Note: Evaluation of antibacterial activity of essential oil ofRosa damascena onErwinia amylovora
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Significant antibacterial activity was observed in the essential oil (E.O.) ofRosa damascena Mill. and the Minimum Bactericidal Concentration (MBC) of the E.O. was determined as 1386.5 µg ml−1 forErwinia amylovora, the causal agent of fire blight disease. Ooze formation on immature pears and lesion formation in artificially inoculated shoots were completely (100%) prevented by the essential oil ofR. damascena (1500 µg ml−1), essential oil ofThymbra spicata var.spicata (500 µg ml−1) and streptomycin (100 µg ml−1). Copper oxychloride plus maneb significantly reduced ooze formation and lesion formation, but the control was less than that obtained with the essential oils or streptomycin. The essential oil ofR. damascena may be a useful natural bactericide for the control of the fire blight pathogen,E. amylovora.
Key wordsRosa damascena essential oil thyme attar of rose Erwinia amylovora fire blight Isparta Turkey
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