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Öğe Antimicrobial and antioxidant activities of medicinal plant Glycyrrhiza glabra var. glandulifera from different habitats(Taylor & Francis Ltd, 2016) Karahan, Faruk; Avsar, Cumhur; Ozyigit, Ibrahim Ilker; Berber, IsmetIn this study, the antimicrobial and antioxidant activities of root methanolic extracts of Glycyrrhiza glabra var. glandulifera (Waldst. & Kit.) Boiss. (Fabaceae) were investigated. Plant samples were collected from different habitats in the East Mediterranean part of Turkey. The plant extracts were evaluated for antimicrobial activities against nine bacterial and two yeast strains using disc-diffusion and minimum inhibitory concentration methods. The antioxidant activity was determined by using the DPPH (1,1-diphenyl-2-picrylhydrazyl) method. The antimicrobial assays indicated that the plant root extracts were more effective against Gram-positive bacteria than against Gram-negative ones. In addition, the extracts had higher antimicrobial effect against Candida species than against bacteria. The extracts showed good antioxidant activity, with a median inhibitory concentration (IC50) in the range of 588 +/- 0.86 mu g/mL to 2190 +/- 1.73 mu g/mL. Results indicated that different environmental conditions in each habitat might affect the contents of chemical compounds and biological activity in the natural licorice populations of. This study also supported the traditional use of licorice and as well as suggested that it may also be its beneficial role in the treatment of other infections. The obtained results indicated that different environmental conditions in each habitat might affect the contents of chemical compounds and the biological activity in the natural licorice populations.Öğe A case study performed in Kucukcekmece Lagoon channel/Istanbul, Turkey: how the heavy metal contamination and the seasonal variations on phytoplankton composition influence water quality(Desalination Publ, 2021) Yilmaz, Nese; Ozyigit, Ibrahim Ilker; Dogan, Ilhan; Demir, Goksel; Yalcin, Ibrahim ErtugrulIn this work, the experiments related to seasonal variations of phytoplankton composition and heavy metal contamination along with some water quality parameters were carried out throughout the channel, serving as a waterway between Lake Kucukcekmece and the Sea of Marmara. Considered as a Class B wetland, the lake has been stayed within the metropolitan area of Istanbul overtime. The samples from the surface water were taken monthly by using Nansen bottles at 5 sampling sites through the period of March-November. After experimental procedures, a total of 46 taxa were recorded belonging to Bacillariophyta (20), Charophyta (4), Chlorophyta (6), Cryptophyta (1), Cyanobacteria (4), Euglenozoa (3), and Miozoa (8) divisions. The phytoplankton densities were found to be varied from 76 individual cm' to 3,283 individual cm(-3) throughout the channel and the variation for chlorophyll-a contents was between 0.99-55.32 mg m(3) . From our results, the heavy metal and nutrient concentrations were found to be as: 0.78-1.55 mg L-1 for Al, 4.2813.88 mg L-1 for B, 1,201-1,693 mg L-1 for Ca, 45.20-120.40 mu g L(-1 )for Cd, 432.40-1,398.40 mu g L-1 for Cr, 232.00-1,043.00 mu g L-1 for Cu, 663.40-2,315.60 mu g L-1 for Fe, 626.20-1,435.20 mg L-1 for K, 738.001,113.00 mg L-1 for Mg, 1,882-6,084 mg L-1 for Na, 30.00-317.80 mu g L-1 for Ni, 17.40-158.00 mu g L-1 for Pb, and 440.20-1,186.20 mu g L-1 for Zn. According to the data obtained in this study, the area where research conducted was determined as having eutrophic characteristics.Öğe A COMPARATIVE BIOGEOGRAPHICAL STUDY OF MYXOMYCETES IN FOUR DIFFERENT HABITATS OF EASTERN MEDITERRANEAN PART OF TURKEY(Parlar Scientific Publications (P S P), 2016) Baba, Hayri; Zumre, Murat; Ozyigit, Ibrahim IlkerIn this study, Myxomycetes were collected from four different habitats of Hatay province of Turkey during 2010-2015, including Altinozu plateau, Belen Atik highland, Kirikhan Amik plain and Yayladagi Selcen Mountain. From identificated 1047 samples, 102 species were classified in 6 orders, 12 families and 28 genera. 27 species were obtained from natural environment while 114 species cultered by moist chamber technique. In addition, 61 species was obtained from both natural environment and moist chamber technique. Physarales is the highest proportion order (29.4%), followed by Trichiales (25.4%) and Stemonitales (24.5%). The total myxomycetes ratio of these three orders was determined as 79.4%. When samples from four different habitats compared in terms of substrate types, at three habitats, dominant species is lignicol Myxomycetes (65-85%), while at one habitat, corticol Myxomycetes (65%) is the dominant type. Arcyria cinerea, Comatricha ellae, Comatricha nigra, Echinostelium minutum and Stemonitopsis amoena is the most generous species at four areas. Moreover, morphological, chorological and ecological characteristics of Myxomycetes were discussed.Öğe Concentrations of plant mineral nutrients and potentially toxic elements in some medicinal plants in the Asteraceae, Fabaceae, and Lamiaceae families from Southern Turkiye: insights into health implications(Taylor & Francis Inc, 2023) Karahan, Faruk; Ozyigit, Ibrahim Ilker; Yalcin, Ibrahim Ertugrul; Hocaoglu-Ozyigit, Asli; Erkencioglu, Bedriye Nazli; Ilcim, AhmetMedicinal plants have been used throughout history in the treatment of many diseases in traditional Anatolian folk medicine as well as all over the world. The rapid increase in agricultural and industrial activities due to the increasing population around the world causes air, water and soil pollution, and accumulation of potentially toxic elements in medicinal plants. In this study, plant mineral nutrients and potentially toxic elements analyzes were carried out in 38 plant species belonging to the medicinally important families Asteraceae, Fabaceae and Lamiaceae. The percentage of macroelements (in %) varies between 0.20 and 1.46 for calcium, 0.08 and 1.35 for potassium, 0.04 and 0.24 for magnesium, 0.01 and 0.34 for sodium, while concentrations of microelements and potentially toxic elements (in mg kg(-1)) vary between 3.21 and 721.28 for aluminum, 41.33 and 231.01 for boron, 0.01 and 0.61 for cadmium, 1.09 and 47.79 for chromium, 12.90 and 43.13 for copper, 17.75 and 1109.39 for iron, 51.50 and 715.48 for manganese, 0.12 and 9.42 for nickel, 1.58 and 22.11 for lead and finally 80.82 and 260.08 for zinc. In addition, estimated daily intake (EDI), target hazard quotient (THQ), and hazard index (HI) for potentially toxic elements, and Recommended Dietary Allowance (RDA) values for mineral nutrients were calculated. In some samples in industrial and mining areas, accumulation of some potentially toxic elements was slightly above the permissible limits set by the World Health Organization (WHO). In Summary, the importance of collecting medicinal plants from protected areas such as mountainous rural areas, far from mining, close to clean rivers, and regular control of values with potentially toxic elements analyzes for human health has been understood once again.Öğe AN ECOLOGICAL STUDY OF ENDEMIC PLANT POLYGONUM ISTANBULICUM KESKIN AND ITS ENVIRONS(Pakistan Botanical Soc, 2013) Altay, Volkan; Ozyigit, Ibrahim Ilker; Keskin, Mustafa; Demir, Goksel; Yalcin, Ibrahim ErtugrulIn this study, some ecological features of narrow endemic Polygonum istanbulicum Keskin, which was established as a new plant species in 2009, and its environs were examined. There are 41 known Polygonum taxa in Turkey and the genus is represented by 14 species in Istanbul. Plant and soil samples were collected from the place where the species merely lives in the world (Basibuyuk Forest, Maltepe District, Istanbul/Turkey). Plant and soil samples were collected by using standard methods and root, branch, leaf and soil mineral nutrients (Ca, Cu, K, Mg, Mn, N, P, Na, Zn), were measured. Additionally, soil texture, structure and other physical and chemical measurements such as pH, total protein and electrical conductivity (EC) were determined.Öğe An ecological study of endemic plant Polygonum istanbulicum Keskin and its environs(2013) Altay, Volkan; Ozyigit, Ibrahim Ilker; Keskin, Mustafa; Demir, Goksel; Yalcin, Ibrahim ErtugrulIn this study, some ecological features of narrow endemic Polygonum istanbulicum Keskin, which was established as a new plant species in 2009, and its environs were examined. There are 41 known Polygonum taxa in Turkey and the genus is represented by 14 species in Istanbul. Plant and soil samples were collected from the place where the species merely lives in the world (Başi{dotless}büyük Forest, Maltepe District, Istanbul/Turkey). Plant and soil samples were collected by using standard methods and root, branch, leaf and soil mineral nutrients (Ca, Cu, K, Mg, Mn, N, P, Na, Zn), were measured. Additionally, soil texture, structure and other physical and chemical measurements such as pH, total protein and electrical conductivity (EC) were determined.Öğe Genetic Diversity and Phylogenetic Analyses of Turkish Cotton (Gossypium HirsutumL.) Lines Using ISSR Markers and ChloroplasttrnL-FRegions(Taylor & Francis Inc, 2022) Hocaoglu-Ozyigit, Asli; Ucar, Bihter; Altay, Volkan; Ozyigit, Ibrahim IlkerIn this study, genetic diversity and phylogenetic relationships of 22 cotton (Gossypium hirsutumL.) lines widely cultivated in Turkey were investigated. For this purpose, 20 ISSR primers were used, and five of which generated amplification products. The polymorphic locus ratio was calculated as 87.21% and a moderate level of genetic diversity was found between the genotypes. Percentage of the highest polymorphic locus was calculated as 12.79% for the Beren line, whereas ADN 98, ADN 710, and ozbek 105 lines showed the lowest value with 0.00%.trnL-Fintergenic spacer sequences were used in order to determine phylogenetic relationships, and a comparison was carried out between both sequences of our lines and the sequences obtained from NCBI-GenBank database. The sequences ofG. hirsutum, G. hirsutumsubsp.latifolium, andG. hirsutumcv. Hainansijimian were described as the most similar sequences according to specifications of coverage, similarity, and maximum score ranges. Then, a phylogenetic tree was established by using the sample sequences from the prominent families cultivated, especially from Malvaceae. While the members of Malvaceae family were clustered as one group, the other families were comprised of different groups located in different positions according to their genetic similarities.Öğe Heavy Metal Levels and Mineral Nutrient Status in Different Parts of Various Medicinal Plants Collected from Eastern Mediterranean Region of Turkey(Humana Press Inc, 2020) Karahan, Faruk; Ozyigit, Ibrahim Ilker; Saracoglu, Ibrahim Adnan; Yalcin, Ibrahim Ertugrul; Hocaoglu-Ozyigit, Asli; Ilcim, AhmetMedicinal plants have been used for treatment of many diseases since the ancient times with traditional knowledge being transferred from generation to generation. However, in recent years, many natural habitats have been contaminated due to increased anthropogenic activities. Plants which are exposed to heavy metal toxicity may experience several serious problems. Furthermore, the inclusion of these plants into the food chain poses a threat to human health as well. Additionally, presence of heavy metals directly effect mineral nutrition and consequently the food quality. The aim of this study herewith is to determine the heavy metal content and mineral nutrient status of some medicinal plants to have insight on their health repercussions on plants and humans. The concentrations of Al, B, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb and Zn in commonly used parts (root, rhizome, seed, resin, gall, fruit) especially for remedial purposes of 17 medicinal plants collected from Turkey were analyzed by ICP-OES. The measured values for concentrations from lowest to highest were (in mg kg(-1)) 30.983-368.877 for Al, 13.845-186.015 for B, 1335.699-11213.951 for Ca, 0.016-0.653 for Cd, 0.379-30.708 for Cr, 23.838-90.444 for Cu, 78.960-1228.845 for Fe, 1035.948-6393.491 for K, 83.193-2252.031 for Mg, 12.111-362.570 for Mn, 278.464-1968.775 for Na, 1.945-35.732 for Ni, 0.796-17.162 for Pb and 166.910-395.252 for Zn. Overall, heavy metal concentrations in medicinal plants collected nearby industrial regions, mining and farming sites, were found to be in slightly higher levels. This shows us that it is of crucial importance that the areas where medicinal plants are collected are clean especially by means of heavy metals for the reason that these plants can cause more harm than the benefits they may provide if they are contaminated.Öğe PLANT COMMUNITIES IN URBAN HABITATS OF ISTANBUL-TURKEY(Pakistan Botanical Soc, 2012) Altay, Volkan; Ozyigit, Ibrahim Ilker; Yarci, CelalThis study aims to analyze and classify distribution of urban vegetation as plant communities in Anatolian Side of Istanbul Turkey. The study was carried out in all districts of the Anatolian side excluding Sue and in total, 223 quadrates were recorded during 2004-2009 vegetation periods. Braun-Blanquet method was used for classification. As a result of the study, a total of 13 plant communities distributed in the study area was found. The plant groups were; Sarcopoterium spinosum, Erica manipuliflora, Tordylium apulum, Sinapis arvensis, Rapistrum rugosum, Carduus pycnocephalus, Carduus matins, Centaurea iberica, Centaurea solstitialis subsp. solstitialis, Rumex crispus, Ammi visnaga, Cichorium intybus and Parietaria judaica. The floristic, ecologic and syntaxonomic analyses of these plant groups were realized and their distributions in the study area were given. Additionally, some soil properties such as maximum water holding capacity, pH, electrical conductivity, organic matter, CaCO3, P2O5, K2O and texture (sand, silt and clay) were analyzed. The formation and development conditions of them were described and discussed at the end of the paper. Protection against damage of this vegetation or at least protection of the existent situation was presented as suggestions.Öğe THREE NEW RARE MYXOMYCETES (MYCETOZOA) RECORDS FROM HATAY, TURKEY(Parlar Scientific Publications (P S P), 2017) Baba, Hayri; Ozyigit, Ibrahim IlkerIn this study, Myxomycetes samples were collected from Hatay Province of Turkey on various occasions during 2016. As a result of field and laboratory studies, three rare Myxomycetes species were reported for the first time from Turkey. These species are; Physarum murinum A. Lister, Physarum schroeteri Rostaf and Reticularia intermedia Nann.Bremek. P. murinum and P. schroeteri were harvested from moist-chamber cultures in laboratory, and R. intermedia collected from its natural habitat. Morphological, chorological and ecological characteristics of these species were comparatively analyzed. In addition, photographs of these new records were taken by light and scanning electron microscopes (SEM).Öğe Urban flora and ecological characteristics of the Kartal District (Istanbul): A contribution to urban ecology in Turkey(Academic Journals, 2010) Altay, Volkan; Ozyigit, Ibrahim Ilker; Yarci, CelalFor years, ecologists who have been trying to understand the relationship between the organisms with each other and/or their environments, have carried out their researches sometimes far from civilization, sometimes on a desolate island or in a tropical rainforest. Today, about half of the world's population lives in urban areas. Therefore, most of the ecological problems have been brought to these areas. Nevertheless, in cities, preserving and maintaining natural habitats, providing a place not only to live but also to enjoy and to relax, are possible only by applying the principles and concepts of urban ecology in planning. This study presents the outcomes of unplanned urbanization and possible preventive measures, which could be taken in the Kartal District, Istanbul-Turkey. Moreover, in this study, different kinds of urban habitats within the frontiers of Kartal were described and an inventorial study containing native, exotic and cultivated plant taxa were realized. For this plant inventory of the Kartal District, all the greenery in the area were explored in different seasons. Plant samples were collected, dried, labelled and then determined according to standard herbarium procedures. In the present study, totally 576 plant taxa were determined, whereas 477 (395 species, 51 subspecies and 31 varieties) of them were natural and 99 were exotic and cultivated. The most native taxa were in the Asteraceae family (50 species), while the most found kind of exotic plant family was Rosaceae (16 species). The archaeophyte and neophyte plants in these taxa, endemic, rare, endangered, medicinal and poisonous species were also mentioned. Furthermore, the necessity of having ecological studies become widespread in urban areas, initially in Istanbul and later in other places was emphasized in the study.Öğe Vegetation ecology of the Princes' Islands, Istanbul-Turkey(Triveni Enterprises, 2015) Ozyigit, Serpil; Altay, Volkan; Ozyigit, Ibrahim Ilker; Yarci, CelalThe aim of this paper was to evaluate phytoecological and phytosociological characteristics of the vegetation distributed in Princes' Islands (Istanbul/Turkey). Field studies were carried out during 20022010 following the classical Braun-Blanquet method. The data obtained from the research area on characteristics of two associations belonging to maquis vegetation was analyzed. One of these associations was new and its detailed description, typification and syntaxonomy are mentioned. The associations identified were: Arbuto unedonis - Phillyretum latifoliae ass. nova and Phillyreo latifoliae-Pinetum brutiae. The physical and chemical characteristics of soil like saturation (%), pH, P2O, (kg dal, K2O (kg da(-1)), CaCO2(%), total salt (%) and organic matter (%) are presented as well. Relationship between vegetation, ecological characteristics and their protection against biotic pressures were discussed together with phytosociological and phytoecological features of the associations and was compared with similar other studies.
