Comparative leaf, stem and root anatomies of taxa Marrubium bourgaei and Marrubium heterodon (Lamiaceae)

Abstract

Marrubium genus is represented by 19 taxa in Flora of Turkey (19 species, 3 subspecies). 11 out of 22 taxa are endemic for Turkey and rate of endemism is 52%. Anatomical, histological and cytological features of the leaf, stem and root in Marrubium bourgaei and M. heterodon taxa of genus Marrubium L. from Lamiaceae family were studied and taxonomic significances were identified. The leaves were amphistomatic and hypostomatic. Stomata were amaryllis type and anomocytic as indicated by neighbouring cells. The leaves of the examined Marrubium species were bifacial (dorsiventral) and a high number of prismatic crystals were observed in the leaf mesophyll tissue. The stems were angular and stomata were observed in local areas of epidermis. The underneath of stem epidermis were a few layers of collenchyma cells. In leaf cross sections, protective tissue was comprised of periderm and a nucleus at the center consisting of tracheids.

MICROMORPHOLOGICAL AND ANATOMICAL CHARACTERS OF THE TURKISH ENDEMIC Marrubium trachyticum Boiss. (LAMIACEAE)

“…Palisade parenchyma cells were presented in upper surface of the leaf and spongy parenchyma cells had large intercellular spaces in the lower surface. These leaf anatomy characteristics coincide with those previously reported by Akgül et al (2008) and Büyükkartal et al (2016) for some other Marrubium species. In leaf cross-sections, vascular bundles were collateral type in M. trachyticum and the phloem surrounded xylem.…”

“…Watson & Dalwitz (1978) stated that stems of many members of the Lamiaceae family are quadrangular with well-defined collenchyma on each corners. This character was previously reported in some other Marrubium species (Akgül et al 2008, Büyükkartal et al 2016, Tüylü et al 2017. A well developed multilayered collenchyma was distinguishable at the corners of the stem of M. trachyticum.…”

“…There exist many anatomical studies concerning Lamiaceae in Turkey (Kaya et al 2000, Uysal 2003, Erken 2005). Although some of these studies are related with Marrubium species, detailed investigations and publications on anatomical and micromorphological characters of Turkish endemic M. trachyticum are very limited (Akgül 2004, Büyükkartal et al 2016. The present study is the first comprehensive study of anatomy and micromorphology of this endemic species.…”

Chemical Characterization of Marrubium vulgare Volatiles from Serbia

“…The lack of information in this field is pointed out by Yabrir [ 1 , 18 ]. The studies about genus Marrubium are mainly focused on taxonomical, morphological, and genetic diversity [ 4 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ].…”

Ege Bölgesi̇’nde Yayiliş Gösteren Marrubium L. Taksonlarinin Anatomi̇si̇ Ve Morfoloji̇si̇

“…& Noë ve Bulgaristan endemiği M. friwaldskyanum Boiss. türlerinin anatomik, morfolojik ve genetik çalışmalarının yapıldığı gözlenmiştir [22][23][24][25][26][27][28][29][30]. Bununla beraber, Türkiye'de yayılış gösteren Marrubium türleri ile yapılan bir revizyon çalışmasında, Türkiye Florası tayin anahtarına göre Marrubium taksonlarının teşhislerinin oldukça karmaşık olduğu ve bu durumun tek lokaliteden toplanan tip örneklerinin deskripsiyonundan kaynaklandığı belirtilmiştir [31].…”