Browsing by Author "Armagan, Metin"

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Analysis of Taxonomic and Geographic Patterns of Turkish Veronica Orientalis Using Nuclear and Plastid Dna and Morphological Data
(Springer Wien, 2014) Sonibare, Mubo A.; Armagan, Metin; Ozgokce, Fevzi; Yaprak, Ahmet Emre; Mayland Quellhorst, Eike; Albach, Dirk C.
Veronica orientalis and related species form one of the taxonomically most challenging subgroups within the genus Veronica. Hybridization and polyploidization on the one hand and convergent character evolution on the other have made delimitation of species difficult. Amplified fragment length polymorphisms and plastid DNA markers were used in conjunction with 54 morphological characters to study relationships among 35 accessions of V. orientalis Mill. as well as other closely related species of Veronica occurring in Turkey and adjacent areas of Georgia and Armenia. In addition, ploidy levels were estimated for 15 accessions using flow cytometry. Diploid to hexaploid individuals were detected in V. orientalis. Analysis of DNA markers demonstrated the non-monophyly of V. orientalis, especially with regard to V. fuhsii and V. multifida from Eastern Turkey, but nuclear and plastid DNA markers are largely incongruent. Neither demonstrates a clear biogeographic pattern. The morphological analysis reveals the distinction of V. orientalis subsp. carduchorum, which is weakly retrieved in some molecular analyses and some clustering according to geography. V. multifida is not monophyletic likely due to parallel evolution of pinnatifid leaves east and west of the Anatolian diagonal.
Crepis Gemicii Sp Nov (Asteraceae) From East Anatolia, Turkey
(Wiley-blackwell Publishing, inc, 2011) Yildirim, Hasan; Bingol, Omer; Armagan, Metin
Crepis gemicii Hasan Yildirim, Omer Bingol & Metin Armaan (Asteraceae) is described as a new species. Diagnostic morphological characteris, full descriptions and detailed illustrations are given on the basis of the type material. Crepis gemicii is restricted to the province of Van in east Anatolia, Turkey. It is releated to and compared with C. bupleurifolia (Boiss.) Freyn & Sint., C. paludosa (L.) Moench and C. pannonica (Jacq.) C. Koch. Its' seed and pollen ultrastructure is described based on studies with SEM.
Effects of Cichorium Intybus Extract on Seizure Development, Bcl-2, Siklin B1 Ve Β-Tubulin Levels in Pentylenetetrazole-Kindling Model of Epilepsy in Rats
(Wiley-blackwell, 2015) Erkec, Ozlem Ergul; Meral, Ismail; Kara, Mehmet; Kocyigit, Abdurrahim; Armagan, Metin; Ozer, Omer Faruk
Effects of Cichorium Intybus on Gabaa Receptors and Apoptosis in Pentylenetetrazole-Induced Kindling in Rats
(Kare Publ, 2021) Ergul Erkec, Ozlem; Meral, Ismail; Kara, Mehmet; Esrefoglu, Mukaddes; Tok, Olgu Enis; Ustunova, Savas; Armagan, Metin
Objectives: This study was designed to determine the effects of Cichorium intybus (CI) on apoptosis and GABA(A) receptor density in the brains of rats in pentyleneterazole induced kindling. Methods: The rats were divided into three groups: Control group, pentylenetetrazol administered (PTZ) group, and PTZ+CI extract administered (PTZ+CI) group. Control group received only physiological saline (0.5 ml). PTZ (35 mg/kg) injected to the animals in the PTZ and PTZ+CI groups. The CI extract (200 mg/kg) was also administered to the PTZ+CI group. A 75 mg/kg challenge dose of PTZ was administrated to the PTZ treated groups, on the 12th injection. Results: A significant increase was found in the number of neurons expressing the GABA(A) receptor in the brain tissue (hippocampus and cerebral cortex) of the PTZ group when compared to the control. The density of GABA(A) receptor of the neurons in the cerebral cortex significantly increased in PTZ administered groups compared to the control.The number of apoptotic neurons was found non-significant between groups in the brain. Conclusion: CI treatment prolonged the onset of the first seizure activity and seizure latency at a convulsive dose, and kept the number of GABA(A) receptors close to that of the control in the hippocampus.
Gundelia Purpurascens (Compositae) Is a Synonym of G. Rosea
(Ferdinand Berger Soehne, 2022) Vitek, Ernst; Armagan, Metin
The recently published Gundelia purpurascens (Bornm.) firat is shown to be a synonym of G. rosea. Gundelia tournefortii as understood by AL-TAEY & HOSSAIN (1984) can be assigned to G. TEHRANICA VITEK & NOROOZI. For the two species a preliminary distribution map is given.
Gypsophila Munzurensis (Caryophyllaceae), a New Species From Tunceli (Turkey)
(Magnolia Press, 2016) Armagan, Metin
A new annual species belonging to the genus Gypsophila sect. Hagenia-G. munzurensis-is here described and compared with the similar G. pilosa as part of the study of the flora of Tunceli (Turkey). G. munzurensis differs from G. pilosa by its shape of the leaves and petals, indumentum of stem, pedicel and calyx. A detailed description, and original photographs are provided as well as the current distribution area and the conservation status are also discussed.
Iridoid Glucosides From Eremostachys Moluccelloides Bunge
(Wiley-v C H verlag Gmbh, 2007) Calis, Ihsan; Guevenc, Ayseguel; Armagan, Metin; Koyuncu, Mehmet; Gotfredsen, Charlotte H.; Jensen, Soren R.
From the aerial parts of Eremostachys moluccelloides BUNGE, a new iridoid glucoside, lamalbidic acid (7). was isolated as its choline salt 7a together with six known iridoid glucosides, 5-deoxysesamoside (1). 6 ss-hydroxy-7-epiloganin (2), lamalbide (3), shanzhiside methyl ester (4), sesamoside (5), and 5-deoxypulchelloside 1 (6). The structures of 7a and 7 (obtained from 7a) were elucidated by spectroscopic (UV. IR, 1D- and 2D-NMR, and ESI-MS) methods.
Isoetes Vanensis (Isoetaceae) Sp Nov From Turkey
(Magnolia Press, 2016) Zare, Golshan; Keskin, Mustafa; Dogru-Koca, Asli; Armagan, Metin
A previously undescribed species, Isoetes vanensis, is described and illustrated. Isoetes vanensis is distinguished from allied species by its papery scales and small megaspores bearing a low tuberculate texture and a fimbriate-ecuelate micro-ornamentation. A table of comparative diagnostic characters and character states for I. vanensis and allied taxa, a geographic distribution map, and SEM images of megaspores and microspores showing ornamentation patterns are included.
A New Record for the Flora of Türkiye: Cousinia Mazu-Shirinensis Rech.f
(Kahramanmaras Sutcu Imam Univ Rektorlugu, 2024) Fidan, Mehmet; Pinar, Suleyman Mesut; Eroglu, Huseyin; Armagan, Metin
Cousinia mazu-shirinensis taxon was recorded for the first time in the Flora of T & uuml;rkiye from & Scedil;& imath;rnak province, located in the southeast of T & uuml;rkiye. The morphological characteristics of the C. mazu-shirinensis, the map of the distribution area, and the photographs of its natural habitat are also presented in the study.
A New Record for Turkey: Centaurea Aziziana Rech.f. (Asteraceae)
(Tubitak Scientific & Technological Research Council Turkey, 2009) Armagan, Metin; Unal, Murat
Centaurea aziziana Rech.f. (Asteraceae) is recorded for the first time (B9 Van province) for the flora of Turkey. The diagnostic characters of C. aziziana are described and its habitat and conservation are discussed.
Notes on the Genus Gypsophila (Caryophyllaceae) in Turkey, With a Description of G. Guvengorkii Sp Nov
(Magnolia Press, 2017) Armagan, Metin; Ozgokce, Fevzi; Celik, Ali
Gypsophila guvengorkii (Caryophyllaceae) is described as a new species from Karabk province, Turkey. Morphology, distribution in Turkey, notes on ecology, and the conservation status are provided, as well as a comparison with the similar species G. brachypetala, G. briquetiana, and G. davisii. Additionally, an emended description of G. brachypetala is given. G. patrinii is excluded from the Flora of Turkey since the specimens collected from Dogubayazit, which were previously identified as G. patrinii, actually refer to G. transcaucasica, which represents a new record for Turkey.
Seed Micromorphology of Acanthophyllum C.a. Mey. (Caryophyllaceae) Genus in Turkey
(Kastamonu Univ, Orman Fak, 2017) Bulbul, Ali Savas; Armagan, Metin; Varlik, Kader
In this study, seeds of 5 species of Acanthophyllum in Turkey were examined with stereomicroscope and scanning electron microscope (SEM) to evaluate the systematic significance of seed microstructure. The seeds of Acanthophyllum were characterised by oblong or obovate shape. Seeds dorsal and ventral side are generally convex. The largest seeds are found in A. acerosum (2.45 mm in length and 1.16 mm in width). The smallest seeds are found in A. verticillatum (1.61 mm in length and 0.84 mm in width). Seeds surface of Acanthophyllum species are fine tuberculate arranged with elongate or polygonal cells like jigsaw puzzle. The shape of suture is sinuous, undulate or dentate. The colour of seed is reddish-brown or yellowish-brown. The radicle is on the one side of each seed and just out beyond the hilar notch. Colour of seeds, seed length and width, hilum length and width, suture shape, testa cell shape and the number of suture points per plate are important characters in differentiating Acanthophyllum species. By this study, similarities and differences between the species of Acanthophyllum genus are revealed and contributed to taxonomic studies.