期刊
MICROBIOLOGICAL RESEARCH
卷 156, 期 2, 页码 191-194出版社
URBAN & FISCHER VERLAG
DOI: 10.1078/0944-5013-00102
关键词
Pseudomonas corrugata; disease control; bioassay; antibiotic resistance; Sikkim Himalaya
类别
Two strains of Pseudomonas corrugata, (I and 7), isolated from subtropical and temperate soils in Sikkim Himalaya, respectively, were subjected to Petri-dish as well as plant-based bioassay to examine their potential for disease suppression against three major pathogens of maize. A mixture of Pythium ultimum, P. arrhenomanes and Fusarium graminearum was introduced in the soil; maize seed inoculated with one of the two strains of Pseudomonas corrugata (I or 7) were sown in pots containing such soil. The bacterial inoculation resulted in significant disease suppression as well as growth promotion of seedlings. The bacterial strains were also evaluated for their intrinsic antibiotic resistance against a range of concentrations of ten antibiotics. While the bacteria were found to be sensitive to gentamycin and rifampicin, they exhibited resistance against ampicillin, carbenicillin and penicillin, even at high concentrations.
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