Amaryllidaceae Alkaloids
Galanthus
Potexvirus
Frequency-dependent variation in reproductive success in Narcissus: implications for the maintenance of stigma-height dimorphism. (1/24)
Negative frequency-dependent selection is a major selective force maintaining sexual polymorphisms. However, empirical demonstrations of frequency-dependent reproductive success are rare, particularly in plants. We investigate this problem by manipulating the frequencies of style morphs in a natural population of Narcissus assoanus, a self-incompatible herb with style-length dimorphism and intra-morph compatibility. We predicted that the reproductive success of morphs would vary negatively with their frequency because of the effects of morph-specific differences in sex-organ position on patterns of pollen transfer. This prediction was generally supported. The fruit and seed set of the two morphs did not differ significantly in plots with 1 : 1 morph ratios. However, short-styled plants produced significantly fewer seeds than long-styled plants in monomorphic plots, and significantly more seeds than long-styled plants in plots with 'long-biased' morph ratios. These patterns indicate that in the absence of physiological barriers to intra-morph mating, negative frequency-dependent selection contributes to the maintenance of stylar polymorphism through inter-morph pollen transfer. Our experimental results also provide insights into the mechanisms governing the biased style-morph ratios in populations of Narcissus species. (+info)Early detection of apoptosis by staining of acid-treated apoptotic cells with FITC-labeled lectin from Narcissus pseudonarcissus. (2/24)
BACKGROUND: Exposure of anionic phospholipids and modified carbohydrates are main parts of the apoptotic death program. Cells undergoing apoptosis can be identified by various methods, detecting surface changes or modifications of their organelles, respectively. We describe a method for the detection of early apoptosis by staining of cells with fluorescein isothiocyanate (FITC)-labeled lectin from Narcissus pseudonarcissus (NPn). METHODS: Apoptosis in cells or in cell lines was induced by various stimuli. To detect apoptosis the cells were stained with FITC-labeled lectin of NPn. After a short-term acid treatment they were analyzed by flow cytometry. RESULTS: The instability of the cytoplasmic membrane against acid and the binding of NPn were very early features of apoptotic cell death. The NPn lectin staining procedure detected apoptosis with high sensitivity. The staining was stable for at least 12 h. CONCLUSIONS: The method described in this study is suitable for the detection of the very early phases of apoptosis. The NPn lectin staining after short-term acid treatment can, therefore, be added to the list of reliable tools for the research of cell death. (+info)Mating patterns and genetic diversity in the wild daffodil Narcissus longispathus (Amaryllidaceae). (3/24)
Despite the importance of Narcissus to ornamental horticulture, there have been no population genetic studies of wild species, many of which have narrow distributions. Here, we measure selfing rates and levels of genetic diversity at allozyme loci in six populations of Narcissus longispathus, a self-compatible daffodil endemic to a few mountain ranges in southeastern Spain. The populations were distributed among four distinct river valleys encompassing two main watersheds in the Sierra de Cazorla mountains. Selfing rates averaged 0.37 (range 0.23-0.46), resulting in significant inbreeding coefficients for the progeny (f = 0.324). In contrast, estimates of inbreeding in parental genotypes were not significantly different from zero (f = 0.001), indicating that few selfed offspring survive to maturity because of inbreeding depression. Species-wide estimates of genetic diversity for the six populations were P(s) = 0.38, H(es) = 0.119 and A(s) = 1.27 with significant genetic differentiation among populations theta = 0.15. The observed patterns of genetic differentiation among populations are likely influenced by the mating system, and a combination of local topography, watershed affinities and gene flow. (+info)Daffodil toxicosis in an adult cat. (4/24)
A domestic longhair cat with a 3-day history of lethargy and vomiting after ingesting dried daffodil stems (Narcissus spp.) was severely hypothermic (33.0 degrees C), with bradycardia (78 beats/ min) and hypotension. Treatment with atropine, dexamethasone, fluid therapy, and supportive care resulted in a complete recovery by 6 days after exposure. (+info)Herkogamy and mating patterns in the self-compatible daffodil Narcissus longispathus. (5/24)
BACKGROUND AND AIMS: Floral design in self-compatible plants can influence mating patterns. This study investigated Narcissus longispathus, a self-compatible bee-pollinated species with wide variation in anther-stigma separation (herkogamy), to determine the relationship between variation in this floral trait and the relative amounts of cross- and self-fertilization. METHODS: Anther-stigma separation was measured in the field in six populations of N. longispathus from south-eastern Spain. Variation in herkogamy during the life of individual flowers was also quantified. Multilocus outcrossing rates were estimated from plants differing in herkogamy using allozyme markers. KEY RESULTS: Anther-stigma separation varied considerably among flowers within the six populations studied (range = 1-10 mm). This variation was nearly one order of magnitude larger than the slight, statistically non-significant developmental variation during the lifespan of individual flowers. Estimates of multilocus outcrossing rate for different herkogamy classes (t(m) range = 0.49-0.76) failed to reveal a monotonic increase with increasing herkogamy. CONCLUSIONS: It is suggested that the lack of a positive relationship between herkogamy and outcrossing rate, a result that has not been previously documented for other species, could be mostly related to details of the foraging behaviour of pollinators. (+info)Mating patterns and demography in the tristylous daffodil Narcissus triandrus. (6/24)
Mating patterns in plant populations are influenced by interactions between reproductive traits and ecological conditions, both factors that are likely to vary geographically. Narcissus triandrus, a wide-ranging heterostylous herb, exhibits populations with either two (dimorphic) or three (trimorphic) style morphs and displays substantial geographical variation in demographic attributes and floral morphology. Here, we investigate this variation to determine if demography, morphology, and mating system differ between the two sexual systems. Our surveys in Portugal and NW Spain indicated that dimorphic populations were less dense, of smaller size, and had larger plants and flowers compared to trimorphic populations. Outcrossing rates estimated using allozyme markers revealed similar outcrossing rates in dimorphic and trimorphic populations (t(m) dimorphic=0.759; t(m) trimorphic=0.710). All populations experienced significant inbreeding in progeny (mean F=0.143). In contrast, parental estimates of inbreeding were not significantly different from zero (mean F=0.062), implying that few inbred offspring survive to reproductive maturity due to inbreeding depression. Although the majority of inbreeding results from selfing, significant levels of biparental inbreeding were also detected in eight of the nine populations (mean s(s)-s(m)=0.081). Density was negatively associated with levels of selfing but positively associated with biparental inbreeding. Population size was positively associated with outcrossing but not biparental inbreeding. There were no consistent differences among the style morphs in outcrossing or biparental inbreeding indicating that the maintenance of trimorphism vs dimorphism is unlikely to be associated with inbreeding of maternal parents. (+info)Spatial ecology of mating success in a sexually polymorphic plant. (7/24)
The spatial context of reproduction is of crucial importance to plants because of their sessile habit. Since pollen and seed dispersal is often restricted, mating success is likely to depend on the quantity and quality of mates in local neighbourhoods. Here we use neighbourhood models to investigate the spatial ecology of pollination and mating in Narcissus assoanus, a sexually polymorphic plant with two mating morphs that differ in style length. By mapping individuals in eight populations from southwestern France, we investigated the influence of the density and morph identity of plants at different spatial scales on variation in female fertility. By using inferences on the expected patterns of pollen transfer based on floral morphology, we were able to predict the quantitative relations between local morph ratios and variation in fertility. Our analyses revealed differences in the spatial clustering of morphs and in their response to plant density and morph identity within local neighbourhoods. Mating success in N. assoanus was characterized by both density- and frequency-dependent processes, a condition that may be a general feature of the spatial ecology of plant mating. (+info)Radial density distribution and symmetry of a Potexvirus, narcissus mosaic virus. (8/24)
Narcissus mosaic virus is a Potexvirus, a member of the Flexiviridae family of filamentous plant viruses. Fiber diffraction patterns from oriented sols of narcissus mosaic virus have been used to determine the symmetry and structural parameters of the viral helix. The virions have a radius of 55+/-5 A. The viral helix has a pitch of 34.45+/-0.5 A, with 7.8 subunits per turn of the helix. We conclude that all members of the Potexvirus genus have close to 8 subunits per helical turn. (+info)In the context of medicine, particularly in psychiatry and psychology, "Narcissus" or "Narcissistic" is not typically used as a standalone medical definition. However, it is associated with Narcissism and Narcissistic Personality Disorder (NPD).
Narcissism is a personality trait characterized by a grandiose sense of self-importance, a lack of empathy for others, a need for excessive admiration, and feelings of entitlement. It's named after the Greek mythological figure Narcissus, who fell in love with his own reflection.
Narcissistic Personality Disorder (NPD) is a mental disorder characterized by these narcissistic traits, but to such an extent that they cause significant impairment in personal relationships and professional life.
Please note that only a qualified healthcare professional can diagnose such conditions.
Amaryllidaceae alkaloids are a type of naturally occurring chemical compounds that are found in plants belonging to the Amaryllidaceae family, which includes amaryllis, snowdrop, and daffodil species. These alkaloids have diverse pharmacological activities and have been studied for their potential medicinal properties. Some well-known Amaryllidaceae alkaloids include lycorine, galanthamine, and haemantamine.
Lycorine has been shown to have antiviral, antimalarial, and anti-cancer properties. Galanthamine is a reversible acetylcholinesterase inhibitor that has been used in the treatment of Alzheimer's disease. Haemantamine has been studied for its potential as an anti-arrhythmic agent.
It is important to note that while Amaryllidaceae alkaloids have shown promise in preclinical studies, further research is needed to determine their safety and efficacy in humans before they can be approved for medical use. Additionally, some of these alkaloids can be toxic in high concentrations, so it is important to exercise caution when handling or consuming plants that contain them.
"Galanthus" is not a medical term. It is the genus name for snowdrops, a type of small, white flowering plant that typically blooms in early spring. The name "Galanthus" comes from the Greek words "gala," meaning milk, and "anthos," meaning flower, referring to the plant's white, milk-like flowers.
Snowdrops have been used in traditional medicine in some cultures, but there is limited scientific evidence to support their effectiveness for any specific medical purpose. Some studies suggest that certain compounds found in snowdrops may have potential therapeutic benefits, such as anti-inflammatory and neuroprotective effects, but more research is needed before any definitive conclusions can be drawn.
Potexvirus is a genus of viruses in the family Alphaflexiviridae. These are positive-sense single-stranded RNA viruses that infect a wide range of plants, causing various diseases such as mosaic, necrosis, and stunting. The name "Potexvirus" is derived from the type species potato virus X (PVX). The virions are flexuous rods, non-enveloped, and about 12-13 nm in diameter and 470-580 nm in length. The genome is approximately 6.4 kb in size and encodes five open reading frames (ORFs). The first ORF encodes the replicase protein, while the other four ORFs encode the triple gene block proteins involved in viral movement, a coat protein, and a small cysteine-rich protein of unknown function. Potexviruses are transmitted by mechanical contact or contaminated tools and seeds.
Solid-phase microextraction (SPME) is an advanced technique used in analytical chemistry for the preparation and extraction of samples. It's not exclusively a medical term, but it does have applications in clinical and medical research. Here's a definition:
Solid-phase microextraction (SPME) is a solvent-free sample preparation technique that integrates sampling, extraction, concentration, and cleanup into a single step. It involves the use of a fused-silica fiber, which is coated with a thin layer of a stationary phase, such as polydimethylsiloxane (PDMS) or polyacrylate. This fiber is exposed to the sample matrix, allowing the analytes (compounds of interest) to be adsorbed or absorbed onto the coating. After the extraction step, the fiber is then inserted into a gas chromatograph or high-performance liquid chromatograph for analysis. SPME is widely used in various fields, including environmental monitoring, food analysis, and biomedical research, due to its simplicity, rapidity, and low cost. In the medical field, it can be applied for the analysis of drugs, metabolites, or other compounds in biological samples such as blood, urine, or tissue.
Narcissus
Narcissus romieuxii
Narcissus viridiflorus
Narcissus nevadensis
Narcissus pseudonarcissus
Narcissus Luttrell
Narcissus washstand
Narcissus poeticus
Narcissus elegans
Narcissus obesus
Narcissus alcaracensis
Operation Narcissus
Narcissus cuatrecasasii
Disfigured Narcissus
Narcissus hedraeanthus
Crambus narcissus
Saint Narcissus
Narcissus (Lemoyne)
Narcissus gaditanus
Narcissus lusitanicus
Narcissus triandrus
Narcissus (band)
Narcissus Hut
Narcissus Geyser
Narcissus moschatus
Agrias narcissus
Hypochrysops narcissus
Narcissus assoanus
Heteropsis narcissus
Narcissus (Caravaggio)
Narcissus - Wikipedia
Black Narcissus - Rotten Tomatoes
Narcissus - Conservapedia
Black Narcissus<...
Watch out for narcissus flies: they'll devastate your snowdrops
Paris Review - Narcissus
Black Narcissus Summary - eNotes.com
Narcissus jonquilla - Wikispecies
AN ITALIAN BRONZE FIGURE OF NARCISSUS, 19th century
Narcissus fields in Karavanke : Photos, Diagrams & Topos : SummitPost
Narcissus Flycatcher by Mark Curley - BirdGuides
Narcissus Rupicolus | ClipArt ETC
Narcissus of Jerusalem - OrthodoxWiki
White Welcome Narcissus Mixture | White Flower Farm
Tête à Tête Narcissus - Pinetree Garden Seeds
Daffodill (Narcissus Pseudonarcissus) - The Barn Owl Trust
Narcissus Falconet
Narcissus albimarginatus
Narcissus prime
December Birth Flowers: All About the Holly and Narcissus | 1800Flowers Petal Talk
Narcissus calcicola
Import Talent Loadouts and More with Narcissus Addon Update - Noticias de Wowhead
Narcissus ( Texas Daffodil ) : Backyard Gardener
201 South Narcissus Avenue, West Palm Beach FL - Walk Score
Narcissus ( Karamudli Daffodil ) - Backyard Gardener
Narcissus Free PSD - Photoshop psd
Narcissus
Daffodil4
- Narcissus oil - which is mostly culled from the poet's daffodil in France and Holland - is said to smell like a distinctive combination of both jasmine and hyacinth. (flowerinfo.org)
- An elegant departure from the traditional yellow daffodil, Narcissus 'White Diamonds Mixture' adds a dazzling white sophistication to spring borders and containers. (thompson-morgan.com)
- Daffodil and narcissus bulbs are easy to establish in any moist, well drained soil. (thompson-morgan.com)
- Narcissus Pseudonarcissus or Wild Daffodil or. (supercoloring.com)
Black Narcissus9
- Watch Black Narcissus with a subscription on Max, rent on Amazon Prime Video, Apple TV, or buy on Amazon Prime Video, Apple TV. (rottentomatoes.com)
- W hen Black Narcissus opened in England in 1947, Great Britain was barely emerging from the agony and exhaustion of World War II. (criterion.com)
- The "Black Narcissus" of the title turns out to be not some elevated poetic allusion but the name of the pungent aftershave with which the prince perfumes himself-a product he imports from England. (criterion.com)
- Despite its dazzling visual sweep, not one frame of Black Narcissus was filmed on location. (criterion.com)
- Powell builds Black Narcissus as a series of moods created through space and color. (criterion.com)
- For Powell, who had always placed great value on music in his work, Black Narcissus is perhaps his breakthrough to a musical conception of the medium (his next film would be The Red Shoes ). (criterion.com)
- Despite the great wit and character of Pressburger's dialogue, Black Narcissus is a film that develops almost entirely through formal rather than dramatic means. (criterion.com)
- British audiences in 1947 may well have seen Black Narcissus as a last farewell to their fading empire. (criterion.com)
- India achieved independence on August 14, 1947, and the final images of Black Narcissus , of a procession down from the mountaintop, seem to anticipate the British departure. (criterion.com)
Daffodils9
- Paperwhite narcissus ( Narcissus papyraceus ) is a delicate and fragrant variety of narcissus, a genus of plants that also includes daffodils. (1800flowers.com)
- More commonly known as daffodils, Narcissus needs little help to grow! (jacksonandperkins.com)
- Narcissi, Daffodils or Jonquils? (johnscheepers.com)
- Commonly, Narcissi are referred to as Daffodils or as Jonquils, reflecting the types of Narcissi historically grown on a regional basis over time. (johnscheepers.com)
- Daffodils, or Narcissi, belong to the horticultural genus Narcissus, which is broken down into 13 divisions by the Royal Horticultural Society, the International Registration Authority for all cultivars. (johnscheepers.com)
- Narcissus Class: Trumpet or Long Cupped Daffodils (Royal Horticultural Society Division 1). (vanengelen.com)
- Narcissus and Daffodils look particularly eye-catching when grown as drifts in borders or informal areas of grass. (thompson-morgan.com)
- For an attractive indoor display, plant daffodils and narcissus in containers of bulb fibre and position them cool garage or other well ventilated, dark position at a maximum temperature of 10°C (50°F). Water sparingly when necessary to keep the compost moist. (thompson-morgan.com)
- When growing daffodils and narcissus that are naturalised in grass, avoid mowing the area until their foliage has died back. (thompson-morgan.com)
Bulbs2
- Despite the fact that, when consumed, the bulbs of the narcissus can be dangerous, ancient Egyptians covered the nose, mouth and eyes of Pharaohs as part of a common death ritual. (flowerinfo.org)
- Already I see Crocus minimus, Crocus gargaricus, and C. sieberi in bloom, and lower down in the turf area I planted several hundred bulbs of Narcissus obvallaris, dug from an area of rough grass in my former garden. (pacificbulbsociety.org)
Tete a Te1
- Tete a Tete is a charming miniature narcissus that reaches only 6-8", ideal for the front border of a flower bed or for naturalizing-tucked under shrubs and trees or in between rocks and in containers or windowboxes. (superseeds.com)
Juncifolius1
- Narcissus rupicolus is a form of narcissus juncifolius . (usf.edu)
Jonquilla4
- Narcissus jonquilla L. , Sp. (wikimedia.org)
- 2018. Narcissus jonquilla in Kew Science Plants of the World Online . (wikimedia.org)
- Narcissus jonquilla in The Plant List Version 1.1. (wikimedia.org)
- Narcissus jonquilla in the Germplasm Resources Information Network (GRIN) , U.S. Department of Agriculture Agricultural Research Service. (wikimedia.org)
Myth5
- Narcissus was a man in Greek myth who fell in love with his own reflection. (conservapedia.com)
- In the Roman poet Ovid 's retelling of the myth, Narcissus is the son of the river god Cephissus and the nymph Liriope. (conservapedia.com)
- Other themes of the exhibition include the classical origins of the myth of Narcissus and the place of narcissism in psychoanalytic thinking. (freud.org.uk)
- Seamus Heaney in his version of the Narcissus to the conventions of his age, he painted directly from myth. (cdc.gov)
- If social media is any indication, we, like Narcissus of ancient myth, are surely self-obsessed creatures. (cdc.gov)
Echo2
- It is quite possible, however, that the connection between Echo and Narcissus was entirely Ovid's own invention, for there is no earlier references to this story in literature . (conservapedia.com)
- Ovid told of handsome Narcissus and Echo, content enriched with psychological tension. (cdc.gov)
Reflection4
- The goddess Nemesis heard the prayers for vengeance of a boy whom Narcissus had rejected and arranged for him to fall in love with his own reflection. (conservapedia.com)
- Narcissus stayed watching his reflection and let himself die. (conservapedia.com)
- In mythology it is said that Narcissus became so entranced by his reflection in a lake that he fell in and drowned. (flowerinfo.org)
- Unable to leave the beauty of his reflection, Narcissus drowned. (cdc.gov)
Search2
- This study seeks to evaluate Narcissus conduct and find out whether he should be detained, whether he has rights and whether Sheriff had the right to search his computer. (essaywriter.org)
- Arguments presented by Each Side: Narcissus may argue that Sheriff had no rights to search is the computer to obtain the information that he obtained because it was against the Fourth Amendments of the constitution of the United States. (essaywriter.org)
Title1
- These drawings, now in the Fundacio Gala-Salvador Dalí in Spain, are on display, and Dali's long poem with the same title as the painting, The Metamorphosis of Narcissus . (freud.org.uk)
Greek2
- Narcissus was of Greek origin. (orthodoxwiki.org)
- The Greek word narke (which translates to stupor or numbness) is also thought to be at the root of the narcissus flower's name. (flowerinfo.org)
Species1
- There are dozens of varieties of narcissi which include the unadulterated - mainly wild-growing - species, all the way to hybrids. (flowerinfo.org)
Psychological1
- Narcissistic personality disorder , named after Narcissus, is a psychological term used to refer to any form of unhealthy self-obsession, whether based on physical appearance or not. (conservapedia.com)
Flowers3
- The December birth flowers are the holly and narcissus, particularly the paperwhite variety. (1800flowers.com)
- When the other gods mourned him, they left behind handfuls of narcissus flowers. (flowerinfo.org)
- The narcissus flower is considered one of the many flowers of love. (flowerinfo.org)
Yellow1
- The cultivar 'Texas', one of the double narcissi, blooms in a waxy white, with the center petals intermingling with pale yellow. (backyardgardener.com)
Royal Horticultural So1
- Narcissus Class: Double (Royal Horticultural Society Division 4). (vanengelen.com)
Click2
- For information on the growing and care of Narcissus, click Growing Guide. (whiteflowerfarm.com)
- Click the Narcissus coloring pages to view printable version or color it online (compatible with iPad and Android tablets). (supercoloring.com)
Watch1
- Should Narcissus use such equipment to buy hunting equipment, sex toys or watch pornography ? (essaywriter.org)
Free1
- Look up Narcissus or narcissus in Wiktionary, the free dictionary. (wikipedia.org)
Images1
- Are there restrictions regarding Narcissus sexual conquest or his seductive images in social media? (essaywriter.org)
Year1
- No need to replant year after year - Narcissus divide on their own and multiplies - ensuring a beautiful garden for years to come! (jacksonandperkins.com)
Corona1
- There are two types of Split Corona Narcissi. (johnscheepers.com)
Flower3
- The narcissus flower - which is a member of the amaryllis family - has become very popular around the world, but has developed a special following in Germany, where in 1981 it became the subject for a campaign to protect wildflowers. (flowerinfo.org)
- Given the heady fragrance of the narcissus flower, it has become one of the most frequently used floral scents. (flowerinfo.org)
- As I write, a couple of the hoop petticoat narcissi are in flower in the sand. (pacificbulbsociety.org)
Current1
- In Hamlet and Narcissus, John Russell confronts the paradigm shift that has occurred in psychoanalysis and takes steps to formulate a critical instrument based on current psychoanalytic thinking. (google.cat)
Personal2
- Officer Narcissus openly expresses his political opinion and other personal feelings regarding Mayor of Saint Leo. (essaywriter.org)
- Narcissus used office computers to carry out personal activities. (essaywriter.org)
List1
- I grew a lot of my Narcissus from seed purchased from Monocot, so I'll go back and match my database with the references in this list and see what I come up with. (pacificbulbsociety.org)
Comments1
- Are the Narcissus' political comments and opinions regarding the Mayor necessary or he should avoid them at all cost? (essaywriter.org)
Issue1
- Accordingly, Narcissus may raise the issue because the Fourth Amendment requires that for any searches and seizures to be done there has to be the warrant that is judicially sanctioned and supported by affirmation or oath. (essaywriter.org)