Silene thymifolia Sibth. et Sm. (Caryophyllaceae) – A vulnerable species in Romania: Anatomical aspects of vegetative organs
Silene thymifolia (Caryophyllaceae) is considered a rare, near-threatened species in Romania, growing only on Black Sea coastal dunes. Anatomical aspects of the root, stem and leaf of this species are presented in this study. Root, stem and leaves were analysed by brightfield microscopy, with specific staining. The root in cross section exhibited a secondary structure, generated by the activity of phellogen, and vascular cambium, with thick cork, continuous secondary xylem rings. no pith rays, but with cortical air lacunes. The stem had a primary structure with a number of collateral vascular bundles arranged on a single circle, with thick cortical schlerenchymal layers and oxalate crystals in pith cells. The epidermis showed stomata and glandular hairs. The leaf was amphystomatic leaf, with a heterogeneous mesophyll (equifacial type) and embedded vascular bundles, with a rounded mid rib surrounded by a parenchyma sheath. The spongy tissue has some large intercellular air spaces with druses. The mechanical tissue is well developed in the root and stem and poorly developed, represented by few collenchyma elements in the mesophyll, being represented by a continuous schlerenchyma fibers band present in root and stem and collenchyma in the leaf. The secretory histological elements were represented by epidermal glandular hairs and oxaliferous cells (druses) present in stem and leaf.
Bağci Y, Biçer H (2015). Analysis of anatomical and morphological characters of the Silene cappadocica Boiss. & Heldr. and Silene spergulifolia Bieb. (Caryophyllaceae) species. Scientific Papers, Series B, Horticulture 59:293-302.
Bercu R, Jianu LD (2003). Practicum de morfologia și anatomia plantelor [Plant morphology and anatomy practicum]. “Ovidius” University Press, Constanța.
Bernasconi G, Antonovics J, Biere A, Charlesworth D, Delph LF, Filatov D, ... Widmer A (2009). Silene as a model system in ecology and evolution. Heredity 103:5-14. https://doi.org/10.1038/hdy.2009.34
Ciocârlan V (2009). Flora ilustrată a României [Illustrated flora of Romania]. Ceres, Bucharest.
Coode MJE, Cullen J (1967). Silene L. In: Davis PH [Ed]. Flora of Turkey and the East Aegean Islands. Vol. 2, University Press, Edinburgh pp 179-242.
Dihoru G, Dihoru A (1994). Plante rare, periclitate şi endemice în Flora României. Lista Roșie. [Rare, endangered and endemic plants in Romanian flora. The Red List]. Acta Botanica Horti Bucurestiensis 1994:173-197.
Dihoru G, Negrean G (2009). Cartea roşie a plantelor vasculare din România [Red book of vascular plants in Romania]. Editura Academiei Române, Bucharest.
Doniţă N, Popescu A, Paucă-Comănescu M, Mihăilescu S, Biriş AI (2005). Habitatele din România [Habitats of Romania]. Editura Tehnică Silvică, Bucharest.
Fathi Z, Jafari A, Zokai M (2010). Comparative study of stem structure and wood analysis in different species of Silene L. genus (Mashhad and countryside). Journal of Plant Environmental Physiology 5:28-35.
Gafta D, Mountford JO (2008). Manual de interpretare a habitatelor Natura 2000 din România [Handbook for interpreting Natura 2000 habitats in Romania]. Risoprint, Cluj-Napoca.
Greuter W (1995). Silene (Caryophyllaceae) in Greece: A subgeneric and sectional classification. Taxon 44:543-581. https://doi.org/10.2307/1223499
Jafari A, Zokai M, Fathi Z (2008). A biosystematical investigation on Silene L. species in North-East of Iran. Asian Journal of Plant Sciences 7:394-398. https://doi.org/10.3923/ajps.2008.394.398
Jianu LD (2014). Determination of the conservation status and measures required for the protection of some plant species with high vulnerability of the Romanian Black Sea littoral. PhD Thesis, Romanian Academy, Institute of Biology, Bucharest.
Jianu LD, Făgăraș M (2015). Several issues regarding the conservation and protection of vulnerable prammophylous species Polygonum maritimum L. and Silene thymifolia Sibth. et Sm. at the Romanian Black Sea coast. Annals of the University of Craiova - Agriculture, Montanology, Cadastre Series 15:164-172.
Keshavarzi M, Mahdavinejad M, Sheidai M, Gholipour A (2014). Anatomical study of some Silene L. species of Lasiostemones Boiss. section in Iran. Acta Biologica Szegediensis 58:15-19.
Kilic S (2009). Anatomical and pollen characters in the genus Silene L. (Caryophyllaceae) from Turkey. Botany Research Journal 2:34-44. https://doi.org/10.5505/biodicon.2019.07379
Kilic S, Ozcelik H (2008). Taxonomic revision of Silene L. sect. Brachypodae (Boiss.) Chowdhuri (Caryophyllaceae). International Journal of Natural and Engineering Sciences 2:59-63.
Metcalfe CR, Chalk L (1950). Anatomy of the Dicotyledons. Vol. 2. Clarendon Press, Oxford.
Oltean M, Negrean G, Popescu A, Roman N, Dihoru G, Sanda V, Mihăilescu S (1994). Lista roşie a plantelor superioare din România. Studii, sinteze, documentaţii de ecologie [The red list of vascular plants in Romania. Studies, syntheses, ecological documentations]. Vol. 1. Editura Academiei Române, Bucharest.
Săvulescu T (Ed) (1953). Flora României [Flora of Romania]. Vol. 2. Editura Academiei RPR, Bucharest.
Sârbu I, Nicolae S, Oprea A (2013). Vascular plants in Romania. Illustrated field determinator. Victor B. Victor, Bucharest.
Schweingruber FH (2007). Stem anatomy of Caryophyllaceae. Flora 202:281-292. https://doi.org/10.1016/j.flora.2006.07.004
Tutin TG, Heywood VH, Burgess A, Moore DM, Valentine DH, Walters SM, Webb DA (1972). Flora Europaea. Vol. 3. Cambridge University Press, Cambridge.
Yıldız K (2002). Seed morphology of Caryophyllaceae species from Turkey (Northern Anatolia). Pakistan Journal of Botany 34:161-171.
Yıldız K, Minareci E (2008). Morphological, anatomical, palynological and cytological investigation on Silene urvillei Schott. (Caryophyllaceae). Journal of Applied Biological Sciences 2:41-46.
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