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Articles 1141 - 1170 of 1681
Full-Text Articles in Biology
The Effects Of Excessive Mineral Salts And Vitamins On Fiber Cell Thickness In Flax (Linum Usitatissimum L. Cultivar Sarı 85), Hati̇ce Demi̇ray, Ayli̇n Eşi̇z Dereboylu
The Effects Of Excessive Mineral Salts And Vitamins On Fiber Cell Thickness In Flax (Linum Usitatissimum L. Cultivar Sarı 85), Hati̇ce Demi̇ray, Ayli̇n Eşi̇z Dereboylu
Turkish Journal of Biology
The effects of mineral salts on fiber cell thickness in flax (Linum usitatissimum L. cultivar Sarı 85) were investigated in plants grown in medium both rich and poor in mineral salts and vitamins. Three media were investigated: control (MS medium), mineral salt and vitamin deficient MS medium, and mineral salt and vitamin rich MS medium. While chlorophyll a, chlorophyll b, total chlorophyll, and carotenoid pigment content significantly increased in the medium rich in mineral salts and vitamins, they decreased in the medium poor in mineral salts and vitamins. Moreover, the chlorophyll a:chlorophyll b ratio increased in the medium poor in …
Indole-3-Acetic Acid And Gibberellic Acid Production In Aspergillus Niger, Işil Seyi̇s Bi̇lkay, Şafak Karakoç, Ni̇lüfer Aksöz
Indole-3-Acetic Acid And Gibberellic Acid Production In Aspergillus Niger, Işil Seyi̇s Bi̇lkay, Şafak Karakoç, Ni̇lüfer Aksöz
Turkish Journal of Biology
The effects of incubation time, temperature, pH, and agitation on indole-3- acetic acid and gibberellic acid production in Aspergillus niger were studied. For indole-3-acetic acid production, 6 days of incubation at 25 °C and pH 6.0 was found to be optimum. Optimum conditions for gibberellic acid production were 12 days of incubation at 30 °C and pH 5.0. Agitation increased both indole-3-acetic acid and gibberellic acid production.
Maternal Donors Of Polyploids In Pseudoroegneria (Poaceae: Triticeae) And Related Genera Inferred From Chloroplast Trnl-F Sequences, Yu Hai-Qing, Zhang Chun, Ding Chun-Bang, Ma Xiao, Zhou Yong-Hong
Maternal Donors Of Polyploids In Pseudoroegneria (Poaceae: Triticeae) And Related Genera Inferred From Chloroplast Trnl-F Sequences, Yu Hai-Qing, Zhang Chun, Ding Chun-Bang, Ma Xiao, Zhou Yong-Hong
Turkish Journal of Biology
To investigate the maternal donors and phylogenetic relationships of polyploids in Pseudoroegneria and related genera, the chloroplast trnL-F sequences of 31 Triticeae accessions were analyzed. The substitution saturation analysis of trnL-F sequences in this study suggested that they are suitable for phylogenetic analysis. In the trnL-F sequences tree, 4 major clades were formed: (a) the St/E clade comprised all of the Pseudoroegneria species together with species in Roegneria, Elytrigia, Douglasdeweya and Lophopyrum; (b) A. cristatum, A. mongolicum, and A. pectinatum subsp. retrofractum formed the P/W clade; (c) the Ns clade included species in Psathyrostachys; and (d) the H clade consisted …
Genetic Diversity In Doubled Haploid Wheat According To The Acid-Page Method, Morphological Traits, And Baking Quality, Javid Ojaghi, Ellada Akhundova
Genetic Diversity In Doubled Haploid Wheat According To The Acid-Page Method, Morphological Traits, And Baking Quality, Javid Ojaghi, Ellada Akhundova
Turkish Journal of Biology
This study aimed to assess the genetic diversity of 102 lines of doubled haploid wheat (obtained from CIMMYT) using the acid-PAGE method, morphological traits, and baking quality. Cluster analysis of the morphological traits separated all the genotypes into 4 groups, such that the genotypes with high yield were placed in 1 group. However, based on cluster analysis of their qualitative traits, the genotypes were classified into 3 main groups, while the genotypes with high protein content were placed in a distinct group. In all, 48 bands and 47 patterns were observed in the 102 lines studied, and polymorphism was observed …
Molecular Fingerprinting Of Some Clinically Significant Nocardia And Related Strains By Restriction Polymorphism Ribosomal Rna Analyses, Kami̇l Işik, Michael Goodfellow
Molecular Fingerprinting Of Some Clinically Significant Nocardia And Related Strains By Restriction Polymorphism Ribosomal Rna Analyses, Kami̇l Işik, Michael Goodfellow
Turkish Journal of Biology
Fifty-three Nocardia strains were the subject of a restriction polymorphic ribosomal RNA analysis (ribotyping) designed to distinguish between representatives of clinically significant species and related strains. The organisms were assigned to 19 groups using a combination of EcoRV gene restriction endonuclease patterns and a digoxigenin-labelled Streptomyces violaceoruber TK21 rDNA probe. Each ribotype group contained 4 to 13 restriction fragments that ranged in size from 20.7 to 0.9 kb. The N. brasiliensis, N. crassostreae, N. farcinica, N. otitidiscaviarum, and N. seriolea strains showed distinct ribotype patterns. Unique banding patterns were also seen for the type strains of N. brevicatena, N. carnea, …
Biological Activities Of Cu(Ii) And Hg(Ii) Complexes Of A Heptadentate Schiff Base Ligand, Emel Ergene, Hülya Si̇vas, Kadri̇ye Benkli̇
Biological Activities Of Cu(Ii) And Hg(Ii) Complexes Of A Heptadentate Schiff Base Ligand, Emel Ergene, Hülya Si̇vas, Kadri̇ye Benkli̇
Turkish Journal of Biology
Two metal complexes were synthesized as [Hg(L)](ClO_4)_2 and [Cu(L)](ClO_4)2 by the template reaction between 2,6-bis(2 aminothiophenoxymethyl)pyridine and 2,2'-bipyridine-6,6'-dicarboxaldehyde in the presence of Hg(II) and Cu(II) perchlorate salts. The structures of the compounds were elucidated by IR, 1H-NMR, MASS, and Elemental Analyses values. Cytotoxicity of the compounds were investigated by MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] assay in normal and cancerous rat fibroblasts. Both compounds showed cytotoxicity on 2 cell lines as a dose-dependent manner. Compound [Hg(L)](ClO_4)_2 was more cytotoxic than [Cu(L)](ClO_4)2. Apoptotic activity of compounds was evaluated by acridine orange staining and DNA fragmentation assay. Both cell lines exposed to the compounds exhibited …
Monitoring And Disinfection Of Biofilm-Associated Sulfate Reducing Bacteria On Different Substrata In A Simulated Recirculating Cooling Tower System, Esra İlhan Sungur, İrfan Türetgen, Reza Javaherdashti, Ayşin Çotuk
Monitoring And Disinfection Of Biofilm-Associated Sulfate Reducing Bacteria On Different Substrata In A Simulated Recirculating Cooling Tower System, Esra İlhan Sungur, İrfan Türetgen, Reza Javaherdashti, Ayşin Çotuk
Turkish Journal of Biology
Microbial biofilm and corrosion in cooling systems are the most common problems that damage expensive equipment, cause loss of production, and increase maintenance costs. Sulfate reducing bacteria were considered the major bacterial group involved in microbiologically influenced corrosion (MIC). We investigated the survival and enumeration of biofilm-associated SRB on coupons of galvanized steel, stainless steel, and copper, which are materials used in the manufacturing of cooling systems. We also investigated the effect of monochloromine on SRB as in mixed-species mature biofilms formed on coupons by simulating recirculating cooling water conditions, due to the better penetration feature in biofilms than the …
The In Vitro Effect Of Certain Fungicides, Insecticides, And Biopesticides On Mycelial Growth In The Biocontrol Fungus Trichoderma Harzianum, Soumik Sarkar, Pradeepa Narayanan, Ajay Divakaran, Angusamy Balamurugan, Robert Premkumar
The In Vitro Effect Of Certain Fungicides, Insecticides, And Biopesticides On Mycelial Growth In The Biocontrol Fungus Trichoderma Harzianum, Soumik Sarkar, Pradeepa Narayanan, Ajay Divakaran, Angusamy Balamurugan, Robert Premkumar
Turkish Journal of Biology
The in vitro effect of certain fungicides, insecticides, and biopesticides on mycelial growth of Trichoderma harzianum was evaluated. Seven systemic fungicides, 2 contact fungicides, and 4 biopesticides were tested. A progressive increase in percent inhibition of radial growth in the fungus was observed as the concentrations of the fungicides increased. Among the systemic fungicides, hexaconazole was the most toxic, followed by propiconazole and triflumizole. Toxicity of the contact fungicides was lower than that of the systemic fungicides, among which copper oxychloride and copper hydroxide were highly compatible; no inhibition was observed at lower concentrations. In terms of the insecticides tested, …
Heavy Metal Effects On P, Ca, Mg, And Total Protein Contents In Embryonic Pleopodal Eggs And Stage-1 Juveniles Of Freshwater Crayfish Astacus Leptodactylus (Eschscholtz, 1823), Utku Güner
Turkish Journal of Biology
To determine the potential biochemical effects of heavy metal pollution on aquatic organisms, pleopodal eggs, and stage-1 juveniles of the freshwater crayfish, Astacus leptodactylus (Eschscholtz, 1823), was exposed to a non-essential (Cd) and an essential (Cu) metal, either singly or in combination. Three different sublethal doses (0.1, 0.5, and 1 ppm) and 1 interaction dose (0.1 ppm Cu + 0.1 ppm Cd) were used to evaluate the accumulation and toxicity. The effects of 2 doses of metals on P, Ca, total protein, and Mg contents in the embryonic pleopodal eggs and in stage-1 juveniles were examined by an autoanalyzer. The …
Investigation Of Heavy Metal Resistance In Some Bacterial Strains Isolated From Industrial Soils, Ersoy Sevgi̇, Gökhan Coral, A. Murat Gi̇zi̇r, M.Kemal Sangün
Investigation Of Heavy Metal Resistance In Some Bacterial Strains Isolated From Industrial Soils, Ersoy Sevgi̇, Gökhan Coral, A. Murat Gi̇zi̇r, M.Kemal Sangün
Turkish Journal of Biology
Soil samples were collected from an industrial area in Kazanlı, Mersin, Turkey. Six heavy metals, Cr, Cu, Ni, Co, Cd, and Zn, were tested. ICP-AES analyses were carried out to detect the heavy metal levels of the soil samples. The analysis of test samples revealed high levels of Ni and Cr. A total of 272 Pseudomonas spp. and 161 Bacillus spp. strains were isolated from soils from 4 different sampling locations. The maximum tolerable metal concentrations (MTCs) of Cr, Cu, Ni, Co, Cd, and Zn for each isolate were determined. Resistance to Cr was found in 73.9% of the bacterial …
Fatty Acid Composition Of Total Lipids In Muscle Tissues Of Nine Freshwater Fish From The River Tigris (Turkey), Eli̇f İpek Cengi̇z, Erhan Ünlü, Mehmet Başhan
Fatty Acid Composition Of Total Lipids In Muscle Tissues Of Nine Freshwater Fish From The River Tigris (Turkey), Eli̇f İpek Cengi̇z, Erhan Ünlü, Mehmet Başhan
Turkish Journal of Biology
Fatty acid compositions of total lipids in the muscle of 9 freshwater fish species were examined via gas chromatography. Palmitic acid and oleic acid were the predominant saturated (SFA) and monounsaturated fatty acids (MUFA) in all the species analyzed. The highest value of total SFA was detected in Liza abu (48.94%). Alburnus mossulensis had the greatest percentage of total MUFA (55.56%). Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were the most abundant PUFA in all the species analyzed. Cyprinion macrostomus had the highest percentage (72.65%) of total PUFA. The ratio of \omega3/\omega6 PUFAs ranged from 0.39 to 3.53. Chondrostoma regium, …
Ultrastructural Changes In Rat Liver By Methyleugenol And Evaluation Of Some Biochemical Parameters, Ayşegül Çerkezkayabeki̇r, Gülnur Kizilay, Fi̇gen Ertan
Ultrastructural Changes In Rat Liver By Methyleugenol And Evaluation Of Some Biochemical Parameters, Ayşegül Çerkezkayabeki̇r, Gülnur Kizilay, Fi̇gen Ertan
Turkish Journal of Biology
The present study investigated the effect of methyleugenol, a food flavoring and fragrance agent, on the livers of laboratory rats. Doses of 10 and 30 mg/kg/day of methyleugenol (in 0.5% methylcellulose) were administered intragastrically (IG) to 2 dose groups for 10 days alongside a control group (n = 10 for each group). Gains in body weight were not statistically significant for either dose. Lactate dehydrogenase (LDH) and alkaline phosphatase (ALP) activities decreased (P < 0.05) for both dose groups, but AST (aspartate aminotransferase) activity decreased significantly (P < 0.05) only in the 30 mg/kg/day methyleugenol dose group. Alanine aminotransferase (ALT) activity did not change significantly in either group. The total amount of glucose remained unchanged, but glycogen in the liver decreased significantly (P < 0.05) in the 30 mg/kg/day methyleugenol dose group. There was also an increase of swelling in the smooth endoplasmic reticulum sacs (sER), electron dense accumulations in the sER, cytoplasmic vacuolization, a slight increase of mitochondria and lysosomes, and invaginations in the nucleus membranes of hepatocytes. Extensions in bile canaliculi and increasing microvilli of bile canaliculi in the liver were also observed. These findings indicate the ultrastructural toxic effect of methyleugenol on rat livers in 10 and 30 mg/kg/day doses. Therefore, we may speculate that the toxic effect of methyleugenol needs to be examined in detail.
Phenolic Compounds And Antioxidant And Antimicrobial Properties Of Helichrysum Species Collected From Eastern Anatolia, Turkey, Sevi̇l Albayrak, Ahmet Aksoy, Osman Sağdiç, Ümi̇t Budak
Phenolic Compounds And Antioxidant And Antimicrobial Properties Of Helichrysum Species Collected From Eastern Anatolia, Turkey, Sevi̇l Albayrak, Ahmet Aksoy, Osman Sağdiç, Ümi̇t Budak
Turkish Journal of Biology
The antioxidant activity of the methanolic extracts of 4 plants from genus Helichrysum Mill. (Asteraceae) [H. arenarium (L.) Moench subsp. erzincanicum Davis & Kupicha, H. arenarium (L.) Moench subsp. rubicundum (C.Koch.) Davis & Kupicha, H. armenium DC. subsp. araxinum (Kirp.) Takht., and H. plicatum DC. subsp. pseudoplicatum (Nab.) Davis & Kupicha] was investigated with 2 complementary test systems, DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging and phosphomolybdenum assay. H. plicatum subsp. pseudoplicatum showed the highest level of total antioxidant activity (161.79 ± 0.3 mg ascorbic acid equivalent/g extract) in the phosphomolybdenum assay. H. arenarium subsp. erzincanicum showed the highest level of free radical …
Temporal Variations Of Surface Phytoplankton, Nutrients And Chlorophyll A In The Dardanelles (Turkish Straits System): A Coastal Station Sample In Weekly Time Intervals, Muhammet Türkoğlu
Temporal Variations Of Surface Phytoplankton, Nutrients And Chlorophyll A In The Dardanelles (Turkish Straits System): A Coastal Station Sample In Weekly Time Intervals, Muhammet Türkoğlu
Turkish Journal of Biology
In this study, weekly distributions of inorganic nutrients and phytoplankton cell volumes were investigated in relation to the hydrology of the Dardanelles. The data were collected between March 2001 and March 2002. NO^{-}_{2}+NO^{-}_{3}, PO_{4}^{-3}, and SiO_4 concentrations ranged between 0.050-6.887 µM, 0.051-1.152 µM, and 0.64-10.74 µM, respectively. During the study, the highest nutrient values were measured between late fall and mid-winter. Inorganic N:P and Si:P ratios in the surface water were lower due to high PO_{4}^{-3} concentrations. The chlorophyll a concentrations ranged from 0.03 to 8.67 µg L^{-1}. Phytoplankton cell density and cell volume ranged from 1.54E + 05 to …
The Interactive Effect Of Heavy Metals And Uv-B Radiation On Two Cucumber Cultivars, Shweta Mishra, Suruchi Singh, Rajesh Kumar Sharma, Shashi Bhushan Agrawal
The Interactive Effect Of Heavy Metals And Uv-B Radiation On Two Cucumber Cultivars, Shweta Mishra, Suruchi Singh, Rajesh Kumar Sharma, Shashi Bhushan Agrawal
Turkish Journal of Biology
The effects of supplemental UV-B (sUV-B) irradiance, and Cd and Ni treatment alone and in combination were evaluated on heavy metal accumulation, and growth, biomass, and yield responses in 2 cucumber cultivars (Cucumis sativus L. cultivars Local Super Green and Tripti-19). Responses to the combined application of Cd and Ni in both cultivars were antagonistic. Cultivar Tripti-19 showed more sensitivity in terms of yield response towards sUV-B and heavy metals than did Local Super Green. sUV-B exposure increased the concentration of Cd/Ni in the roots, shoots, and fruits of cucumber plants, as compared to the unexposed plants. Bioaccumulation of Cd, …
Cadmium-Induced Antioxidant Status And Sister-Chromatid Exchanges In Vicia Faba L., Serpi̇l Ünyayar, Ayşi̇n Güzel Değer, Ayla Çeli̇k, Fazi̇let Özlem Çeki̇ç, Sertan Çevi̇k
Cadmium-Induced Antioxidant Status And Sister-Chromatid Exchanges In Vicia Faba L., Serpi̇l Ünyayar, Ayşi̇n Güzel Değer, Ayla Çeli̇k, Fazi̇let Özlem Çeki̇ç, Sertan Çevi̇k
Turkish Journal of Biology
The effects of cadmium (Cd) on antioxidant responses and sister chromatid exchanges (SCE) were studied in Vicia faba L. The activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR), and the levels of ascorbate (ASC), glutathione (GSH), hydrogen peroxide, and malondialdehyde (MDA, indicator of lipid peroxidation) were measured. Genotoxicity was evaluated by measuring the changes in the mitotic index (MI) and sister chromatid exchanges (SCE). Increased activities of SOD and CAT were observed in plants treated with 50 and 100 µM Cd. It was found that APX activity increased remarkably with 50 µM Cd, but …
A Native Glomus Sp. From Fields In Aydın Province And Effects Of Native And Commercial Mycorrhizal Fungi Inoculants On The Growth Of Some Vegetables, Ayhan Yildiz
Turkish Journal of Biology
Seventy soil samples were collected from 25 different plant varieties grown in fields in Aydın province. Arbuscular mycorrhizal fungi (AMF) were found in 59 soil samples; 58 of these were identified as Glomus sp. and 1 as Gigaspora sp. Due to its adaptation characteristics, growth rates, and colonization properties, Glomus sp. was selected for further study. The effects of Glomus sp. and BioOrganics (Glomus aggregatum, G. clarum, G. deserticola, G. intraradices, G. monosporus, G. mosseae, Gigaspora margarita, and Paraglomus brasilianum) on tomato, pepper, and cucumber plant development were evaluated. The indigenous Glomus sp. showed positive effects on cucumber and tomato …
Siderophore, Hemolytic, Protease, And Pyrazinamidase Activities And Antibiotic Resistance In Motile Aeromonas Isolated From Fish, Belgi̇n Erdem, Ergi̇n Kari̇ptaş, Tayfun Kaya
Siderophore, Hemolytic, Protease, And Pyrazinamidase Activities And Antibiotic Resistance In Motile Aeromonas Isolated From Fish, Belgi̇n Erdem, Ergi̇n Kari̇ptaş, Tayfun Kaya
Turkish Journal of Biology
A total of 120 fresh water fish samples were evaluated for the presence of Aeromonas spp. A. hydrophila, A. caviae, and A. veronii bv. sobria were isolated from the gills, intestines, livers, and skins of fish, and 78 isolated Aeromonas spp. strains were further examined for siderophore, hemolytic, protease, and pyrazinamidase activities and antibiotic resistance. Siderophore production was demonstrated in almost all of the A. hydrophila and A. caviae strains except for 2 strains of A. veronii bv. sobria. The strains identified as A. hydrophila and A. veronii bv. sobria were the stronger producers of hemolysin, whereas the A. caviae …
Callus Culture From Leaf Blade, Nodal, And Runner Segments Of Three Strawberry (Fragaria Sp.) Clones, Manosh Kumar Biswas, Monzur Hossain
Callus Culture From Leaf Blade, Nodal, And Runner Segments Of Three Strawberry (Fragaria Sp.) Clones, Manosh Kumar Biswas, Monzur Hossain
Turkish Journal of Biology
The present investigation was conducted to study the effects of auxin and cytokinin on callus induction from leaf blade, nodal, and runner segments of 3 strawberry clones. Among the 32 media combinations tested, 4.0 mg/L NAA + 1.5 mg/L IBA yielded the highest percentage of callus in all types of explants. The rate of adventitious shoot regeneration from callus was also influenced by explant type and concentration of BA in MS medium. The highest shoot regeneration rate was observed in leaf derived callus of clone Rabi-01 on media having 3 mg/L BA. Adventitious shoots were rooted, acclimatized, and subsequently transplanted …
The Effects Of The Pho85 Signaling Pathway On The Invertase Biosynthesis And Glucose Uptake In Saccharomyces Cerevisiae, Sezai̇ Türkel, Eli̇f Arik
The Effects Of The Pho85 Signaling Pathway On The Invertase Biosynthesis And Glucose Uptake In Saccharomyces Cerevisiae, Sezai̇ Türkel, Eli̇f Arik
Turkish Journal of Biology
Glucose signaling controls a wide range of metabolic events in the yeast Saccharomyces cerevisiae. Glucose sensing and signaling processes require a variety of membrane-bound and cytoplasmic sensor proteins. Pho85p is a cyclin-dependent protein kinase that controls different metabolic events upon binding to its cyclin partners in the cytoplasm of yeast cells. In this study, we investigated the roles of Pho85p in the glucose signaling pathways that control invertase biosynthesis and glucose uptake in yeast. The biosynthesis of invertase enzyme from the SUC2 gene is controlled by glucose repression and derepression mechanisms in S. cerevisiae. However, the results of this research …
Antioxidant And Antibacterial Activities Of Ranunculus Marginatus Var. Trachycarpus And R. Sprunerianus, Gülen İrem Kaya, Nehi̇r Ünver Somer, Si̇bel Konyalioğlu, H. Tansel Yalçin, N. Ülkü Karabay Yavaşoğlu, Buket Sarikaya, Mustafa Ali̇ Onur
Antioxidant And Antibacterial Activities Of Ranunculus Marginatus Var. Trachycarpus And R. Sprunerianus, Gülen İrem Kaya, Nehi̇r Ünver Somer, Si̇bel Konyalioğlu, H. Tansel Yalçin, N. Ülkü Karabay Yavaşoğlu, Buket Sarikaya, Mustafa Ali̇ Onur
Turkish Journal of Biology
Hexane, ethyl acetate, methanol, and aqueous extracts of Ranunculus marginatus d'Urv. var. trachycarpus (Fisch. & Mey.) Azn. and R. sprunerianus Boiss. were tested in vitro for their antioxidant and antibacterial activities. Antioxidant activity of the extracts was determined by DPPH radical scavenging and Trolox equivalent antioxidant capacity assays. Methanol extracts showed the highest antioxidant activity in both assays. The total phenolics in the extracts were determined colorimetrically by using the Folin-Ciocalteau reagent. The total flavonoid content of the extracts was evaluated by a spectrophotometric method. The results obtained in the antioxidant activity tests were in positive correlation with the total …
Antioxidant And Antimicrobial Activities Of An Aquatic Plant: Duckweed (Lemna Minor L.), İlhami̇ Gülçi̇n, Ekrem Ki̇reçci̇, Ebru Akkemi̇k, Fevzi̇ Topal, Olcay Hi̇sar
Antioxidant And Antimicrobial Activities Of An Aquatic Plant: Duckweed (Lemna Minor L.), İlhami̇ Gülçi̇n, Ekrem Ki̇reçci̇, Ebru Akkemi̇k, Fevzi̇ Topal, Olcay Hi̇sar
Turkish Journal of Biology
Duckweed (Lemna minor L. Lemnaceae) is a widespread, free-floating aquatic macrophyte, a source of food for waterfowl and a shelter for small aquatic invertebrates. It grows quickly and reproduces faster than other vascular plants. The objective of this study was to determine the antioxidant, antiradical, antimicrobial, and anticandidal activities of duckweed using different in vitro methodologies. For evaluation of antioxidant and antiradical activities, 2,2´-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS.+) radical scavenging, 1,1-diphenyl-2-picryl-hydrazyl (DPPH.) free radical scavenging, total antioxidant activity by ferric thiocyanate, total reducing power by potassium ferricyanide reduction method, superoxide anion radical scavenging, hydrogen peroxide scavenging, and ferrous ions chelating activities were …
Evaluation Of Hypoglycemic And Hypolipidemic Activity Of Buteamonosperma Fruit In Diabetic Human Subjects, Fizza Naeem, Sohail Hassan Khan
Evaluation Of Hypoglycemic And Hypolipidemic Activity Of Buteamonosperma Fruit In Diabetic Human Subjects, Fizza Naeem, Sohail Hassan Khan
Turkish Journal of Biology
Evaluation of the hypoglycemic activity of local Butea monosperma (Palas papra) fruit in normal and diabetic human volunteers was conducted. Sampling was accomplished in and around the city of Faisalabad, especially at the Khadija Mahmood Trust Hospital and at the University of Agriculture, Faisalabad, Pakistan. Volunteers were categorized into normal and diabetic subjects on the basis of their blood glucose levels. Male and female diabetic volunteers aged between 30 and 60 years participated in the study. All the diabetic volunteers suffered from diabetes type II, i.e. non-insulin-dependent diabetes mellitus (NIDDM). The subjects were divided into 5 groups as follows: Group …
The Effect Of The Interaction Between Genotypes And Drought Stress On The Superoxide Dismutase And Chlorophyll Content In Durum Wheat Landraces, Mohammad Zaefyzadeh, Rauf Alakbar Quliyev, Sevda Mashalla Babayeva, Mehraj Ali̇ Abbasov
The Effect Of The Interaction Between Genotypes And Drought Stress On The Superoxide Dismutase And Chlorophyll Content In Durum Wheat Landraces, Mohammad Zaefyzadeh, Rauf Alakbar Quliyev, Sevda Mashalla Babayeva, Mehraj Ali̇ Abbasov
Turkish Journal of Biology
Free radicals and other active derivatives of oxygen inactivate enzymes and important plant cellular components. Superoxide dismutases (SODs) have been identified as essential components in an organism´s defence mechanism. This study was devoted to the investigation of SOD activity in 13 durum wheat landraces from Iran and Azerbaijan under 2 (drought and normal) conditions. The effect of drought stress on SOD, chlorophyll content index (CCI), and chlorophyll degradation were studied. Significant differences between genotypes and the genotype × environment interaction among SOD and CCI content were identified. The mean comparison showed that the contents of SOD and CCI decreased in …
The Effects Of Oral Administration Of An Aqueous Extract Of Ficus Bengalensis Stem Bark On Some Hematological And Biochemical Parameters In Rats With Streptozotocin-Induced Diabetes, Mahalingam Gayathri, Krishnan Kannabiran
The Effects Of Oral Administration Of An Aqueous Extract Of Ficus Bengalensis Stem Bark On Some Hematological And Biochemical Parameters In Rats With Streptozotocin-Induced Diabetes, Mahalingam Gayathri, Krishnan Kannabiran
Turkish Journal of Biology
The effects of sub-chronic administration of an aqueous extract of Ficus bengalensis stem bark on hematological and biochemical parameters in rats with streptozotocin (STZ)-induced diabetes were evaluated. The possible protective effect of the F. bengalensis (500 mg/kg of body weight per day) extract on STZ-induced changes was evaluated over 12 weeks. The parameters evaluated were plasma proteins, including total protein albumin and globulin, non-protein nitrogenous substances, including urea, uric acid, and creatinine, and hematological indices, including total hemoglobin content, erythrocytes, leucocytes, and platelets counts. The aqueous extract had a significant (P < 0.05) protective effect against STZ-induced changes in terms of the markers of protein metabolism and hematological indices. Furthermore, increases in levels of non-protein nitrogenous substances were normalized in response to the administration of the extract. Thus, the aqueous extract of F. bengalensis had a significant protective effect on STZ-induced changes to biochemical and hematological parameters in the diabetic rats.
Hormonal Factors Of Anti-Mutagenesis Regulation, Mekhtizadeh Emin Rza
Hormonal Factors Of Anti-Mutagenesis Regulation, Mekhtizadeh Emin Rza
Turkish Journal of Biology
The genetic activity of phytohormones (Phs) was studied. The investigation was conducted with 4 plants (Allium fistulosum, Lycopersicon esculentum, Triticum aestivum, and Gossypium hirsutum). The action of Phs on plant genetic processes was evaluated by chromosome aberration testing. It was observed that the exogenic Phs exerted a stabilizing effect on spontaneous plant mutagenesis. The use of Phs before and after the action of mutagenic factors contributed to an increase in the anti-mutational or reparative function of the plants´ genes. It was observed that the Phs exhibited genoprotective or reparative activity. The absence of clearly expressed dependence of these effects on …
Identification Of Lactococcus Lactis Subsp. Isolates Based On Their Cell Wall Protein Profiles And Plasmid Contents, Mehtap Üstün, Banu Özden, Ömer Şi̇mşek, Mustafa Akçeli̇k
Identification Of Lactococcus Lactis Subsp. Isolates Based On Their Cell Wall Protein Profiles And Plasmid Contents, Mehtap Üstün, Banu Özden, Ömer Şi̇mşek, Mustafa Akçeli̇k
Turkish Journal of Biology
In this study, among the total 50 lactococci isolates, 44% L. lactis subsp. lactis, 28% L. lactis subsp. lactis biovar. diacetylactis and 28% L. lactis subsp. cremoris strains were identified by their phenotypic characterization. According to the cell wall protein patterns, 8.6, 12.5, 14.7, 20.3, 23.4, 25.4, and 31.8 kDa proteins were found identical within 82% of isolates. Moreover 93% of L. lactis subsp. cremoris strains contained a unique 157.8 kDa protein; however, L. lactis subsp. lactis and L. lactis subsp. lactis biovar. diacetylactis had no unique protein in their groups. Also a key plasmid profile, which would be used …
A Cytogenetical Study On Some Plants Taxa In Nizip Region (Aksaray, Turkey), Meryem Öztürk, Esra Marti̇n, Muhi̇tti̇n Di̇nç, Ahmet Duran, Ayşe Özdemi̇r, Özlem Çeti̇n
A Cytogenetical Study On Some Plants Taxa In Nizip Region (Aksaray, Turkey), Meryem Öztürk, Esra Marti̇n, Muhi̇tti̇n Di̇nç, Ahmet Duran, Ayşe Özdemi̇r, Özlem Çeti̇n
Turkish Journal of Biology
This cytological study was performed in 19 taxa grown naturally in Nizip region (Aksaray). These taxa are Conringia perfoliata (C.A.Mey.) Busch, Alyssum strigosum Banks & Sol. subsp. strigosum, Alyssum murale Waldst. & Kit. subsp. murale var. murale, Matthiola longipetala (Vent.) DC. subsp. bicornis (Sibth. & Sm.) P.W.Ball., Erysimum thyrsoideum Boiss. subsp. thyrsoideum (Brassicaceae), Silene alba (Mill.) E.H.L. Krause subsp. divaricata (Reichb.) Walters, Silene conoidea L., Silene otites (L.) Wibel. (Caryophyllaceae), Linum austriacum L. subsp. austriacum (Linaceae), Medicago x varia Martyn., Onobrychis argyrea Boiss. subsp. argyrea (Fabaceae), Astrodaucus orientalis (L.) Drude (Apiaceae), Centaurea patula DC., Centaurea solstitialis L. subsp. solstitialis, Cnicus …
Hypoxia Induced Changes In The Lipid Peroxidation, Membrane Permeability, Reactive Oxygen Species Generation, And Antioxidative Response Systems In Zea Mays Leaves, Rashid Jamei, Reza Heidari, Jalil Khara, Samad Zare
Hypoxia Induced Changes In The Lipid Peroxidation, Membrane Permeability, Reactive Oxygen Species Generation, And Antioxidative Response Systems In Zea Mays Leaves, Rashid Jamei, Reza Heidari, Jalil Khara, Samad Zare
Turkish Journal of Biology
The effects of hypoxia on the activities of some enzymes of antioxidative, non- enzymatic scavenging system, membrane permeability, lipid peroxidation, and some reactive oxygen species (ROS) in leaves of Zea mays were investigated. Samples were taken 48, 96, 144, and 192 h after the start of hypoxia treatment. A 192 h hypoxia treatment resulted in a significant rise in membrane permeability, lipid peroxidation (malondialdehyde level), and the production of hydrogen peroxide (H_2O_2) and superoxide (O_2^-) in maize leaves. A short duration of hypoxia enhanced the activity of superoxide dismutase (SOD; EC 1.15.1.1), catalase (CAT; EC 1.11.1.6), ascorbate peroxidase (APX; EC …
Determination Of Mycorrhizae Interactions And Pathogenicity Of Rhizoctonia Solani Kühn Isolated From Strawberry And Xanthium Strumarium, Ayşenur Bayözen, Ayhan Yildiz
Determination Of Mycorrhizae Interactions And Pathogenicity Of Rhizoctonia Solani Kühn Isolated From Strawberry And Xanthium Strumarium, Ayşenur Bayözen, Ayhan Yildiz
Turkish Journal of Biology
The effects of mycorrhizal fungi on the disease severity of Rhizoctonia solani Kühn., and the role of mycorrhizal fungi on strawberry (Fragaria vesca L.) growth were investigated. Strawberry seedlings were inoculated with BioOrganics as a mycorrhizal preparation against 2 R. solani isolates, which were isolated from strawberry (RsFv) and Xanthium strumarium (RsXs). The highest disease severity in strawberry roots was observed after inoculation with RsFv at a rate of 67%. On the other hand, the lowest disease severity in strawberry roots was at 31% for 15BRsFv (15 days before inoculation with BioOrganics and RsFv). Similarly, the highest disease severity in …