Browsing by Author "Uzun, Y"

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Determination of Phytohormones Level in Some Dried and Fresh Macrofungi Taxa
(Ferdinand Berger Soehne, 2005) Türker, M; Demirel, K; Uzun, Y; Battal, P; Tileklioglu, B
In the present work the level of Indole-3-acetic acid (IAA), trans-Zeatin (t-Z) and Gibberellic acid's equivalents (GAs) were determined in dried and fresh specimen of 18 macrofungi taxa by High Performance Liquid Cromatograpy (HPLC). The phytohormones were extracted from fresh and dried samples of Cortinarius Fr. sp., Lentinus tigrinus (Bull.: Fr.) Fr., Coprinus atramentarius (Bull.: Fr.) Fr., Boletus impolitus Fr., Suillus granulatus (L.: Fr.) O. Kuntze, Leccinum scabrum (Bul.: Fr.) S. F Gray, Pleurotus ostreatus (Jacq.: Fr.) Kumm., Agaricus bernardii (Quel.) Sacc., Ptychoverpa bohemica (Krombholz) Boud., Agrocybe dura (Bolt.) Sing., Lycoperdon molle Pers.: Pers., Volvariella speciosa (Fr.: Fr.) Sing., Pleurotus eryngii (DC.: Fr.) Quel., Morchella esculenta Pers.: St. Amans, Coprinus comatus (Muell.: Fr.)Pers., Inocybe Fr. sp., Hebeloma longicaudum (Pers.: Fr.) Kumm. and Amanita gemmata (Fr.) Bertil. The highest GAs level in dry fungi was found in Ptychoverpa bohemica, 444.08 mu g/mg, whereas the lowest was found in Coprinus atramentarius, 22.13 mu g/mg. In fresh samples the highest and lowest GAs levels were found in Ptychoverpa bohemica, 148.65 mu g/mg and Coprinus atramentarius, 10.24 mu g/mg respectively. The highest t-Z and IAA levels in dried samples were determined in Agaricus bernardii, 92.18 mu g/mg and Agrocybe dura, 23.41 mu g/mg, whereas the lowest t-Z and IAA levels in dried samples were determined in Inocybe sp., 2.65 mu g/mg and Pleurotus ostreatus, 0.18 mu g/mg respectively. Among the fresh samples, the highest level of t-Z was found in Cortinarius sp., 4.58 mu g/mg and the lowest were detected in Morchella esculenta, 0.013 mu g/mg. The highest and lowest IAA levels in fresh samples were found in Agaricus bernardii, 1.36 mu g/mg and Agrocybe dura, 0.0 18 mu g/mg respectively.
Effect of the Air Pollutant Sulfur Dioxide on Phytohormone Levels in Some Lichens
(Parlar Scientific Publications (p S P), 2004) Battal, P; Aslan, A; Turker, M; Uzun, Y
In the present study the effect of sulfur dioxide pollution on phytohormonal levels and morphological changes in lichens was investigated. Fumigated sulfur dioxide was applied to Dermatocarpon intestiniforme (Korber) Hasse, Flavoparmelia caperata (L.) Hale, Lecanora muralis (Schreber) Rabenh., Neofuscelia pulla (Ach.) Essl., Rhizocarpon geographicum (L.) DC., Rhizoplaca melanophythalma (DC.) Leuck.& Poelt, Tephromela atra (Huds.) Hafellner, and Xanthophoria elegans (Link.) Th. Fr. in a glass chamber. Dermatocarpon intestinifiorma and Leconara muralis were found to be the most tolerant species. Significant changes in giberellic acid (GA(3))-equivalents, indole-3-acetic acid (IAA), trans-zeatin (t-Z) and abscisic acid (ABA) levels and morphological degeneration were found in most of the lichen species compared to control samples, but also cholorosis, necrosis, detachment from the substrate and chlorophyll breakdown could be observed. ABA levels increased in all lichen species from approx. 1/3 to 8-fold, whereas zeatin levels decreased between 21% and 76%. Elevated levels of GA(3)-equivalents were found in Dermatocarpon intestiniforme, Neofuscelia pulla and Leconara muralis. However, the level of GA(3)-equivalents decreased between 15% and 45% in the others. The levels of IAA were found to be 35% higher in Leconara muralis. A significant change was not determined in Dermatocarpon intestiniforme, whereas IAA values decreased from 16% to 89% in the other species examined.