Glandular Trichomes of Teucrium scorodonia L. Ultrastructure and Secretion

Sevinate-Pinto, Isabel; Antunes, Teresa

doi:10.1016/s0367-2530(17)30471-1

Cited by 6 publications

(1 citation statement)

References 12 publications

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“…Tubular elements inside plastids were also described by Sevinate-Pinto and Antunes (1991), who related them to secretory processes. Plastids are involved in the production of enzymes of the mevalonic acid pathway (Curry, 1987), essential oil and monoterpene precursors (references in Sevinate-Pinto and Antunes, 1991), not only in osmophores but in glandular hairs too.…”

Section: Cytology Anthesismentioning

confidence: 99%

Ultrastructure of the corona of scented and scentless flowers of Passiflora spp. (Passifloraceae)

García

Galati

Hoc

2007

Flora - Morphology, Distribution, Functional Ecology of Plants

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Section: Cytology Anthesismentioning

confidence: 99%

Ultrastructure of the corona of scented and scentless flowers of Passiflora spp. (Passifloraceae)

García

Galati

Hoc

2007

Flora - Morphology, Distribution, Functional Ecology of Plants

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Compositions of Essential Oils and Trichomes of Teucrium chamaedrys L. subsp. trapezunticumRech. fil. and subsp. syspirense (C. Koch) Rech. fil.

Kaya

Demırcı

Başer

2009

Chemistry & Biodiversity

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Teucrium chamaedrys L. is a member of the Lamiaceae family and is represented in the Flora of Turkey by six subspecies. The aerial organs of T. chamaedrys L. subsp. trapezunticum Rech. fil. and subsp. syspirense (C. Koch) Rech. fil. bears numerous eglandular and glandular trichomes. Eglandular trichomes are simple, long-multicellular with cuticular micropapillae, and glandular hairs are of peltate and capitate types. The peltate hairs consist of a basal cell, a short unicellular stalk, and multicellular secretory head, and the capitate ones possess 1-2 stalk cells and one glandular head cell. The aerial parts were subjected to microdistillation for the isolation of volatiles. The analysis was simultaneously performed by using gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). The major components were characterized as beta-caryophyllene (18%), nonacosane (12%), germacrene D (11%), caryophyllene oxide (7%), and alpha-pinene (7%) for subsp. trapezunticum, and caryophyllene oxide (23%), alpha-pinene (11%), and caryophyllenol II (5%) for subsp. syspirense.

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Composition of the essential oil and micromorphology of trichomes of Teucrium salviastrum, an endemic species from Portugal

Cavaleiro

Salgueiro

Antunes

et al. 2002

Flavour & Fragrance J

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The morphology, distribution and release mechanism of the glandular trichomes of Teucrium salviastrum Schreber were studied, along with the chemical composition of the essential oils. Peltate and capitate trichomes are present on both vegetative and reproductive organs. In this study, particular emphasis is given to the capitate trichomes with long multicellular stalks. These trichomes are very abundant, and the secretion material is released by cuticule rupture on the top of the head cells. Also noteworthy is the presence of peltate trichomes on the upper surface of the ovary. Although already described in some Lamiaceae, these trichomes have not been recorded previously on any other Teucrium species. The composition of the essential oil was studied using mainly GC and GC-MS. The oils isolated from leaves, collected during the flowering and post-flowering phases of the plant, as well as the oil isolated from the flower heads, exhibited a similar chemical composition. Nevertheless, the oils showed remarkable differences in composition when compared to those reported in the literature for the same species. The present study has shown that our oil consisted mainly of E-ˇ-farnesene (26.1-29.3%), E-caryophyllene (19.1-24.1%) and germacrene D (13.7-21.6%). The major compound of our samples, E-ˇ-farnesene, is reported for the first time for this species.

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Glandular Trichomes of Teucrium scorodonia L. Ultrastructure and Secretion

Cited by 6 publications

References 12 publications

Ultrastructure of the corona of scented and scentless flowers of Passiflora spp. (Passifloraceae)

Ultrastructure of the corona of scented and scentless flowers of Passiflora spp. (Passifloraceae)

Compositions of Essential Oils and Trichomes of Teucrium chamaedrys L. subsp. trapezunticumRech. fil. and subsp. syspirense (C. Koch) Rech. fil.

Composition of the essential oil and micromorphology of trichomes of Teucrium salviastrum, an endemic species from Portugal

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