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Articles by F. Sharifi
Total Records ( 3 ) for F. Sharifi
  S.A. Ayatollahi Mousavi , E. Khalesi , G.H. Shahidi Bonjar , S. Aghighi , F. Sharifi and F. Aram
  Rapid identification of Candida species in clinical laboratory is becoming increasingly important since the incidence of Candidiasis continues to rise as the hospital surveys show. Molecular techniques utilizing amplification of target DNA provide quick and precise methods for diagnosis and identification of Candida species. In this study, using universal primers, the ITS1-ITS4 region was amplified. The restriction enzyme MspI digests this region and was used to identify of C. albicans, C. glabrata, C. krusei, C. tropicalis and C. guilliermondii. Electrophoretically, ribosomal DNA of C. guilliermondii produced three bands whereas the other species gave two bands upon digestion. Accordingly these enzymes behave as valuable application tools in molecular diagnosis of Candida species in Candidiasis maladies and can be substituted with the classical diagnosis of the pathogen.
  F. Sharifi , P. Rashid Farrokhi , G.H. Shahidi Bonjar , S. Aghighi , F. Aram and E. Khalesi
  Actinomycetes enhance soil fertility and have antagonistic activity against wide range of plant root-pathogens. These micro organisms were isolated from agricultural soils of Kerman and Fars Provinces as pure cultures. Pythium aphanidermatum, causes damping off and root and stem rots of cucurbits worldwide. From 178 Actinomycetes isolates, 43 inhibited growth of the pathogen in culture plates and two of the most active isolates exhibited biological control of the pathogen under greenhouse conditions. When plants were grown in sterile soil mix and treated both with Actinomycetes and the pathogen, the number of healthy plants increased dramatically and the symptoms on diseased plants were less severe in comparison with seedlings treated with the pathogen alone. From the collected data it was well conclusive that in greenhouse tests, soil applications of Actinomycetes controlled causal agent of damping off in cucurbit seedlings. Antifungal activity was of fungicidal type on the pathogen mycelia. Regarding biotechnological implications, the results indicate that the active isolates can be investigated for use as biofertilizers, biofungicides and use in future development of recombinant DNA in cucurbits bearing elevated resistance to damping off. Field trials of the active isolates are under investigation.
  F. Sharifi , G.H. Shahidi Bonjar , S. Aghighi , P. Rashid Farrokhi , E. Khalesi , M.J. Mahdavi and H. Taraz
  Pythium aphanidermatum, the major phytopathogen induce damping off, root and stem rots, blights of grasses and fruit and in greenhouse cucurbits growing all areas of the world. Soil Actinomycetes including 178 isolates were assayed for assessing antagonistic activity against P.aphanidermatum. From tested isolates, 43 isolates were effective but 2 isolates strains 311 and 321 showed high anti-fungal activity revealed by bioassays in agar disk and well diffusion methods. For further biological characterizations, the active strains were grown in submerged cultures to determine growth curve and prepare crude extracts. Preliminary greenhouse studies indicated that amending soil with these strains, 311 and 321; reduce crop losses due to the pathogen. Antifungal activities of both antagonists were of fungicidal type on pathogen with complete inhibitory effects.
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