Search results for " panic"
showing 10 items of 24 documents
Effects of mowing on fungal endophytes and arbuscular mycorrhizal fungi in subalpine grasslands
2013
International audience; In French subalpine grasslands, cessation of mowing promotes dominance of Festuca paniculata, which alters plant diversity and ecosystem functioning. One of the mechanisms underpinning such effects may be linked to simultaneous changes in the abundance of fungal symbionts such as endophytes and arbuscular mycorrhizal fungi. In field conditions, mowing reduced the abundance of the endophyte Neotyphodium sp. in leaves of F. paniculata by a factor of 6, and increased mycorrhizal densities by a factor of 15 in the soil. In greenhouse experiments, the mycorrhizal colonization of Trifolium pratense and Allium porrum increased 3- fold and 3.8- fold respectively in mown vs u…
Germination and emergence of Neslia paniculata (L.) Desv.
2019
Abstract Seed characteristics, either in size or in structure, can affect germination, hence the emergence of a plant species. In the present work germination and emergence of Neslia paniculata, a Brassicaceae species that produces fruits containing one seed covered by a hard fruit coat, was studied. Germination experiments of seed with and without the fruit coat were performed at constant temperatures from 5 to 23 °C under controlled conditions and germination was measured daily. Additionally, seeds were sown in the field and emergence was periodically followed in three sites: Almenar (Spain), Morris (USA) and Riga (Latvia). Both germination and emergence were modelled with Boltzmann and W…
Responses of above- and below-ground fungal symbionts to cessation of mowing in subalpine grassland
2017
Abstract The cessation of mowing in subalpine grasslands promotes the dominance of Festuca paniculata leading to the reduction in plant diversity. Moreover, it affects positively the abundance of Epichloe sp. inhabiting F. paniculata leaves and negatively the soil density of arbuscular mycorrhizal fungi (AMF). We explored how the cessation of mowing influences root AMF communities in F. paniculata and the neighboring plants, and Epichloe sp alkaloids. Thirteen AMF operational taxonomical units were found. The neighboring plants affected positively the abundances of Aalpin and GLOM_7 whereas the interaction plant/management type influenced significantly Claroide_1 , GLOM_1 and GLOM_7 . The N…
Status of Some Escaped Ornament Perennials in the Flora of Latvia
2019
AbstractThis paper introduces eight ornamental perennial garden escapees that were recorded by the authors of this article on Lucavsala Island, Riga (Latvia) in 2016. Our data on Achillea ptarmica cv. ‘Boule de Neige’, Artemisia ludoviciana, Asclepias syriaca, Campanula lactiflora, Heliopsis helianthoides, Lathyrus latifolius, Phlox paniculata and Rudbeckia hirta contribute to the knowledge about the occurrence of these taxa in wild. All these species are also growing in the collection of ornamental perennials in the Botanical Garden of the University of Latvia. A review of these species in Latvian herbarium collections has been conducted. Five species, Heliopsis helianthoides, Artemisia lu…
Sesquiterpene lactones and other constituents of Centaurea paniculata ssp. castellana
2002
Newest Results on the Chemistry and Pharmacology of TCM Drugs Containing Triterpene and Steroid Saponins
2012
The aim of this review is to provide newest results in the chemistry, pharmacology, and clinical studies of saponins-containing TCM drugs, some of them being listed in the Chinese Pharmacopoeia. It appears that literature on triterpene saponins is more abundant than that of steroid saponins, and ginseng occupies a prominent position in the list. However, other TCM drugs are well documented in recent years belonging to the genera Astragalus, Gynostemma, Bupleurum, Clematis, Dipsacus, Platycodon, Gypsophila, Anemarrhena, Lonicera, Paris, Dioscerea, Tribulus, and Ophiopogon. From a Pharmacological point of view, the most relevant results have been obtained with the cancer-related activity and …
Moral panic, moral regulation and essentialization of identities: Discursive struggle over unethical business practices in the Finnish national media
2013
The study sheds light on the language of moral panic and moral regulation in the Finnish news media over a 9-year period on the subject of cartels and cartel agreements. What makes the case particularly interesting is that the object of the most explicit moral panic was the introduction of new laws (leniency programmes) designed to regulate illegal cartel behaviour. The main argument is that the construction of both moral regulation and moral panic in news media takes place through essentializing discursive claims that contribute to national identity construction. The study contributes to current literature on moral panics as ideologico-discursive phenomena and throws some light on the powe…
Phytochemical profile and insecticidal activity of Drimia pancration (Asparagaceae) against adults of Stegobium paniceum (Anobiidae)
2020
Chemical and spectroscopic investigation of the bulbs of Drimia pancration resulted in the isolation of one known flavonol (1), never isolated from this plant species, and of three previously described steroidal saponins (2–4), but whose configuration at their stereogenic centres was not clearly determined. By mean of 1H NMR, 13C NMR, nuclear overhauser effects (NOE) and two-dimensional NMR spectra the full stereochemical structures of compounds 2–4 were proved and all the 1H and 13C signals were assigned. Furthermore, the methanol and butanol extracts of D. pancration were tested against adults of Stegobium paniceum beetles. Despite the non-significant results regarding the repellent activ…
Retoryka strachu w czasie pandemii Covid-19. Przypadek Emmanuela Macrona
2021
Artykuł prezentuje wyniki analizy telewizyjnego orędzia prezydenta Francji Emmanuela Macrona z dnia 16 marca 2020 roku. Stanowi ono przyczynek do wskazania na znaczenie we współczesnym dyskursie politycznym odwoływania się do logiki strachu i poczucia zagrożenia. Analiza treści pozwoliła wskazać najważniejsze cechy retoryki strachu, jaka zdominowała prezydenckie przemówienie pełne sensacyjnych metafor i wojennych odniesień, będących doskonałym przykładem moralnej paniki w czasie kryzysu, w którym zwiększa się zapotrzebowanie na informację. Analizą dyskursu objęto leksykalne i składniowe środki językowe, gdzie niezwykle częste metafory wojenne dają możliwość manipulacji opinią społeczną i wd…