Türkiye'de tıbbi bitkilerin korunmasına genel bakış

Medicinal plants are a special area that needs to be evaluated with different parameters than the general biodiversity threatening due to intense collection pressure. In the study, Turkey's plant diversity, requirements and strategies for sustainable use of Turkish medicinal plants, criticizing and planning of data for the protection of medicinal plants have been evaluated using standards of the Guidelines on the Conservation of Medicinal Plants by WHO, IUCN, WWF and Traffic. In addition, the richness of traditional medicinal plant uses in Turkey, the concept, and usage potentials, administrative requirements for the protection, creation of the in situ and ex situ conservation areas and recommendations for the future have been presented.Tıbbi bitkiler yoğun bir toplama baskısı nedeniyle genel biyoçeşitlilik üzerindeki baskıdan daha farklı parametrelerle değerlendirilmesi gereken bir alandır. Çalışmada, Türkiye’nin bitki zenginliği, tıbbi bitki olarak kullanılan bitkilerin sürdürülebilir kullanımı için gereksinimler ve stratejiler, verilerin ve tıbbi bitkilerin korunmasına yönelik planlamalar, WHO, IUCN, WWF ve Traffic tarafından hazırlanmış Tıbbi Bitkileri Koruma Kılavuzu’na göre değerlendirilmiştir. Ayrıca Türkiye’nin geleneksel tıbbi bitki kullanım zenginliği, tıbbi bitki kavramı ve kullanım potansiyeli, korumaya yönelik yönetimsel gereksinimler, in situ ve ex situ koruma alanlarının oluşturulması ve geleceğe yönelik öneriler sunulmuştur

Investigation of antioxidant and anticonvulsant activity of Hypericum triquetrifolium Turra

Epilepsy is a state characterized by sudden, recurrent epileptic seizures that are not initiated by an identifiable event. There are various studies has been shown that Hypericum species may be used for their anticonvulsant potentials. Besides, the relationship between anticonvulsant activity and antioxidant effect has already been shown in the literature. In the current study, H. triquetrifolium was investigated for the first time for its potential antioxidant and anticonvulsant potential using in vitro and in vivo test models. H. triquetrifolium extracts were tested with DPPH assay, FRAP assay, copper (II) ion reducing antioxidant capacity assay, and acetylcholinesterase inhibitory activity assay to understand their antioxidant potential. Especially, methanolic extract of H. triquetrifolium was shown the highest antioxidant activity. Moreover, a pentylenetetrazole (PTZ, 80 mg/kg, i.p.)-induced seizure model was conducted to analyze the anticonvulsant activities of H. triquetrifolium extracts in mice. In addition, this study revealed that H. triquetrifolium decreased the ratio of severe seizures and increased the mean onsite of mortality and survival rate in a dose-dependent manner. It is thought that the anticonvulsant effect may be either related to the antioxidant potential of H. triquetrifolium or its interference in the GABAergic system

Anatomy and Trichome Micromorphology of Endemic Ballota pseudodictamnus subsp. lycia (Lamiaceae)

In this study, the anatomical features of Ballota pseudodictamnus (L.) Benth. subsp. lycia Hub.-Mor. (Lamiaceae), endemic taxa from Turkey are examined and evaluated by light (LM) and scanning electron microscopy (SEM). Different trichome types (glandular -including Lamiaceae type, capitate and peltate- and non-glandular trichomes) are observed. The densest trichome type is dendroid trichomes on the aerial part of the plant. The leaf is bifacial and amphistomatic. In the petiole, there are two collateral vascular bundles in the centre and one small vascular bundle in each corner. The prismatic crystals are present in the pith area of the stem. Results are compared with other studies in the literature. The anatomical characteristics of the stem, petiole, lamina and measurements are presented additionally trichome micromorphology is given for the first time

Pollen morphology of 5 centaurea l. And 3 psephellus cass. taxa in Turkey Türkiye’den 5 centaurea l. Ve 3 psephellus cass. taksonunun polen morfolojileri

© 2019, Centenary University. All rights reserved.In this study, pollen morphology of 5 Centaurea (C. antitauri, C. coronopifolia, C. iberica, C. patula, and C. pterocaula) and 3 Psephellus (P. hypoleucus, P. pulcherrimus, and P. simplicicaulis) species distributed in Turkey have been examined based on the exine structure and sculpturing. Previous papers drew attention to great value of pollen morphology in the taxonomy of Centaurea and divided genus from Centaurea as Rhaponticoides, Psephellus and Cyanus. Pollen grain characters of 8 species were investigated by light microscope (LM). For morphological analysis, pollen grains were prepared according to Wodehouse (1935). Voucher specimens are deposited in the ISTE (Herbarium of Faculty of Pharmacy, Istanbul University). Types of pollen grains are tricolporate, isopolar and tectum complete of all specimens studied. The largest pollen in Psephellus hypoleucus whereas the smallest pollen in Centaurea iberica. The exine sculptures in the rest of the examined specimens are scabrate, microechinate or reticulate. The polar axis (P) ranges from 32.78±1.805 μm to 40.42±1.976 μm in studied Centaurea species and 36.76±0.8109 μm to 40.5±1.3092 μm in studied Psephellus species. The equatorial axis ranges from 30.77±1.43 μm to 39.20±0.632 μm in studied Centaurea species and 37.4878±2.1313 μm to 40.5789±1.7566 μm in studied Psephellus species. All of the morphological parameters investigated are given in detailed. Pollen shape of 8 species, which are we have been studied, is the same shape but their sizes are different. And there are some differences on the exine surface (sculpture). In the taxonomy pollen type gives an idea for these genera and it is also better to combine it with morphological, karyological and molecular data