Yazar "Ersoy, Huseyin" seçeneğine göre listele

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    Evaluation of Antioxidant Activities and Antifungal Activity of Different Plants Species Against Pink Mold Rot-Causing Trichothecium roseum
    (Springer Heidelberg, 2017) Balkan, Bilal; Balkan, Seda; Aydogdu, Halide; Guler, Necmettin; Ersoy, Huseyin; Askin, Buket
    Trichothecium roseum causes the pink mold rot in many fruits and vegetables around the world. Due to this infection, significant losses arise in foods. In order to control this infection, plant extracts offer alternative treatment for fungicides. In this study, 50 plant species were screened for their antifungal effects against T. roseum. Anthemis arvensis, Origanum vulgare, Sambucus ebulus and Thymus longicaulis powders totally inhibited the mycelia growth of T. roseum at 10% (w/v). The powders of Chelidonium majus and Clinopodium vulgare were effective to T. roseum, with a percentage of inhibition of mycelia growth higher than 70%. MIC of A. arvensis aqueous extracts were lower than the other extracts (125 mu g/ml). Also its extracts inhibited the spore germination by 100% at 1000 mu g/ml. The incidence of the pink mold rot on tomatoes which were treated with C. majus aqueous extracts (75, 150 and 300 mg/ml) was lower than the extracts of other plants when compared to control. At concentration of 300 mg/ml, C. majus extracts prevented the disease by 71.42%. By the SEM, it was determined at the 4MIC extracts, cell wall degradation, swelling, flattening, lysis, collapsing and wrinkling on the hyphal structure. The highest total phenolic and flavanol contents were observed in O. vulgare extracts (310.49 mg GA/g) and T. longicaulis (5.24 mg CE/g). The EC50 values of the experimented extracts were lowered than the EC50 value of Gallic acid (1.87 mg/ml). Meanwhile, in all of the extracts there were phenolic compounds, protocatechuic, chlorogenic, caffeic acid and kaempferol as determined with HPLC system. This research demonstrates that C. majus aqueous extracts may possess high potential to control the pink mold rot on tomatoes as new natural antifungal products.
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    Evaluation of antioxidant and antifungal activities of several plants against agents of postharvest citrus sour rot and green mould rot
    (Ars Docendi, 2019) Balkan, Bilal; Aydogdu, Halide; Balkan, Seda; Askin, Buket; Ersoy, Huseyin
    The antifungal activities of chloroform extracts of 10 plants species belonging to Lamiaceae family, which were collected from Kirklareli (Turkey), against Geotrichum candidum, theagent of postharvest citrus sour rot and Penicillium digitatum, the agent of postharvest citrus green mould rot, were researched. The lowest Minimum Inhibitory Concentration (MIC) values against G. candidum and P. digitatum were obtained in the extract of Marrubiumperegrinum L. (250 and 125 mu g/ml). In 1000 mu g/ml, the extracts of Melissa officinalis showed 100% inhibition on the spore germination of G. candidum and P. digitatum. In the Scanning Electron Microscope (SEM) observations of G. candidum and P. digitatum that was subjected to M peregrinum extract (4MIC) degenerative changes in the hyphal morphology were seen in the form of cell wall degradation, lysis and collapsing. The highest values of total phenolics were obtained from Mentha pulegium extracts (739.57 mg GAE/g). The lowest EC50 values (0.08 mg/ml) were found in the extracts of M peregrinum and Sideritis montana. The highest flavanol content was determined from M. officialis exctracts (12.71 mg CE/mg). This study demonstrates M. peregrinum extracts may possess high antifungal activity against G. candidum and P. digitatum.
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    The flora of Yildiz Mountains (Kirklareli) Biosphere Project area
    (Tubitak Scientific & Technological Research Council Turkey, 2013) Akalin Urusak, Emine; Ozhatay, Fatma Neriman; Guler, Necmettin; Ersoy, Huseyin; Basak, Nesibe; Yesil, Yeter; Oral, Dilek
    A floristic study of the Yildiz Mountains Biosphere Project was undertaken between May and October 2009. The project area is located in the north-eastern part of European Turkey, within flora square A1-A2 (E) (Kirklareli), and covers about 1300 km(2). The list of vascular plants was prepared mainly based on specimens collected during the flora surveys of the Project and supplemented by earlier gathered specimens kept in the EDTU, ISTE, and ISTO herbaria. In the project area 1315 taxa, belonging to 505 genera and 113 families, were determined. Among these, 18 taxa are Pteridophytes, 4 Gymnospermae, 1035 Dicotyledones, and 258 Monocotyledones, The 3 largest families are Compositae (153 taxa; 11.5%), Leguminosae (119 taxa; 9.1%), and Graminae (102 taxa; 7.9%). The richest genus is Trifolium (62 taxa). Among the more significant finds of this floristic survey of the research area are 15 endemic taxa for Turkey and 29 taxa that are not recorded in the Asiatic part of Turkey, a new species for plant science (Allium rumelicum M.Kocyigit & N.Ozhatay), 3 new records for Turkey (Allium saxatile M.Bieb., Anthoxanthum aristatum Boiss., and Elatine triandra Schkuhr), and 8 new records for European Turkey.
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    A Preliminary Study on The Chemical Structure of Vicia saliva L. Accessions Collected From Natural Flora of European Part of Turkey
    (Univ Namik Kemal, 2022) Nizam, Ilker; Tenikecier, Hazim Serkan; Orak, Adnan; Tuna, Canan; Guler, Necmettin; Ersoy, Huseyin
    The objective of this study was to determine chemical composition of 24 common vetch (Vicia sativa L.) accessions, collected from natural flora in European part of Turkey. The field experiment was carried out in the 2015-2016 growing season at field experimental area of Tekirdag Namik Kemal University, Agricultural Faculty, Field Crops Department in Tekirdag/Turkey. In this study, chemical structure (nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), copper (Cu). zinc (Zn). iron (Fe), and manganese(Mn) content) of common vetch accessions were determined on hay. Chemical composition content was statistically significantly different (P <= 0.01) between accessions. According to the results obtained from field experiments, N, P, K, Ca, Mg, Cu, Zn, Fe, and Mn content of common vetch accessions varied between 0.95-3.14 %, 0.84-3.65 %, 0.22-2.44 %, 0.89-2.85 %, 0.23-0.74 %, 0.15-7.80 ppm, 0.10-5.30 ppm, 43.00-2295.20 ppm, 3.08-17.50 ppm, respectively. A wide variation was observed among common vetch accessions used in the study for N, P, K, Ca, Mg, Cu, Zn, Fe, and Mn content. Tetany and Ca/P rates of accessions changed from 0.13 - 1.54 and 0.28 - 2.19, respectively. The tetany and Ca/P rates of common vetch accessions are within suitable values for animal feeding. Ca/P ratio is above the limit value only in accessions 15-2 and 14O04. According to the correlation analysis, N was positively and significantly correlated with P, K, Mg, Cu and Fe. Similarly, P was positively and significantly correlated with N, K and Fe. Magnesium was positively and significantly correlated with N, Ca, Cu, Fe and Mn. Iron was positively and significantly correlated with N, P, Ca, Mg and Cu. As a result, accession 15K17 and 33 were identified as common vetch accessions with high mineral nutrition content.