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Articles 31 - 33 of 33
Full-Text Articles in Biology
Anti-Genotoxic Effect Of Ascorbic Acid On Mutagenic Dose Of Three Alkylating Agents, Bülent Kaya
Anti-Genotoxic Effect Of Ascorbic Acid On Mutagenic Dose Of Three Alkylating Agents, Bülent Kaya
Turkish Journal of Biology
The antimutagenic effect of ascorbic acid (vitamin C) was investigated by using the Drosophila wing spot test. In this assay, 3-day-old transheterozygous larvae for the multiple wing hair (mwh, 3-0.3) and flare (flr, 3-38.8) genes were treated with 3 direct acting mutagens: ethyl methanesulfonate (EMS), methyl methanesulfonate (MMS) and N-nitroso N-ethylurea (ENU). The results obtained from 3 reference mutagens were clearly genotoxic in the Drosophila wing somatic mutation and recombination test. The calculated concentration of ascorbic acid as recommended dietary allowance (RDA) did not induce the frequency of the mutant clones recorded. When co-treatment experiments with ascorbic acid were carried …
Isolation Of Trichoderma Spp. And Determination Of Their Antifungal, Biochemical And Physiological Features, Çi̇ğdem Küçük, Meri̇h Kivanç
Isolation Of Trichoderma Spp. And Determination Of Their Antifungal, Biochemical And Physiological Features, Çi̇ğdem Küçük, Meri̇h Kivanç
Turkish Journal of Biology
It is well known that Trichoderma spp. can be used as a biological control agent. In this study, Trichoderma isolates were obtained from 31 different Eskisehir soil samples. The biocontrol and antifungal effects of these isolates against various plant pathogen fungi were determined. We found that all filtrates of Trichoderma harzianum T9, T10, T15 and T19 were effective against plant pathogens Fusarium culmarum, F. oxysporum, F. moniliforme, Rhizoctonia solani, Sclerotium rolfsii, Gaeumannomyces graminis var. tritici and Drechslera sorokiniana. Among these isolates, T. harzianum T19 showed a wide range of inhibitory effects on plant pathogens. F. oxysporum was found to be …
Antimicrobial Activity Of Viscum Album L. Subsp. Abietis (Wiesb), Ömer Ertürk, Hati̇ce Kati, Nuretti̇n Yayli, Zi̇hni̇ Demi̇rbağ
Antimicrobial Activity Of Viscum Album L. Subsp. Abietis (Wiesb), Ömer Ertürk, Hati̇ce Kati, Nuretti̇n Yayli, Zi̇hni̇ Demi̇rbağ
Turkish Journal of Biology
Viscum album L. subsp. abietis (Wiesb.) (Loranthaceae) is extensively used for treatment in traditional medicine. This plant was collected in the region of Artvin, northern Turkey. Different concentrations of n-hexane extract were tested using the agar diffusion technique against 6 bacteria (Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Enterobacter cloacae and Proteus vulgaris), and 1 fungus (Candida albicans). We determined that fractions 6 and 7 of n-hexane extract of V. album subsp. abietis showed antimicrobial activity against the micro-organisms tested.