PJB-2017-745
Antimicrobial Activities of some Plant Extracts against Phytopathogenic Fungi and Clinical Isolates in Iran
Mohammad Reza Majid Khoshkholgh Pahlaviani
Abstract
BACKGROUND: Natural products from plants as environmentally safe option have received attention for controlling various phytopathogenic diseases. In this study the antimicrobial activities of three plant alcoholic and aqueous extracts (Salvia officinalis, Peganum harmala and Oxalis corniculata) against phytopathogenic fungi (Ten fungi associated with diseased tomato fruits) and clinical isolates (Ten bacteria and Candida albicans) in Iran were investigated. METHODS: After phytochemical screening of plant extracts, antimicrobial activity of the extracts against phytopathogenic fungi and clinical isolates was assayed by standards methods for determination of MIC and MBC. RESULTLTS: Results of the phytochemical screening of alcoholic and aqueous leaf extracts of the selected three plants revealed the presence of saponins, steroids, tannins, glycosides, alkaloids and flavonoids. All three extracts of the plants tested showed varying degree of antimicrobial activities against phytopathogenic fungi and clinical isolates. Generally, the methanol extracts were more active than other extracts for S. officinalis and P. harmala, while for O. corniculata water extract was more activity. CONCLUSIONS: The study has been able to establish and document the important medicinal plants used in management of phytopathogens and infectious diseases in Iran and how they are used.
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