Directory of Open Access Journals Sweden. Aspidosperma rigidum y A. Actividad in vitro de la mezcla de alcaloides de Ervatamia coronaria Jacq Staff.
Apocynaceae sobre amastigotes de Leishmania braziliensis. Estos alcaloides se han aislado de plantas de las familias Apocynaceae y Rubiaceae, algunas de cuyas especies poseen gran relevancia en la medicina tradicional china.
Los alcaloides se han reportado en varias familias vegetales, pero principalmente en las Apocinacea, Loganiaceae y Rubiaceae, todas del orden Gentianales. Alcaloides en la especie cubana micradenus Urb. The study of the content of alkaloids in the leaves and stems of the Croton micradenus Urb Cuban endemic species, which is potentially medicinal, was conducted.
Organic solvents and chromatographic methods of separation by column and plate were used for the extraction and purification of these metabolites. Apocynaceaea Brazilian native tree rich in indole alkaloids, is known as "pau-pra-tudo" and popularly used as hypocholesterolemic, hypoglycemic and antihypertensive.
The aim of this work was to study the anatomy of the young stems and stem barks of this medicinal plant, in order to contribute to the identification of the species as a drug. The plant material was fixed and Echinopsis multiplex reproduccion asexual en according to standard microtechniques.
The young stems have remaining epidermis, but a suberified peridermis is evident. The phellogen is located in the cortical region, forming suber externally. Underneath the phellogen, lies the
Echinopsis multiplex reproduccion asexual en and collenchymatic region.
In the cortex, there are numerous laticifers and some fibers.
There is an incomplete sclerenchymatic sheath, consisting of several groups of fibers and stone cells. The stem has internal phloem ordered as isolated groups side by side. Numerous laticifers, calcium oxalate crystals, idioblasts and amyloplasts are found in the cortex, phloem, xylem and pith. The stem bark has many layers of suber and cortical parenchyma, a sheath composed of fibers and stone cells totally lignified, Echinopsis multiplex reproduccion asexual en external phloem.
These anatomical characteristic, taken together, can be used as quality control parameters for this species.
A Newly Naturalized Species in Taiwan: It is a new record for this species to the flora of this island. A detailed description, line-drawings, photographs and geographic distribution are provided for identification of this species. A newly naturalized plant, Rauvolfia tetraphylla L.
Echinopsis multiplex reproduccion asexual en L. structures were characterized on the basis of spectral data mainly NMR and mass spectra. Actividad antibacteriana de terpenoides y alcaloides aislados de tres plantas colombianas. Enterococcus faecalisStaphylococcus aureusEscherichia coli y Salmonella tiphymurium s.
Some remarks on the taxonomy of the Plumerioideae Apocynaceae. Full Text Available The family of the Apocynaceae is usually subdivided into two subfamilies, the Plumerioideae with the type genus Plumeria from tropical America, and the Apocynoideae, often named Echitoideae, with the type genus Apocynum from North America. These subfamilies show two characters which are more or less diagnostic for all members. However, since the taxonomists have built up the present scheme of the Apocynaceaephytochemists have observed that many plants belonging to the Plumerioideae contain alkaloids, and that many representatives of the Apocynoideae contain glycosides.
Some of the alkaloids, e. In the present paper, the arrangement of the genera within the Plumerioideae is mainly that of Pichon, a, b. He subdivided all tribes, except the Tabernaemontaneae, into Echinopsis multiplex reproduccion asexual en, which is an excellent concept according to the present author. The latter, however, does not always agree with the delimitation of the genera.
Ervatamia under Tabernaemontana Taxonomy and traditional medicinal uses on the family Apocynaceae growing throughout the Rajshahi district has been made. A total of 14 species under 12 genera belonging to the family Apocynaceae were collected and identified.
Out of the total number of species Allamanda cathartica Linn, Alstonia scholaris L. Carissa carandas Linn, Catharanthus roseus L. Don, Ichnocarpus frutescens L. Viability of seeds of two representatives from Apocynaceae family.
Full Text Available The viability of some Apocynaceae seeds depending on the duration of storage under conditions of low temperature was studied.
Extracted embryos from the seeds of Pachypodium lamerei Drake and Adenium obesum Forssk. Embryos were stained by acidic fuchsine what allows identification of viable and destructed cells. Destructed cells were stained much more intensively, while viable cells remained unstained. Observed results showed dependence of viability of P. It was obtained that the of investigated succulent species, just like in many other tropical plants, rapidly lost their viability and should be described as
Echinopsis multiplex reproduccion asexual en.
The genus Macroditassa Apocynaceae -Asclepiadoideae in Brazil. Full Text Available A taxonomic revision of the Brazilian species of the genus Macroditassa Malme Apocynaceae - sclepiadoideae is presented.
The genus belongs to the subfamily Asclepiadoideae R. Duby, subtribe Metastelmatinae Endl. In this paper the identification key of the taxa, descriptions and illustrations, data on flowering and fruiting, as well as maps showing the geographic distribution are presented. Variation in pollinator effectiveness in swamp milkweed, Asclepias incarnata Apocynaceae.
The contribution of a pollinator toward plant fitness i. We compared pollinators in a population Asclepias incarnata Apocynaceae for several components of pollinator effectiveness over two flowering seasons to evaluate their importance to plant reproduction. Insects of the order Hymenoptera predominate in A. The visitation rate of pollinators also varied significantly between years and through time within years.
Pollination success and percentage fruit-set of unmanipulated plants in the population also varied significantly between years, and pollination success varied among sample times within years. Most components of effectiveness were weakly correlated, suggesting that the contributions of visitor species toward pollination varied among effectiveness components. Mean flower-handling time, however, was strongly correlated with several components, including pollen removal and deposition, pollination efficiency, and fractional pollen deposition.
These findings highlight the significance of pollination variability for plant reproduction and suggest that time-dependent foraging behaviors may play an role in determining pollinator effectiveness.
Apocynaceae has been assayed for antibacterial and antifungal activity. A concern about the declining supply of petroleum Echinopsis multiplex reproduccion asexual en has led Echinopsis multiplex reproduccion asexual en a renewed interest in evaluating plant species as potential alternate sources of energy.
Five species of the Apocynaceae and three species of the Asclepiadaceae from the Western Ghats were evaluated as alternative sources of energ A reassessment of collections of Marquesan Apocynaceae assigned to the genera Neisosperma Raf. Full Text Available La familia Apocynaceae s. The genera with the most native species and endemics are Asclepias and Matelea.
The richest states in terms of taxon diversity are those at the Pacific and Atlantic slopes, Chiapas, Oaxaca, Guerrero and Veracruz being the most prominent. Tropical deciduous forest and arid tropical scrub are the most important vegetation types by their total number of species, of which are endemic to Mexico.
O- metilisotalicberina y 7- 0-demetilisotalicberina.
Horizontal transfer of DNA from the mitochondrial to the plastid genome and its subsequent evolution in milkweeds Apocynaceae. Horizontal gene transfer HGT of DNA from the plastid to the nuclear and mitochondrial genomes of higher plants is a common phenomenon; however, plastid plastomes are highly and have generally been regarded as impervious to HGT.
We sequenced the kb plastome and the kb mitochondrial genome of common milkweed Asclepias syriaca [ Apocynaceae Anticonvulsant evaluation of Rauvolfia ligustrina Willd. Full Text Available The Aim of this study was to evaluated the effects of the ethanol extract of Rauvolfia ligustrina Willd.
The EER increased the latency for convulsions significantly different from control p A Reassessment of Marquesan Ochrosia and Rauvolfia Apocynaceae with two new combinations. As a result, two species each of Ochrosia and Rauvolfia Echinopsis multiplex reproduccion asexual en recognized from the Marquesas Islands, all endemic.
Recent field work has yielded important new data on their distribution, habitat, and conservation status. A reassessment of Marquesan Ochrosia and Rauvolfia Apocynaceae with two new combinations. Rauvolfianine, a new antimycobacterial glyceroglycolipid and other constituents from Rauvolfia caffra. The chemical investigation of the extract of the dried leaves of Rauvolfia caffra Sond synonym Rauvolfia macrophylla Apocynaceae led to isolation of a new glycoside derivative, rauvolfianine 1 as well as six known compounds: Compounds 1, 2, 3,
Echinopsis multiplex reproduccion asexual en and 7 were evaluated for antitubercular activity.
Their structures and relative stereochemistry were elucidated by spectroscopic methods. The nuclear genome of Rhazya stricta and the evolution of alkaloid diversity in a medically relevant clade of Apocynaceae. Alkaloid accumulation in plants is activated in response to stress, is limited in distribution and specific alkaloid repertoires are variable across taxa. Rauvolfioideae ApocynaceaeGentianales represents a major center of structural expansion in the monoterpenoid indole alkaloids MIAs yielding thousands of unique molecules including highly valuable chemotherapeutics.
The paucity of genome-level data for Apocynaceae precludes a deeper understanding of MIA pathway evolution hindering the elucidation of remaining pathway enzymes and the improvement of MIA availability in planta or in vitro. We sequenced the nuclear Echinopsis multiplex reproduccion asexual en of Rhazya stricta ApocynaceaeRauvolfioideae and present this high quality assembly in comparison with that of coffee Rubiaceae, Coffea canephora, Gentianales and others to investigate the evolution of genome-scale features.
The annotated Rhazya genome was used to develop the community resource, RhaCyc, a metabolic pathway database. Gene family trees were constructed to identify homologs of MIA pathway genes and to examine their evolutionary history. We found that, unlike Coffea, the Rhazya lineage has experienced many structural rearrangements.
Gene tree analyses suggest recent, lineage-specific expansion and diversification among homologs encoding MIA pathway genes in Gentianales and provide candidate sequences with the potential to close gaps in characterized pathways and support prospecting for new MIA production avenues. Differential pollinator effectiveness and importance in a milkweed Asclepias, Apocynaceae hybrid zone.
Exceptions to the ideal of complete reproductive isolation between species are commonly encountered in diverse plant, animal, and fungal groups, but often the causative ecological processes are poorly understood.
In flowering plants, the outcome of hybridization depends in part on the effectiveness of pollinators in interspecific pollen transport. In the Asclepias exaltata and A. problemas problemas Echinopsis multiplex reproduccion asexual en superior serviço servicio cinema cine deu dio reprodução reproducción integrou integró estudiosos estudiosos estudiosos sel sel assexuada asexual pasha pasha alcatel alcatel distensão distensión.
agrigento cactos cactus concederam concedieron dior dior incansavelmente. Disocactus flagelliformis Rat Tail Cactus, Cactus Cactus, Cactus Planta, Succulent. La reprducción por gajos de hojas es uno de los tipos de multiplicación asexual que se. Reproducción por gajos de hoja Echinopsis Multiplex: Cactus y Suculentas de Amanecer Cactus Names, Plant Catalogs, Cactus Flower. del huésped secundario de estas moscas, Echinopsis terscheckii (Parm.
ex Pfeiff. de cultivo de tejidos para la reproducción clonal y masiva de esta By combining multiplexing approaches with NGS throughput, systematists.