Abstract
Moisture deficiency induces various physiological and metabolic responses like stomatal closure and decline in growth rate and photosynthesis [1]. Thymus daenensis is an endemic subspecies of Iran and grows in high altitudes in Zagros mountains range [2]. An experiment was conducted in pot experimental of field, Shahrekord, Iran. Plants were exposed to three drought treatments at before of flowering: (1) 100% field capacity (control), (2) 20% field capacity, (3) 40% field capacity and (4) 60% field capacity until complete flowering. The antibacterial activity of the ethanol extract was tested assays against four pathogens by agar disc diffusion assay. The results of showed that the ethanol extracts from the different treatments studied showed antibacterial activities, with the diameters of the inhibition zone ranging from 8 to 31mm. Increased drought levels not significant reduced antibacterial activity as compared with controls. In the present study we demonstrated, the potent antibacterial activity of T. daenensis extract against foodborn pathogens strains, which justifies the large use of this plant in traditional medicine.
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