copper-based compounds on the pathogen causing BLS disease. Copper-based compounds (Copper oxychloride, Bordeaux mixture, Cobre, and Copper phite) were investigated against growth, biofilm formation, and bacterial motilities (swimming, twitching, and swarming) in vitro. Furthermore, the recommended concentration (3000 ppm) was evaluated for its capacity to prevent or curate the BLS disease an in planta bioassay. This bioassay was repeated twice. The findings indicated that Cobre and Copper oxychloride were the most effective copper compounds. The growth, biofilm formation, and motility of pathogenic bacteria were significantly inhibited in vitro by these two compounds at concentrations higher than 1000 ppm. In addition, Copper oxychloride and Cobre at 3000 ppm concentration as pre-inoculation treatment (preventive treatment) decreased the disease severity up to 68.90 and 68.87% in the first in planta bioassay, and 75.67 and 74.98% in the second in planta bioassay, respectively. Additionally, copper-based compounds, especially Cobre at a concentration of 3000 ppm in pre-inoculation treatment, significantly improved wheat growth parameters compared to the infected control. The results revealed that Cobre and Copper oxychloride were effective in managing BLS disease. In addition to using healthy seeds as a primary approach to managing the disease, the effective compounds found in this study can be used to protect wheat against the BLS pathogen.