This paper reports the results of a study of the morphology and development of glandular trichomes in leaves ofCalceolaria adscendensLidl. using light and electron microscopy. Secretory trichomes started as outgrowths of epidermal cells; subsequent divisions gave rise to trichomes made up of a basal epidermal cell, a stalk cell and a two-celled secretory head. Ultrastructural characteristics of trichome cells were typical of terpene-producing structures. Previous phytochemical studies had revealed thatC. adscendensproduces diterpenes. Comparison withC. volckmanni,which produces triterpenes, and has trichomes with eight-celled secretory heads, suggests that there could be a relationship between the type of glandular trichome and the class of terpene produced. Further work is needed to test the hypothesis and to develop trichome characters as taxonomic tools

Glandular trichomes of Calceolaria adscendens Lidl. (Scrophulariaceae): histochemistry, development and ultrastructure / Sacchetti, G; Romagnoli, Carlo; Nicoletti, M; DI FABIO, A; Bruni, A. AND POLI F.. - In: ANNALS OF BOTANY. - ISSN 0305-7364. - STAMPA. - 83:(1999), pp. 87-92.

Glandular trichomes of Calceolaria adscendens Lidl. (Scrophulariaceae): histochemistry, development and ultrastructure

ROMAGNOLI, Carlo;
1999

Abstract

This paper reports the results of a study of the morphology and development of glandular trichomes in leaves ofCalceolaria adscendensLidl. using light and electron microscopy. Secretory trichomes started as outgrowths of epidermal cells; subsequent divisions gave rise to trichomes made up of a basal epidermal cell, a stalk cell and a two-celled secretory head. Ultrastructural characteristics of trichome cells were typical of terpene-producing structures. Previous phytochemical studies had revealed thatC. adscendensproduces diterpenes. Comparison withC. volckmanni,which produces triterpenes, and has trichomes with eight-celled secretory heads, suggests that there could be a relationship between the type of glandular trichome and the class of terpene produced. Further work is needed to test the hypothesis and to develop trichome characters as taxonomic tools
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Glandular trichomes of Calceolaria adscendens Lidl. (Scrophulariaceae): histochemistry, development and ultrastructure / Sacchetti, G; Romagnoli, Carlo; Nicoletti, M; DI FABIO, A; Bruni, A. AND POLI F.. - In: ANNALS OF BOTANY. - ISSN 0305-7364. - STAMPA. - 83:(1999), pp. 87-92.
Sacchetti, G; Romagnoli, Carlo; Nicoletti, M; DI FABIO, A; Bruni, A. AND POLI F.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/585546
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