Search results for "Stachys"

A new parasitoid (Hymenoptera: Braconidae: Aphidiinae) of the invasive bamboo aphidsTakecallisspp. (Hemiptera: Aphididae) from Western Europe

2017

ABSTRACTA long-term survey of tritrophic (plant–aphid–parasitoid) associations in the urban ecosystems of Lleida (Catalonia) and Paris (France) resulted in the detection of associations of two bamboo aphids, Takecallis arundinariae (Essig) and Takecallis taiwanus (Takahashi), respectively, with a new aphid parasitoid species. Trioxys remaudierei Starý & Rakhshani sp. nov. is described and illustrated as a unique parasitoid of Takecallis aphids outside the area of their origin. The new species is easily distinguishable from its congeners in having the ventral prongs of the abdomen fused over two-thirds of their length, then bifurcated towards the tip. The only morphologically similar species…

Nardostachys jatamansi (D.Don) DC.: An invaluable and constantly dwindling resource of the Himalayas

2020

International audience; The use of medicinal plant species for different therapeutic effects is well recognized around the globe. Nardostachys jatamansi (D.Don) DC. (Family: Caprifoliaceae Juss.), commonly known as Indian spikenard is a critically endangered medicinal plant which grows at high altitudes in the alpine and sub-alpine regions of the Himalayas. Its medicinal use is well-recognized in the Bhutanese, Chinese, Indian, Japanese, Nepalese and Tibetan medicine. Moreover, its medicinal properties are well established in traditional medicines including Ayurveda, Ben-Cao- Shi-Yi, Homer's Iliad, the Old Testament, as in conventional systems. The increasing national and international dema…

Notulae to the Italian alien vascular flora: 2

2016

In this contribution, new data concerning the Italian distribution of alien vascular flora are presented. It includes new records, exclusions and confirmations for Italy or for Italian administrative regions for taxa in the genera Ageratum, Aster, Buddleja, Cedrus, Centranthus, Cephalotaxus, Clerodendrum, Cotoneaster, Cyperus, Honorius, Lantana, Ligustrum, Morus, Muscari, Oenothera, Opuntia, Platycladus, Plumbago, Pseudotsuga, Sedum, Sporobolus, Stachys, Ulmus and Yucca. A nomen novum, Stachys talbotii, is proposed as a replacement name for Sideritis purpurea.

Diterpenoids from the roots and aerial parts of the genus Stachys

2011

The occurrence of diterpenoids from roots and aerial parts of the species of the genus Stachys (Lamiaceae, Labiatae) is reviewed. The presence of these diterpenoids in other taxa and their biological properties have been also reviewed

Comparative chemical composition, free radical-scavenging and cytotoxic properties of essential oils of six Stachys species from different regions of…

2009

Abstract The chemical composition of essential oils of six Stachys species, S. cretica L. ssp. vacillans Rech. fil., S. germanica L., S. hydrophila Boiss., S. nivea Labill., S. palustris L. and S. spinosa L., obtained by hydrodistillation, was studied by GC and GC–MS. All the oils have in common a great percentage of fatty acids and esters (24.2–58.5%) and a high amount of sesquiterpenes (16–35.9%), with the exception of the oil from S. palustris , which consisted mainly of carbonylic compounds (25.4%). The antioxidant activity by DPPH test and the antiproliferative activity on a series of human cancer cell lines (C32, amelanotic melanoma and ACHN, renal cell adenocarcinoma) were investigat…

Cyclic heptapeptides from the soil-derived fungus Clonostachys rosea

2019

Abstract Three new cyclic heptapeptides (1–3) together with three known compounds (4–6) were isolated from a solid rice culture of the soil-derived fungus Clonostachys rosea. Fermentation of the fungus on white beans instead of rice afforded a new γ-lactam (7) and a known γ-lactone (8) that were not detected in the former extracts. The structures of the new compounds were elucidated on the basis of 1D and 2D NMR spectra as well as by HRESIMS data. Compounds 1 and 4 exhibited significant cytotoxicity against the L5178Y mouse lymphoma cell line with IC50 values of 4.1 and 0.1 µM, respectively. Compound 4 also displayed cytotoxicity against the A2780 human ovarian cancer cell line with an IC50…

The chemical composition of the aerial parts essential oil of S. spreitzenhoferi Heldr. (Lamiaceae) growing in Kythira island (Greece)

2022

Stachys is a large genus of economically important plants belonging to Lamiaceae family that includes about 300 species as annual or perennial herbs. Several species of this genus are extensively used in various traditional medicines. In the present study the chemical composition of the essential oil from aerial parts of Stachys spreitzenhoferi Heldr., a very rare plant, belonging to Section Candidae, endemic of South Greece and collected in the island of Kythira, was analysed by GC-MS. No one reports have been previously published on this species. The result showed the presence of large quantity of diterpenoids with manoyl oxide (22.1%), as the most abundant component. Other metabolites pr…

Labdane Diterpenes from Stachys plumosa

2000

Three new labdane diterpenoids were isolated from the aerial parts of Stachys plumosa. The first two (1, 2) were the dextrorotatory enantiomers of the known 6-deoxyandalusol and 13-epijabugodiol. Structures were determined using NMR and MS techniques. The absolute stereochemistry of the third compound (3) was not experimentally proved.

Occurrence of (+)-6-desoxyandalusol in Stachys ionica and Stachys distans

2002

Diterpenoids in the essential oils from the genus Stachys

2009

The occurrence of diterpenoids in the essential oils of the species of the genus Stachys (Lamiaceae, Labiatae) is reviewed.