채소 재배에서 사용하는 농용 항생제에 대한 주요 식물병원세균의 저항성 평가open accessEvaluation of Resistance of Phytopathogenic Bacteria to Agricultural Antibiotics
- Authors
- 김지연; 백광현; 이선영
- Issue Date
- Jun-2023
- Publisher
- 한국식물병리학회
- Keywords
- Agricultural antibiotics; Antibiotic resistance; Phytopathogenic bacteria; Validamycin A
- Citation
- 식물병 연구, v.29, no.2, pp 168 - 173
- Pages
- 6
- Journal Title
- 식물병 연구
- Volume
- 29
- Number
- 2
- Start Page
- 168
- End Page
- 173
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/68104
- DOI
- 10.5423/RPD.2023.29.2.168
- ISSN
- 1598-2262
2233-9191
- Abstract
- Agricultural antibiotics are widely used to inhibit the growth of phytopathogenic bacteria involved in plant diseases. However, continuous antibiotic overuse in crop production may lead to the development of antibiotic resistance in phytopathogenic bacteria. This study was conducted to evaluate the resistance to three different agricultural antibiotics (oxytetracycline+streptomycin, streptomycin, and validamycin A) in 91 strains of phytopathogenic bacteria including Pectobacterium carotovorum, Pseudomonas syringae pv. actinidiae, Clavibacter michiganensis subsp. michiganensis, C. michiganensis subsp. capsici, and Xanthomonas arboricola pv. pruni. Bacterial growth in the presence of various concentrations of validamycin A was also assessed spectrophotometrically by analyzing the optical density. All strains did not grow when the cells were exposed to oxytetracycline+streptomycin or 100× of streptomycin. However, among the 91 strains, 4% and 2% strains showed bacterial growth at the concentrations of 1× and 10× of streptomycin, respectively. Furthermore, 97%, 93%, and 73% strains were resistant to the 1×, 10×, and 100× of validamycin A, respectively, and especially, P. carotovorum contained the highest resistance to the validamycin A. Minimum bactericidal concentration values of validamycin A did not correlate with the patterns of agricultural antibiotic resistance. Further studies are needed to understand the incidence and development of antibiotic resistance in phytopathogenic bacteria.
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