STRUCTURE OF LEAVES AND PHENOLIC ACIDS IN KALANCHOË DAIGREMONTIANA RAYM.-HAMET & H. PERRIER
Mykhaylo ChernetskyyBotanical Garden, Maria Curie-Skłodowska University, Sławinkowska 3, 20-810 Lublin, Poland
Anna WoźniakDepartment of General Ophthalmology, Medical University of Lublin, Chmielna 1, 20-079 Lublin, Poland
Agnieszka Skalska-KamińskaDepartment of General Ophthalmology, Medical University of Lublin, Chmielna 1, 20-079 Lublin, Poland
Beata ŻurawDepartment of Botany, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland
Eliza BlicharskaDepartment of Botany, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland
Robert RejdakDepartment of General Ophthalmology, Medical University of Lublin, Chmielna 1, 20-079 Lublin, Poland
Helena DonicaDepartment of Clinical Biochemistry, Medical University of Lublin, Staszica 16, 20-081 Lublin, Poland
Elżbieta Weryszko-ChmielewskaDepartment of Clinical Biochemistry, Medical University of Lublin, Staszica 16, 20-081 Lublin, Poland
Kalanchoë daigremontiana leaves contain phenolic compounds, which are one of the determinants of plant therapeutic properties. Light and scanning electron microscopes were used to analyse the structure of leaves. The main aims of the study included the analysis of the anatomy of leaves, localisation of phenolic compounds, and identification of phenolic acids. The thickness of the amphistomatic leaf blades, the number, the size of stomata, and the value of stomatal index, as well as the structure of the parenchyma cells have indicated that K. daigremontiana is adapted to arid environments. The histochemical assays revealed the presence of phenolic idioblasts in the leaf blades and petioles. The idioblasts were located in the epidermis, subepidermal layer, a deeper portion of the mesophyll, and in the sheaths of vascular bundles. The phytochemical analyses of leaves demonstrated the presence of gallic, ferulic, caffeic, p-coumaric, and protocatechuic acids in the form of esters. We carried out the research of the anatomical structure of K. daigremontiana leaves, which has been insufficiently documented to date. We have also revealed new localisation of phenolic compounds in the leaf tissues of this species.
Keywords:Kalanchoë, tissues, phenolic idioblasts, phenolic acids
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