La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Comparative chromatographic patterns of leaf exudate components from Aloe Section Pachydendron Haw
Auteurs :	T. Reynolds, Auteur
Type de document :	Article
Dans :	Botanical Journal of the Linnean Society (125(1) 1997-09-01)
Article en page(s) :	45-70
Résumé :	Leaf exudates from individuals of 29 species included in Aloe Section Pachydendron have been separated by TLC and HPLC to reveal their phenolic components. All the zones are described by their chromatographic behaviour and UV absorption properties, but not all can be identified as known compounds so are distinguished by an arbitrary code. Section Pachydendron has been shown to be chemically heterogeneous although there are some correlations between species said to be taxonomically related. Without attaching taxonomic significance four chemical groupings can be discerned: (1) species in which chromones are prominent; (2) species in which anthrone and anthraquinone glycosides are prominent; (3) species containing mainly purple-staining phenolic compounds; and (4) species with few leaf exudate phenolic compounds. This survey emphasizes the uncertain taxonomy of the Section and the need for more extensive collection and analysis.
En ligne :	https://doi.org/10.1111/j.1095-8339.1997.tb02246.x

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