Papaver Somniferum
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Honey sample collection methods influence pollen composition in determining true nectar-foraging bee plants
ABSTRACT This study investigated the suitability of honey sample collection methods for determining the botanical origin of honey through palynological analysis. We used three methods to collect honey samples in three different modes viz. extracted honey using a honey extractor, squeezed honey and pipetted honey (collected by micropipette/dropper from honey
Acta Bot. Bras.. Publicado em: 2020-09
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2. Variação desináptica induzida em papoula (Papaver somniferum L.)
Investigações citológicas de EMS (Etil metano sulfonato) em população tratada demonstrou frequencia aumentada de univalentes por célula com separação desigual na Anáfase I. Em contraste às plantas controladas, plantas desinápticas em meio forte foram obtidas em EMS 0,6%, revelando alta frequência de univalentes na Metáfase I, junto com bivalente
Crop Breed. Appl. Biotechnol.. Publicado em: 2013-12
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3. Uma breve história do ópio e dos opióides
JUSTIFICATIVA E OBJETIVOS: Desde tempos imemoriais, o ópio e os seus derivados, além de exercerem ponderável influência sobre o comportamento dos seres humanos, têm sido empregados como sedativo e como analgésico. A partir do século XIX, com o isolamento dos alcalóides do ópio e as facilidades para o emprego dessas substâncias por via parenteral, h
Revista Brasileira de Anestesiologia. Publicado em: 2005-02
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4. Purification and Characterization of Calmodulins from Papaver somniferum and Euphorbia lathyris
Calmodulins (CaM) were isolated and characterized from two well-known latex producing plants, Papaver somniferum and Euphorbia lathyris. The molecular weights of both were determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis to be 17,000 comparable to that of bovine brain CaM. Amino acid compositions also compared similarly with those of k
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5. Somatic embryogenesis, rhizogenesis, and morphinan alkaloids production in two species of opium poppy
A study of somatic embryogenesis and rhizogenesis and their influence on production of morphinan alkaloids on two species of opium poppy is presented. We identified the ratios of auxin and cytokinin that caused somatic embryogenesis and rhizogenesis in hypocotyl and cotyledons of Papaver somniferum album and Papaver orientale splendidissimum. The hypocotyls
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6. Papaver somniferum (opium poppy).
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7. Maintenance of High Photosynthetic Rates in Mesophyll Cells Isolated from Papaver somniferum1
The establishment and maintenance of high rates of photosynthetic CO2 incorporation in mesophyll cells of Papaver somniferum (opium poppy) depend on a regime of dark and light periods immediately following isolation, as well as carefully adjusted conditions of isolation. Analysis of the incorporation pattern of 14CO2 by the isolated cells indicates an initia
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8. Presence and formation of codeine and morphine in the rat.
Endogenous codeine and morphine were identified in rat brain by immunological determination following HPLC. To demonstrate occurrence of a biosynthetic pathway to morphine in mammals similar to that used by the poppy plant, (+)-salutaridine, (-)-thebaine, and (-)-codeine were administered to rats intravenously. These compounds, which are intermediates in the
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9. The roles of latex and the vascular bundle in morphine biosynthesis in the opium poppy, Papaver somniferum
The opium poppy, Papaver somniferum, is one of mankind's oldest medicinal plants. Opium poppy today is the commercial source of the narcotic analgesics morphine and codeine. Along with these two morphinans, opium poppy produces approximately eighty alkaloids belonging to various tetrahydrobenzylisoquinoline-derived classes. It has been known for over a centu
National Academy of Sciences.
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10. Transformation of thebaine to oripavine, codeine, and morphine by rat liver, kidney, and brain microsomes.
Thebaine, an intermediate of morphine biosynthesis in the poppy plant, Papaver somniferum, was transformed to oripavine, codeine, and morphine by rat liver, kidney, and brain microsomes in the presence of an NADPH-generating system. The formation of morphine, codeine, and oripavine was identified by a specific RIA, HPLC, and GCMS. Thebaine also gave rise to
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11. Cell Type–Specific Localization of Transcripts Encoding Nine Consecutive Enzymes Involved in Protoberberine Alkaloid Biosynthesis
Molecular clones encoding nine consecutive biosynthetic enzymes that catalyze the conversion of l-dopa to the protoberberine alkaloid (S)-canadine were isolated from meadow rue (Thalictrum flavum ssp glaucum). The predicted proteins showed extensive sequence identity with corresponding enzymes involved in the biosynthesis of related benzylisoquinoline alkalo
American Society of Plant Biologists.
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12. Uptake and Release of Abscisic Acid by Isolated Photoautotrophic Mesophyll Cells, Depending on pH Gradients
Uptake and release of abscisic acid (AbA) by isolated mesophyll cells of Papaver somniferum is characterized by the following observations: (a) Uptake rate is a linear function of the external AbA concentration in the range from 10−6 to 5 × 10−5 molar, and decreases with increasing pH. At any pH, uptake rate is linearly related to the concentration of u