102,320 research outputs found
Muscari pallens Fischer 1812
No full textMuscari pallens (M.Bieb.) Fisch. Muscari pallens (M.B) Fischer. [Type specimen: Royal Botanic Garden Edinburgh (E), E00326157], Hyacinthus pallens No: 8520 [Syntype: Herbarium Universitatis Mosquensis (MW), MW0591727]. Muscari pallens [Geneva Herbarium—Boissier’s Flora Orientalis (G-BOIS), G00753346, G00753347].Published as part of Uysal, Tuna, Aksoy, Ahmet, Bozkurt, Meryem & Ertuğrul, Kuddisi, 2022, A new grape hyacinth from East Anatolia (Turkey) Muscari vanensis (subgenus Botryanthus), pp. 53-71 in Phytotaxa 536 (1) on page 66, DOI: 10.11646/phytotaxa.536.1.3, http://zenodo.org/record/622424
Glycosides from Muscari armeniacum and Muscari botryoides. Isolation and structure of Muscarosides G-N
No full textGlycosides from Muscari armeniacum and Muscari botryoides. Isolation and structure of Muscarosides G-N
No full textModal analysis of the wake past a marine propeller
No full textModal decomposition techniques are used to analyse the wake field past a marine propeller achieved by previous numerical simulations (Muscari et al. Comput. Fluids, vol. 73, 2013, pp. 65-79). In particular, proper orthogonal decomposition (POD) and dynamic mode decomposition (DMD) are used to identify the most energetic modes and those that play a dominant role in the inception of the destabilization mechanisms. Two different operating conditions, representative of light and high loading conditions, are considered. The analysis shows a strong dependence of temporal and spatial scales of the process on the propeller loading and correlates the spatial shape of the modes and the temporal scales with the evolution and destabilization mechanisms of the wake past the propeller. At light loading condition, due to the stable evolution of the wake, both POD and DMD describe the flow field by the non-interacting evolution of the tip and hub vortex. The flow is mainly associated with the ordered convection of the tip vortex and the corresponding dominant modes, identified by both decompositions, are characterized by spatial wavelengths and frequencies related to the blade passing frequency and its multiples, whereas the dynamic of the hub vortex has a negligible contribution. At high loading condition, POD and DMD identify a marked separation of the flow field close to the propeller and in the far field, as a consequence of wake breakdown. The tonal modes are prevalent only near to the propeller, where the flow is stable; on the contrary, in the transition region a number of spatial and temporal scales appear. In particular, the phenomenon of destabilization of the wake, originated by the coupling of consecutive tip vortices, and the mechanisms of hub-tip vortex interaction and wake meandering are identified by both POD and DMD
Profiling of polyphenols and sesquiterpenoids using different extraction methods in Muscari turcicum, an endemic plant from Turkey
No full textMuscari turcicum, endemic to south Anatolia, Turkey, represents an unexplored crop plant, with potential therapeutic uses related to its phytochemical composition. In this work, the in vitro antioxidant and enzyme inhibitory activity of flower, leaf and bulb extracts, obtained using different extraction methods were evaluated. A comprehensive polyphenolic and sesquiterpene lactones profiling of the different extracts was also undertaken. For this purpose, UHPLC-QTOF mass spectrometry allowed us to putatively annotate 280 phytochemical compounds of which 162 were polyphenols and 118 were sesquiterpene lactones. The most abundant polyphenols were flavonoids (77 compounds), phenolic acids (34 compounds), and low molecular weight phenols (38 compounds). Muscari turcicum leaf methanol extract possessed the highest concentrations of low-molecular-weight phenolics, phenolic acids, and sesquiterpene lactones (20.61, 7.00, and 3.44 mg standard equivalent/g, respectively). The water extract of M. turcicum flower obtained by infusion showed prominent reducing (120.52 mg Trolox equivalent [TE]/g mg TE/g for both CUPRAC and FRAP) and radical scavenging potential (91.39 mg TE/g, for DPPH assay). Besides, M. turcicum flower methanol extract (13.44 mg EDTA equivalent/g) showed the highest metal chelating activity. Interestingly, methanol extracts obtained by Soxhlet extraction and maceration actively inhibited tyrosinase (129.36 mg kojic acid equivalent/g) and cholinesterases (5.15 mg galantamine equivalent [GALAE]/g and 6.16 mg GALAE/g, for acetyl and butyryl cholinesterase) respectively. Strong correlations (p < 0.01) were observed between polyphenols/sesquiterpenoids and observed biological activities. Scientific evidences presented in this study has provided baseline data for bioprospection of novel pharmaceutical/cosmetic candidates from Muscari turcicum, thus supporting its therapeutic exploitation
FIGURE 1 in Taxonomic resurrection of Muscari wallii (Asparagaceae, Scilloideae)
No full textFIGURE 1. Holotype of Muscari walli from Swedish Museum of Natural History (S-G-7328!)Published as part of Eker, İsma İl, 2021, Taxonomic resurrection of Muscari wallii (Asparagaceae, Scilloideae), pp. 226-242 in Phytotaxa 513 (3) on page 229, DOI: 10.11646/phytotaxa.513.3.3, http://zenodo.org/record/531318
Inhibition of Candida albicans Biofilm Formation and Attenuation of Its Virulence by Liriope muscari
No full text(1) Background: Although Candida albicans accounts for the majority of fungal infections, therapeutic options are limited and require alternative antifungal agents with new targets; (2) Methods: A biofilm formation assay with RPMI1640 medium was performed with Liriope muscari extract. A combination antifungal assay, dimorphic transition assay, and adhesion assay were performed under the biofilm formation condition to determine the anti-biofilm formation effect. qRT-PCR analysis was accomplished to confirm changes in gene expression; (3) Results: L. muscari extract significantly reduces biofilm formation by 51.65% at 1.56 μg/mL use and therefore increases susceptibility to miconazole. L. muscari extract also inhibited the dimorphic transition of Candida; nearly 50% of the transition was inhibited when 1.56 μg/mL of the extract was treated. The extract of L. muscari inhibited the expression of genes related to hyphal development and extracellular matrix of 34.4% and 36.0%, respectively, as well as genes within the Ras1-cAMP-PKA, Cph2-Tec1, and MAP kinase signaling pathways of 25.58%, 7.1% and 15.8%, respectively, at 1.56 μg/mL of L. muscari extract treatment; (4) Conclusions: L. muscari extract significantly reduced Candida biofilm formation, which lead to induced antifungal susceptibility to miconazole. It suggests that L. muscari extract is a promising anti-biofilm candidate of Candida albicans since the biofilm formation of Candida albicans is an excellent target for candidiasis regulation
Ferula communis, Antirrhinum latifolium, Muscari neglectum, Melica arrecta, Ophrys promontorii in Segn. Fl. Ital.: 417-421
No full textSi segnalano le seguenti entità: Ferula communis (specie nuova per Abruzzo e Molise), Antirrhinum latifolium (seconda segnalazione per l'Abruzzo), Muscari neglectum (specie nuova per l'Abruzzo), Melica arrecta (specie nuova per l'Abruzzo), Ophrys promontorii (specie nuova per l'Abruzzo
Isolamento e caratterizzazione di cellule progenitrici endoteliali da sangue e midollo osseo di maiale
No full textMuscari heldreichii Boissier 1859
No full textMuscari heldreichii Boissier (1859: 109) (Fig. 1) ≡ Botryanthus heldreichii (Boissier) Jordan & Fourreau (1870: 24). [Muscari hymenophorum Heldreich ex Boissier (1859: 109), nom. inval. pro syn.]. Lectotype (designated here): —[GREECE]. In m. Parnassi reg. infer. Inter lapides mobiles nuper nive obductos supra Rachova alt. 3000’, 22 April 1857, J. Guicciardi s.n., De Heldreich Herbarium Graecum Normale 662 (G00753524 photo! Fig. 1; isolectotypes: B 10 1158044!, MPU014552 photo!, MPU014553 photo!, JE00020018 photo!, S-G-7334 photo!, WU0079234 photo!). Protologue citation: —“Hab. in regione inferiori montis Parnassi inter lapides mobiles nive nuper obductos suprà Rachova alt. 3000’ fine Aprilis 1857. cl. Guicciardi.—Descr. e specim. vivis e bulbis Parnassicis vere 1858 enatis”. Additional specimens examined: — GREECE. Arcadia [Achaia], [Kalavryta], in regio superiori mt. Chelmos (Aroania vet.) supra pagum Sudena, alt 2000–2200 m, 20 July 1893, de Halácsy s.n (B 10 1201991!); [Kreta], [Rethymnon], M. Ida: im Felsgerölle der Gipfelregion, 29 May 1904, Dörfler 951 (B 10 9008653!); Prov. Peloponnisos, Nom. Achaia: Chelmos (Aroania), Nordhänge in der Nähe des Kataphygion des Alpin-Klubs Kalavrita. Felsschutt Schrofen, Kalk, 2100–2200 m, 18 June 1986, M. Erben s.n. (B 10 1016481!); m. Chelmos: in regione alpine, nives, 7000’, 29 July 1848, n.a. (G00753534 photo!). Notes: — This small alpine species is probably among the least known members of the genus Muscari. It shares some morphological similarities with Muscari botryoides in which it was synonymized by some authors, but is smaller with generally fewer flowers and those are of a brighter colour with faint white stripes. Additionally, the species is found only in alpine habitats above 2000 m of elevation in the mountains of central Greece, the Peloponnese mountains as well as on Crete. Muscari botryoides is usually absent in elevation above 2000 m and is further barely documented from Peloponnese and missing on Crete. The original description was made by E. Boissier (1859) in his Flora Orientalis based on a gathering made by J. Guicciardi near mount Parnassus in present Kentriki Ellada province. The respective gathering was distributed under exsiccate nr. 662 of the Herbarium Graecum Normale of T. Heldreich. Seven specimens of this gathering are located in different herbaria, namely Berlin (B), the Boissier herbarium held in Geneva (G-BOIS), Jena (JE), Montpellier (MPU), Stockholm (S) and Vienna (WU). Among those seven specimens, the one in Stockholm is by far the most complete one incl. multiple well-preserved plants, however, the specimen held in Geneva (G-BOIS) must be regarded as the lectotype since it is presumably the one that was used to make the description, hence it is here selected as lectotype and the others as isolectotypes. Some confusion may arise from the fact that the specimens referring either to the name M. heldreichii or to M. hymenophorum. Obviously, T. Heldreich regarded his gathering 662 as a new species and designated on his herbarium labels a new name, but Boissier did not follow and named the new taxon in honour of T. Heldreich.Published as part of Böhnert, Tim & Lobin, Wolfram, 2023, Lectotypification of Muscari heldreichii (Asparagaceae) from Greece, pp. 130-132 in Phytotaxa 584 (2) on page 130, DOI: 10.11646/phytotaxa.584.2.6, http://zenodo.org/record/763939
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