Yazar "Dinc, Muhittin" seçeneğine göre listele
Listeleniyor 1 - 15 / 15
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Anatomical and nutlet differentiation between Teucrium montanum and T. polium from Turkey(DE GRUYTER OPEN LTD, 2011) Dinc, Muhittin; Dogu, Suleyman; Koca, Asli Dogru; Kaya, BasturkTeucrium montanum L. and T. polium L. are the two closest Teucrium L. species from sect. Polium (Mill.) Schreb in Turkey. In addition, they are sympatric for some part of their range in Turkey. In this study, comparative anatomical and micromorphological studies of the two species are carried out. They have been investigated by their leaf and stem anatomical features, as well as nutlet micromorphological characteristics. The results of anatomical studies show that the anatomical characters of both taxa are observed to be similar to the general features of the family Lamiaceae anatomy, except for lacking rich collenchyma at the corners. Both taxa are similar in stem anatomy and their leaves exhibit xeromorphy. However, trichome morphology on the stems and the leaves appear to have a taxonomic value in segregation of the two taxa. Light and scanning electron microscope studies on the nutlets also show that nutlet shapes, measures and surface micromorphologies are different in the two species. Whereas nutlet surfaces are bireticulate in both species, the nutlets are larger and primary sculpturing is more distinct in T. polium than in T. montanum. Moreover, the nutlets are oblong to oblong-ovoid and larger in T. polium, but ovoid and smaller in T. montanum.Öğe Anatomy, palynology and nutlet micromorphology of Turkish endemic Teucrium sandrasicum (Lamiaceae)(VERSITA, 2008) Dinc, Muhittin; Duran, Ahmet; Pinar, Muenevver; Ozturk, MeryemIn this study, the anatomical features of the leaf and stem, besides the pollen and nutlet characteristics of Teucrium sandrasicum are investigated. T. sandrasicum, belonging to sect. Teucrium, is an endemic perennial herb growing on serpentine around Mugla province. The anatomical studies on T. sandrasicum revealed that the stem shares the general characteristics of the Labiatae family. The leaves clearly exhibit xeromorphy due to features such as the distribution of stomata on the lower surface (hipostomatic), the occurrence of guard cells below the epidermis (xeromorphic type), inrolled margins, thick cuticle layer, thick outer epidermal cell wall, a high density of trichomes and thick palisade layer of the mesophyll. The anatomical studies showed that the upper epidermal cells of the leaf include many spherocrystals. The pollen grains are prolate, medium in size, 3-colpate with verrucate ornamentation. The nutlets are ellipsoid with a reticulate-verrucate surface. The results have proven that T. sandrasicum is different from the other species of the sect. Teucrium because of the branched trichomes on the stem and the lack of eglandular trichomes on the nutlets.Öğe Comparative anatomical and micromorphological studies on Teucrium creticum and Teucrium orientale var. orientale (T. sect. Teucrium, Lamiaceae)(WILEY-BLACKWELL PUBLISHING, INC, 2009) Dinc, Muhittin; Dogu, Sueleyman; Bilgili, Bilgehan; Duran, AhmetTeucrium creticum L. and T. orientale L. var. orientale are two related taxa in Teucrium sect. Teucrium. In this study, the value of anatomical and micromorphological characters for distinguishing between these two taxa is analysed. Transverse sections of the stem, as well as both transverse and surface sections of the leaves were examined anatomically. According to the data obtained, collenchyma and sclerenchyma do grow more in T. creticum than in T. orientale var. orientale. The leaves of T. creticum are hypostomatic and have a characteristic hypodermis, which is under the upper epidermis, as well as abundant spherocrystals in the upper epidermis. The leaves of T. orientale var. orientale are amphistomatic, yet no spherocristals exists in epidermal cells and the hypodermis is absent. The results obtained from studies carried out under scanning electron microscope (SEM) shows that the nutlet micromorphology varies between the two taxa. In both taxa, the nutlet surfaces are reticulate and glandular. Eglandular hairs do occur. However, in T. orientale var. orientale, 20-60 mu m long eglandular hairs with scabrid surface occur only along the margins of the nutlets, whereas the 3/4 dorsal sides of the nutlets in T. creticum are all covered with 90-500 mu m long, smooth-surfaced hairs. Additionally, while the glandular hairs on the nutlets of T. creticum are subsessile, those on the nutlets of T. orientale var. orientale are capitate and distinctly stalked.Öğe Comparative morphological and palynological study on poorly known Viola sandrasea and its closest relative V-kizildaghensis(VERSITA, 2009) Dinc, MuhittinThe relationships between the closely related Turkish endemic species, Viola sandrasea Melchior and V. kizildaghensis M. Din double dagger & angstrom z. YÄaut +/- ldÄaut +/- rÄaut +/- mlÄaut +/-, are discussed in the present study. Viola sandrasea has been known only from a few gatherings and insufficient description since 1939. Morphological and palynological properties of it are determined in detail and compared to its closest relative V. kizildaghensis in this study. The special habitats these species occupy, their typical associates and some other ecological features are also briefly discussed. The obtained data suggests that the morphological differences between them are sometimes subtle, but the petal colour, the leaf wrinkles and the pattern of indument are distinct. The pollen characteristics clearly appear to have taxonomic value. The pollen exine ornemantion of V. sandrasea characterized by the rugulate clearly differs from that of V. kizildaghensis characterized by psilate-perforate. Moreover, the two species are seasonally and geographically isolated from each other.Öğe A Cytogenetical Study on Some Plants Taxa in Nizip Region (Aksaray, Turkey)(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2009) Oeztuerk, Meryem; Martin, Esra; Dinc, Muhittin; Duran, Ahmet; Oezdemir, Ayse; Cetin, OezlemThis 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. bicomis (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, Chicus benedictus L. var. benedictus, Tragopogon longirostris Bisch. ex Sch.Bip. var. longirostris (Asteraceae), Paracaryum ancyritanum Boiss., (Boraginaceae), Plantago major L. subsp. intermedia (Gilib.) Lange, Plantago lanceolata L. (Plantaginaceae), Erysimum thyrsoideum subsp. thyrsoideum, Paracaryum ancyritanum. and Onobrychis argyrea subsp. argyrea. Somatic metaphase chromosome numbers of Paracaryum ancyritanum, Onobrychis argyrea subsp. argyrea, Erysimum thyrsoideum subsp. thyrsoideum, and Alyssum murale subsp. murale var. murale were determined for the first time. Moreover, karyotype analyses of Cnicus benedictus var. benedictus, Matthiola longipetala subsp. bicornis and Medicago x varia were carried out for the first time in the present study.Öğe CYTOTOXIC AND ANTIVIRAL ACTIVITY OF RIBES UVA CRISPA LINN. AND RIBES MULTIFLORUM KIT. EX ROMER AND SCHULTES EXTRACTS(INT JOURNAL PHARMACEUTICAL SCIENCES & RESEARCH, 2018) Duman, Rustem; Dogan, Hasan Huseyin; Dinc, Muhittin; Tuncer, PinarTo find new antiviral agents from natural sources, methanol and aqueous extracts of leaves and fruits of Ribes uva crispa and Ribes multiflorum naturally grown in Turkey were investigated as in vitro to reveal their antiviral activities against Herpes simplex virus type 1. All experiments were performed in 96-well plates and results were measured with XTT-based colorimetric assay. Results demonstrated that all extracts have no cytotoxic effect on vero cells at 10000 mu g/mL, while they also exhibited anti-HSV-1 activity with different percentages of protection (varying between 2.65% - 50.40%) in 10000 mu g/mL which was at the highest concentration in vero cells. 50% effective concentrations (EC50) of the extracts which were determined having percentage of protection against HSV-1 at concentrations lower than 10000 mu g/mL were calculated using GraphPad Prism Version 5.03 statistics program with non-linear regression analysis. These extracts were determined to have EC50 values ranging between 9710 - 70600 mu g/mL and selectivity index (SI) are ranging between 0.14 - 1.03. On the basis of these results we believe that it would be worthwhile expanding these studies to include additional species of Turkish plants.Öğe Karyomorphological Study of Eight Centaurea L. Taxa (Asteraceae) from Turkey(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2009) Martin, Esra; Dinc, Muhittin; Duran, AhmetCentaurea L. (Asteraceae) is one of the largest genera in Turkey. The chromosome number and morphology of 8 taxa belonging to the genus Centaurea were investigated using an image analysis system. Among these taxa, the chromosome numbers were as follows: 2n = 18 in C. cariensis Boiss. subsp. niveotomentosa (Hub.-Mor.) Wagenitz, C. lycaonica Boiss. & Heldr., C. virgata Lam.. and C. Polyclada DC.; 2n = 24 in C. cyanus L.; 2n = 36 in C. virgata and C. cariensis Boiss. subsp. cariensis: 2n = 40 in C. urvillei DC. subsp. urvillei; 2n = 54 in C. tuzgoluensis Aytac & H.Duman. In 5 taxa mixoploidy was observed (C. lycaonica, C urvillei subsp. urvillei, C cariensis subsp. cariensis, C. virgata. and C. tuzgoluensis). Based on karyotypic data for this genus, 3 basic chromosome numbers in Centaurea taxa were observed (x = 9. 10. and 12). Furthermore, ideograms are given for all the Centaurea taxa studied.Öğe MICROMORPHOLOGICAL STUDIES OF LALLEMANTIA L. (LAMIACEAE) SPECIES GROWING IN TURKEY(POLSKA AKAD NAUK, 2009) Dinc, Muhittin; Pinar, Nur Muenevver; Dogu, Sueleyman; Yildirimli, SinasiMicromorphological features related to the pollen, nutlets and trichomes of Lallemantia species growing in Turkey were investigated mainly by scanning electron microscopy. Lallemantia pollen shares morphological features with subfamily Nepetoideae (tribe Mentheae, subtribe Nepetinae) pollen. However, the fine details are characteristic enough to differentiate the pollen between species. The exine is microreticulate in L. peltata and L. iberica, and reticulate-foveolate in L. canescens. Similarly. nutlet features are similar in general, but there are striking differences in surface details between species. Nutlets are black and oblong-triangular with V-shaped areoles. The surface is verrucate in L. iberica and L. canescens, and verrucate-rugulate in L. peltata. The warts are regular and separated in L. peltata, irregular and separated in L. iberica, and irregular and separated or sometimes associated in 2 to 4 groups in L. canescens. Two types of trichome, capitate and acicular. are present on the steins, leaves, calyx and bracts. The results suggest that although the distribution and micromorphology of trichomes has no taxonomic value, some pollen and nutlet micromorphological characters have the potential to serve as phylogenetic markers at the species level in the genus Lallemantia. However, pollen characteristics show no correlation with the nutlet characteristics.Öğe A New Species of Draba (Brassicaceae) from North Anatolia, Turkey(MISSOURI BOTANICAL GARDEN, 2008) Duran, Ahmed; Dinc, Muhittin; Martin, EsraDraba anatolica A. Duran & Dine, a new species of Brassicaceae collected from Kastamonu province in North Anatolia, Turkey, is described and illustrated. The species grows on rocky crevices and stony slopes in Ilgaz Mountain National Park. It is related to D. siliquosa M. Bieberstein, from which it mainly differs in its densely stellate-pubescent fruit, the 10- to 20-followed inflorescence, the stellate-pubescent stems with five to eight leaves, the petals 4.5-5 nm long and sparsely stellate-pubescent externally, and the pubescent, 8-10 mm, fruiting pedicel. The ecology, biogeography, and conservation status of the species are discussed. Fruit and seed coat surface micromorphology of D. anatolica are examined by SEM, and the chromosome number and morphology are determined, with 2n = 16.Öğe A new species of Genista sect. Spartocarpus (Fabaceae) from Karaman (Turkey)(MAGNOLIA PRESS, 2018) Dinc, Muhittin; Bagci, Yavuz[Abstract not Available]Öğe A new subspecies of Centaurea cassia (Asteraceae) from Turkey(VERSITA, 2009) Dinc, Muhittin; Duran, Ahmet; Bilgili, BilgehanA new subspecies in sect. Jacea (Mill.) DC., Centaurea cassia Boiss. subsp. dumanii M. Din double dagger, A. Duran & B. Bilgili subsp. nov., collected by the authors from South Anatolia, is described and illustrated. The new subspecies is restricted to Abies cilicica (Ant. & Kotschy) Carr. subsp. cilicica forest above Goller YaylasA +/- (C6 Adana-Kozan). Diagnostic morphological characters from C. cassia subsp. cassia are discussed. The ecology, biogeography and conservation status of the new taxon are also presented.Öğe Rediscovery of the poorly known Scorzonera argyria and its relationships in Turkey(VERSITA, 2008) Dinc, Muhittin; Duran, Ahmet; Martin, EsraScorzonera argyria Boiss. has been a poorly known endemic species classified within DD category of IUCN. It has not been collected since its introduction to the scienti. c community in 1843. Scorzonera argyria in the Turkish. ora might be considered to be a synonymy of S. eriophora. Based on the specimens collected from the type locality environs, Scorzonera argyria's detailed morphological, karyological and palynological descriptions are presented. Its two allies, S. eriophora DC. and S. pisidica Hub.-Mor., are morphologically and palynologically studied and compared to Scorzonera argyria. After the comparison conducted in the present study, S. argyria is clearly determined to be a distinct species. Consequently, in addition to some vegetative characters S. argyrea basically differs from the allied species by its typical achenes. S. argyrea and the two allied species are generally palynologically similar, but minor differences exist between them on account of their spine shapes and micro-ornamentations observed under scanning electron microscopy. The habitat S. argyrea and its typically associated species are briefly discussed. Additional data on the ecology and the conservation status of S. argyria are also given.Öğe Rhaponticoides aytachii sp nov (Asteraceae) from south Anatolia, Turkey(WILEY-BLACKWELL PUBLISHING, INC, 2009) Dogu, Sueleyman; Bagci, Yavuz; Dinc, MuhittinA new species of Rhaponticoides Vaill., Rhaponticoides aytachii Y. Baci, Dou & Dinc sp. nov. collected by the authors from south Anatolia, is described and illustrated. The new species is restricted to deprived Quercus forest openness around Dumlugoze-Sariveliler (C4 Karaman). Diagnostic morphological characters from R. amplifolia (Boiss. & Heldr.) M.V. Agab. & Greuter are discussed. The ecology, biogeography and conservation status of the new species is also presented.Öğe Taxonomic reinstatement of Teucrium andrusi from T-paederotoides based on morphological and anatomical evidences(WILEY-BLACKWELL, 2011) Dinc, Muhittin; Dogu, Suleyman; Bagci, YavuzTeucrium andrusi, described by Post from Mardin province, Turkey, was synonimized with T. paederotoides in the flora of Turkey. According to the records in the flora of Turkey T. paederotoides was a steno-endemic species, only known from the type locality in Gaziantep and from Mardin province. Specimens of T. paederotoides s.l. were collected from both localities and a detailed comparison of the plants from Gaziantep with those from Mardin revealed that the two populations were sufficiently distinct from each other to be recognised as separate species. Thus, T. andrusi Post is reinstated from the synonymy with T. paederotoides. Teucrium andrusi is morphologically different from T. paederotoides s.s. in terms of its general indumentum, leaf margin, bract and calyx shape, corolla colour and nutlet macro-micromorphology. It can be anatomically distinguished from T. paederotoides s.s. by stoma type, stomatal distribution on the leaf surface, crystal content in the cells and cuticula thickness. Ecological data related with the accompanying species also support species status for T. andrusi. While the two taxa are very similar in pollen and nutlet morphology, trichome density on the nutlets are different.Öğe Taxonomical and Chorological Notes on the Turkish Endemic Scorzonera amasiana Hausskn. & Bornm. (Asteraceae)(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2009) Dinc, Muhittin; Bagci, YavuzScorzonera amasiana Hausskn. & Bornm. is a stenoendemic species known from a few localities in Amasya Province. After the rediscovery of S. amasiana, it has been recorded from a new locality in Amasya. Using chorological and ecological data, morphological study of the collected specimens suggest that the recently described Scorzonera ekimii A.Duran is synonymous with S. amasiana. The conservation status of S. amasiana is also reviewed, based on the present distribution data.
