Anatomical Attributes of Two Endemic Medicinal Plant Species, Vincetoxicum albovianum and Vincetoxicum coskuncelebiana (Asclepiadoideae: Apocynaceae)

Yıl 2025, Cilt: 25 Sayı: 3, 464 - 475, 25.12.2025

Seher Güven

https://doi.org/10.17475/kastorman.1845765

Öz

Aim of study: The present study aimed to examine the anatomy of vegetative and generative organs of two Caucasian endemic medicinal plants, Vincetoxicum albovianum and V. coskuncelebiana, for the first time, to contribute to their identification.
Area of study: Plant samples of V. albovianum were collected from Batumi (Georgia) and V. coskuncelebiana from Ardahan (Türkiye).
Material and method: Anatomical examinations were performed on cross and longitudinal sections taken from the root, stem, petiole, leaf blade and pericarp, and on surface sections from leaves of plant samples stored in 70% ethanol. All sections were photographed from permanent slides, and anatomical traits were measured or scored, using a light microscope.
Main results: The examined taxa were characterised with bicollateral vascular bundles, laticifers and druse crystals in vegetative and generative organs, specific to Apocynaceae. Cross and superficial sections revealed the presence of collenchyma cells and scattered sclerenchyma cell groups in the stem and mesocarp, and paracytic, anomocytic and anisocytic stomata on the abaxial side of bifacial and hypostomatic leaves.
Research highlights: The most distinguishing features between the two species examined were the dimensions of anatomical tissues in vegetative and generative organs, and the distribution and density of epidermis and stomata cells in leaves.

Anahtar Kelimeler

Anatomy , Endemic Plant , Georgia , Türkiye , Vincetoxicum albovianum , Vincetoxicum coskuncelebiana

Teşekkür

The author would like to thank Dr. Nino Memiadze and Dr. Zurab Manvelidze from the Batumi Botanical Garden (Georgia) for their help in collecting samples of Vincetoxicum albovianum, as well as Prof. Dr. Serdar Makbul and Prof. Dr. Kamil Coşkunçelebi for their valuable comments on the manuscript.

İki Endemik Tıbbi Bitki Türü Vincetoxicum albovianum ve Vincetoxicum coskuncelebiana’nın (Asclepiadoideae: Apocynaceae) Anatomik Özellikleri

Öz

Çalışmanın amacı: Bu çalışmada, Kafkasya'ya özgü iki tıbbi bitki olan Vincetoxicum albovianum ve V. coskuncelebiana'nın vejetatif ve generatif organ anatomisinin ilk kez incelenerek bu bitkilerin tanımlanmasına katkıda bulunulması amaçlanmıştır.
Çalışma alanı: V. albovianum’a ait bitki örnekleri Batum'dan (Gürcistan), V. coskuncelebiana’ya ait bitki örnekleri ise Ardahan'dan (Türkiye) toplanmıştır.
Materyal ve yöntem: Anatomik incelemeler, %70’lik etanolde stoklanmış bitki örneklerinin kök, gövde, yaprak sapı, yaprak ayası ve perikarpından alınan enine ve boyuna kesitler ile yapraklarından alınan yüzeysel kesitler üzerinden gerçekleştirildi. Işık mikroskobu yardımıyla daimi preparatlar üzerinden tüm kesitlerin fotoğrafları çekilerek anatomik özelliklerin ölçüm ve değerlendirmeleri gerçekleştirildi.
Temel sonuçlar: İncelenen taksonlar, vejetatif ve generatif organlarında Apocynaceae’ye özgü bikollateral iletim demetleri, latisiferler ve druse kristalleri ile karakterize edildi. Enine ve yüzeysel kesitler, gövde ve mezokarpta kollenkima hücreleri ile dağınık sklerenkima hücre gruplarının ve bifasiyal ve hipostomatik yaprakların abaksiyal yüzeyinde ise parasitik, anomositik ve anizositik stomaların varlığını ortaya koydu.
Araştırma vurguları: İncelenen iki tür arasında, vejetatif ve generatif organlardaki anatomik dokuların boyutları, yapraklardaki epidermis ve stoma hücrelerinin dağılımı ve yoğunluğunun en ayırd edici özellikler olduğu belirlendi.

Anahtar Kelimeler

Anatomi , Endemik Bitki , Gürcistan , Türkiye , Vincetoxicum albovianum , Vincetoxicum coskuncelebiana

Kaynakça

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