Abstract

HISTOCHEMICAL ANALYSIS OF ROOTS OF RUMEX DENTATUS AND RUMEX PULCHER FLORA OF PALESTINE

*Dr. Khaled Taha Muhammad Abu Thaher

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Abstract

Secondary receptors are chemical molecules that are active in therapeutic plants and their accumulation sites within tissues can be found by histochemical analysis, which cannot be done using traditional phytochemical testing. In this research, the histochemistry of the roots of two types of sorrel (Rumex), namely Rumex pulcer and Rumex dentatus, from Palestinian plants, was studied. This study is considered the first of its kind, as the presence and location of phytochemical compounds was detected using a specific method of reagents. The results showed that these roots contain antraquinone compounds, phenolic compounds, and tannins. Anthraquinones have been found to accumulate in the conducting elements of the phloem, the surrounding epidermis, the third to fourth layers of the parenchyma, the developing vascular membranes, and the tracheal elements of the secondary xylem. While phenolic derivatives, especially (leucoanthocyanidins and catechins), accumulate in the outer skin layers and the three to four layers of cortical tissue that connect the tracheal elements in the secondary xylem to the membranes of the developing vessels, in addition to the phloem, sclera, and cambium elements in the primary elements and individual cambium, and secondary xylem vessels. As for tannins, they accumulate in the medullary ray cells and secondary phloem.

Keywords: Rumex, Histochemistry, Active ingredients, Plants of Palestine.