| r-banding produced by dnase i digestion of chromomycin-stained chromosomes. | a distinct reverse (r-) banding pattern was produced on human chromosomes by digesting chromosome spreads with pancreatic deoxyribonuclease i (dnase i) in the presence of an excess of chromomycin a3 (cma), followed by staining with giemsa. the banding pattern corresponds with that obtained by chromomycin a3 fluorescence, and bands which fluorescence brightly with chromomycin appear darkly with giemsa. the same relationship was observed in two plants, scilla siberica and ornithogalum caudatum, wh ... | 1977 | 72638 |
| visualization of the interphase chromosomes of ornithogalum virens and muntiacus muntjak. | a technique for visualizing "interphase chromosomes" was applied to nuclei of the angio-spermous plant, ornithogalum virens (2 n = 6), and the male mammal, muntiacus munjak (2 n = 7), in an attempt to correlate the numbers of "chromosomes" visible during interphase with the respective diploid chromosome numbers. the alterations in chromosome structure observed during g1, s, and g2 periods were comparable to those previously reported in allium cepa and chinese hamster (cho line) cells [33], but f ... | 1979 | 428620 |
| giemsa banding and heterochromatin distribution in ornithogalum. | in ornithogalum virens, following giemsa staining, the mitotic chromosomes revealed distinct c-banding pattern. interphase nucleus also showed 12 chromocentres corresponding to the number of c-bands. based on the measurements of c-bands, about 13.5% of the genome is heterochromatic. | 1975 | 1204770 |
| the molecular cloning and nucleotide sequencing of the 3'-terminal region of ornithogalum mosaic virus. | dna complementary to the 3'-terminal 3684 nucleotides of the ornithogalum mosaic potyvirus (omv) genome was cloned and sequenced. the sequence consisted of a single large open reading frame which probably starts upstream of the cloned region. by comparison to other sequenced potyviruses, it was estimated that the clone contained the 3' non-coding (3'-nc) region, the coat protein (cp) gene and the large nuclear inclusion protein (nib) gene, as well as approximately 85% of the small nuclear inclus ... | 1990 | 2254751 |
| polysaccharides connected with microtubules in the lipotubuloids of ornithogalum umbellatum l. | | 1973 | 4128979 |
| rhodexin a and rhodexoside in ornithogalum umbellatum. | | 1967 | 4382305 |
| [ornithogalum magnum krasch. et schischk.--new source of cardiac glycosides]. | | 1969 | 5363319 |
| meiosis in ornithogalum virens (lilliaceae). ii. univalent production by preprophase cold treatment. | | 1971 | 5541957 |
| contact dermatitis from the juice of ornithogalum caudatum. | | 1965 | 5867070 |
| a novel 16,23-epoxy-5 beta-cholestane glycoside with potent inhibitory activity on proliferation of human peripheral blood lymphocytes from ornithogalum saundersiae bulbs. | a novel 16,23-epoxy-5 beta-cholestane triglycoside (1) was isolated from the bulbs of ornithogalum saundersiae (liliaceae). the structure was determined by extensive spectroscopic analysis. the conformation of the e-ring part of 1 was studied through molecular mechanics and molecular dynamics calculation methods. compound 1 potently inhibited proliferation of peripheral blood lymphocytes provided from a chronic renal failure patient without causing any cytotoxicity in the lymphocytes and hl-60 h ... | 1995 | 7586067 |
| banana bract mosaic virus: characterisation using potyvirus specific degenerate pcr primers. | banana bract mosaic (bbmv) is a relatively new, non-persistently aphid transmitted disease of bananas in the philippines. partially purified preparations from infected plants contained low numbers of flexuous virions, 660 to 760 nm in length, and a 38kda protein, possibly the coat protein, which reacted with a general potyvirus antiserum in western blots. there were insufficient virions for conventional antiserum production or cdna synthesis. therefore, dna was amplified using potyvirus-specific ... | 1995 | 7733824 |
| a new cytotoxic cholestane bisdesmoside from ornithogalum saundersiae bulbs. | bioassay-guided fractionation of the meoh extract of ornithogalum saundersiae bulbs led to the isolation of a new cholestane bisdesmoside with potent cytotoxic activities toward leukemia hl-60 and molt-4 cells. the structure was deduced mainly from spectroscopic information. | 1996 | 8695908 |
| suspected cardiac glycoside intoxication in sheep and goats in namibia due to ornithogalum nanodes (leighton). | the main clinical and necropsy features of field and experimental cases of suspected cardiac glycoside intoxication following ingestion and dosing of the plant ornithogalum nanodes, are described. the distribution of intoxication in the area as well as a description of the plant are given. plant samples tested for cardiac glycosides by fluorescence polarization immuno-assay (fpia) gave a strong positive reaction. this is a new finding, as other toxic ornithogalum species in southern africa are d ... | 1998 | 9629587 |
| saundersiosides c-h, rearranged cholestane glycosides from the bulbs of ornithogalum saundersiae and their cytostatic activity on hl-60 cells. | six novel rearranged cholestane glycosides with a six-membered hemiacetal ring system, designated as saundersiosides c-h, were isolated from the bulbs of ornithogalum saundersiae. their structures were determined on the basis of spectroscopic analysis and the result of hydrolysis. the conformation of the six-membered hemiacetal ring of the rearranged cholestanes was shown to be almost a boat-form by molecular mechanics and molecular dynamics calculation studies. among the isolated compounds, sau ... | 1999 | 10501026 |
| cholestane rhamnosides from the bulbs of ornithogalum saundersiae. | phytochemical examination of the bulbs of ornithogalum saundersiae yielded six cholestane rhamnosides, two of which had previously been isolated from the same plant material. however, detailed spectroscopic analysis of the aglycone led us to revise the configuration of the c-11 hydroxyl group of the latter two and reassign their structures as (22s)-cholest-5-ene-3 beta,11 alpha,16 beta,22-tetrol 16-o-alpha-l-rhamnopyranoside and (22s)-cholesta-5,24-diene-3 beta,11 alpha,16 beta,22-tetrol 16-o-al ... | 1999 | 10501027 |
| three new homoisoflavanone glycosides from the bulbs of ornithogalum caudatum. | phytochemical examination of ornithogalum caudatum led to the isolation of three new homoisoflavanone glycosides. their structures were elucidated, on the basis of the spectroscopic data and chemical evidence and by comparing them with those of known compounds, as (-)-7-o-methyleucomol 5-o-beta-d-glucopyranoside (1), (-)-7-o-methyleucomol 5-o-beta-rutinoside (2), and (-)-7-o-methyleucomol 5-o-beta-neohesperidoside (3), respectively. | 2002 | 11858761 |
| nucleotide sequences of the coat protein gene of potyviruses infecting ornithogalum thyrsoides. | species of three viral genera infecting ornithogalum thyrsoides plants showing mosaic symptoms were identified using rt-pcr and degenerate universal primers for each viral genus. the dna fragments obtained encoded the coat protein (cp) gene and were sequenced. the plants were found to be infected with one or other of three potyvirus species, one of them was ornithogalum mosaic virus (ormv). the other two viruses were previously unrecorded and were named ornithogalum virus 2 (ov-2) and 3 (ov-3). ... | 2003 | 12664289 |
| the action of ornithogalum umbellatum on the heart. | | 1954 | 13175096 |
| clinical trial of ornithogalum umbellatum on the human heart; preliminary report. | | 1955 | 13240604 |
| ornithogalum umbellatum in the treatment of congestive heart failure: progress report. | | 1961 | 13926446 |
| [existence of a phyto-hemagglutin in various species of the genus ornithogalum (liliaceae)]. | | 1960 | 14432910 |
| [phytohemagglutinins in liliaceae plants. v. physicochemical properties of agglutinins in ornithogalum pyrenaicum l. seeds]. | | 1962 | 14486545 |
| [phytohemagglutinins in liliaceae plants. vi. research on species other than ornithogalum pyrenaicum]. | | 1962 | 14486546 |
| steroidal glycosides from the bulbs of ornithogalum thyrsoides. | phytochemical analyses have been carried out on the fresh bulbs of ornithogalum thyrsoides with particular attention to the steroidal glycoside constituents, resulting in the isolation of four new spirostanol saponins and seven new cholestane glycosides, together with three known steroidal compounds. the structures of the new glycosides were determined on the basis of their spectroscopic data, including 2d nmr spectroscopy, and the results of hydrolytic cleavage. the isolated compounds were eval ... | 2004 | 15497941 |
| [phytohemagglutinins in the liliaceae. iii. specificity of the agglutinin in the seeds of ornithogalum pyrenaicum l]. | | 1961 | 13735635 |
| [phytohemagglutinins in liliaceae. iv. new research on the agglutinin of ornithogalum pyrenacium l]. | | 1961 | 13735634 |
| a new hemiterpene glucoside from ornithogalum montanum. | | 1992 | 17226506 |
| [phytohemagglutinins in liliaceae. ii. agglutinins in the seeds of ornithogalum pyrenaicum l. (first results)]. | | 1960 | 13735633 |
| [cardenolide aus ornithogalum boucheanum und ornithogalum balansae.] | | 1982 | 17396867 |
| spatial variation in springtime food resources influences the winter body mass of roe deer fawns. | it is well established that the dynamics of mammalian populations vary in time, in relation to density and weather, and often in interaction with phenotypic differences (sex, age and social status). habitat quality has recently been identified as another significant source of individual variability in vital rates of deer, including roe deer where spatial variations in fawn body mass were found to be only about a tenth of temporal variations. the approach used was to classify the habitat into blo ... | 2003 | 12920639 |
| the s-chromosomes in ornithogalum l. | | 1925 | 17816923 |
| cholestane glycosides from the bulbs of ornithogalum thyrsoides and their cytotoxic activity against hl-60 leukemia cells. | twelve bisdesmosidic cholestane glycosides (1-12), including nine new ones (1-9), were isolated from the bulbs of ornithogalum thyrsoides by monitoring the cytotoxic activity on hl-60 leukemia cells. the structural assignment of the new compounds was carried out by spectroscopic analysis and the results of hydrolytic cleavage. the 3-o-monoglucosides with an aromatic acyl group at the c-16 diglycoside moiety (1, 12) were extremely cytotoxic, with respective ic(50) values of 0.00016 and 0.00013 mi ... | 2002 | 12398536 |
| [specific features of the protein fraction composition of seeds in plants of the subfamily scilloideae]. | the composition of protein complexes in seeds was studied in plants of the subfamily scilloideae. seed protein contents were compared in 59 species of 12 genera: scilla l., hyacinthus l., bellevalia lapeyr., chionodoxa boiss, puschkinia adam., muscari mill., ornithogalum l., eucomis l'herit, galtonia desne, velthemia gleditsch., hyacinthoides linn., and hyacinthella schur. the results confirmed the heterogeneity of the subfamily: its constituent genera proved to differ in the composition of prot ... | 2008 | 18956731 |
| combining flow cytometry and gfp reporter gene for quantitative evaluation of pectpbacterium carotovorum ssp. carotovorum in ornithogalum dubium plantlets. | ornithogalum dubium is a natural host of the soft rot pathogen pectobacterium carotovorum ssp. carotovorum (pcc). the present study was aimed to develop a quantification system for pcc expressing a gfp reporter gene, using fluorescent activated cell sorter (facs) in planta. | 2010 | 19732215 |
| [complementary nuclear dna in embryo sac cells of haemanthus albiflos and ornithogalum caudatum]. | cytophotometric measurements of feulgen-dna were carried out in the nuclei of embryo sac cells of haemanthus albiflos and ornithogalum caudatum. it was found that the nuclei of the egg system, haploid in the number of chromosomes, became polyploid in dna amount at the final stages of gametophyte development. | 2002 | 11963552 |
| first total synthesis of an exceptionally potent antitumor saponin, osw-1. | osw-1 (1), an acylated disaccharide cholestane saponin from ornithogalum saudersiae with exceptionally potent antitumor activity, was first synthesized from commercially available dehydroisoandrosterone, l-arabinose, and d-xylose in total 27 steps with the longest linear sequence of 14 steps and in 6% yield. | 1999 | 11674104 |
| is the flower fluorescence relevant in biocommunication? | flower fluorescence has been previously proposed as a potential visual signal to attract pollinators. in this work, this point was addressed by quantitatively measuring the fluorescence quantum yield (φ(f)) for flowers of bellis perennis (white, yellow, pink, and purple), ornithogalum thyrsoides (petals and ovaries), limonium sinuatum (white and yellow), lampranthus productus (yellow), petunia nyctaginiflora (white), bougainvillea spectabilis (white and yellow), antirrhinum majus (white and yell ... | 2010 | 20811871 |
| characterisation of pericentrometric and sticky intercalary heterochromatin in ornithogalum longibracteatum (hyacinthaceae). | the hexaploid liliaceous plant ornithogalum longibracteatum (2n=6x=54) has a heterochromatin-rich bimodal karyotype with large (l) and small (s) chromosomes. the composition and subgenomic distribution of heterochromatin was studied using molecular and cytological methods. the major component of centromeric heterochromatin in all chromosomes is satl, an abundant satellite dna with a basic repeat unit of 155 bp and an average a+t content (54%). the major component of the large blocks of intercala ... | 2001 | 11513295 |
| loss and recovery of arabidopsis-type telomere repeat sequences 5'-(tttaggg)(n)-3' in the evolution of a major radiation of flowering plants. | fluorescent in situ hybridization and southern blotting were used for showing the predominant absence of the arabidopsis-type telomere repeat sequence (trs) 5'-(tttaggg)(n)-3' (the 'typical' telomere) in a monocot clade which comprises up to 6300 species within asparagales. initially, two apparently disparate genera that lacked the typical telomere were identified. here, we used the new angiosperm phylogenetic classification for predicting in which other related families such telomeres might hav ... | 2001 | 11487399 |
| [the smooth endoplasmic reticulum develops in mesophyll cells of early-spring ephemerals]. | a study was made of the mesophyll cell ultrastructure of early-spring ephemerals scilla sibirica, crocus vernus, galanthus caucasicus, g. plicatus, leucojum vernum, muscari szovitsianum, ornithogalum balansae of summer-vegetating. scilla scilloides and of s. sibirica growing in greenhouse. the highly developed smooth endoplasmic reticulum (ser) was a distinctive feature of the early-spring ephemeral mesophyll cell during leaf growth (cell expansion). direct connections of ser-compartments with t ... | 2000 | 11204644 |
| cytotoxic cholestane glycosides from the bulbs of ornithogalum saundersiae. | further phytochemical analysis of the bulbs of ornithogalum saundersiae has yielded two new cytotoxic cholestane triglycosides (1 and 2). the structures of these compounds were determined by spectroscopic analysis, including 2d nmr spectroscopic data, and the results of hydrolytic cleavage. compounds 1 and 2 and several analogues were evaluated for their cytotoxicity against hl-60 cells. | 2001 | 11170674 |
| a krimpsiekte-like syndrome in small stock poisoned by ornithogalum toxicarium archer & archer. | krimpsiekte (the syndrome associated with chronic cardiac glycoside poisoning) was purportedly induced by ornithlogalum toxicarium in the karas mountains area of keetmanshoop, namibia. this chinkerinchee species was previously linked to a condition known as 'kwylbek' krimpsiekte in small stock in the beaufort west district of the western cape province, south africa. in a dosing trial, respiratory distress, tachycardia and sternal recumbency were observed in 2 sheep drenched with fresh plant mate ... | 2000 | 10949509 |
| localization of pectins in the pollen tube wall of ornithogalum virens l. does the pattern of pectin distribution depend on the growth rate of the pollen tube? | monoclonal antibodies that recognize pectins were used for the localization of esterified (jim7) and acidic, unesterified (jim5) forms of pectin in pollen tube walls of ornithogalum virens l. (x = n = 3). the results indicated that the distribution of the two forms of pectin in the pollen tube wall depended on the medium (liquid or solid) used for pollen germination. in pollen tubes grown in the liquid medium, the localization of jim7 was limited to the very tip of the pollen tube, whereas the l ... | 2000 | 10787057 |
| the first caldesmon-like protein in higher plants. | using anti-caldesmon polyclonal and monoclonal (raised against the n-terminal fragment of chicken gizzard caldesmon) antibodies, a plant caldesmon-like protein, 107 kda as determined by sds-gel electrophoresis, has been identified based on western blotting of total extracts of ornithogalum virens pollen tubes. biochemical investigations showed common properties of this protein with animal caldesmon--it binds to actin and, in a ca(2+)-dependent manner, to calmodulin. in contrast to animal caldesm ... | 1998 | 9647735 |
| potent growth inhibitory activity of a novel ornithogalum cholestane glycoside on human cells: induction of apoptosis in promyelocytic leukemia hl-60 cells. | growth inhibitory activities of a novel 22-homo-23-norcholestane glycoside found in bulbs of ornithogalum saundersiae were examined in vitro using human promyelocytic leukemia hl-60 cells, human t-lymphocytic leukemia molt-4 cells, and mitogen-stimulated human peripheral-blood mononuclear cells (pbmc). the growth of hl-60 cells and molt-4 cells was strongly suppressed in the presence of the glycoside; the ic50s of which were 21.0 and 18.0 nm, respectively. suppressive effect of the glycoside on ... | 1996 | 8632726 |
| autoradiographic studies on the incorporation of ( 3 h) palmitic acid into lipotubuloids of ornithogalum umbellatum l. | | 1972 | 5052932 |
| geographical patterns of karyotype polymorphism in italian populations of ornithogalum montanum (liliaceae). | the geographical patterns of quinacrine banding polymorphism at 20 sites, and of numbers of accessory (b) chromosomes, were studied in nine italian populations of ornithogalum montanum cyr. ex ten. (liliaceae). eight banding sites appear monomorphic. the standardized gene frequency variance, fst, is heterogeneous among the remaining 12 sites; variation is greatest for four polymorphisms whose frequency is correlated with the winter temperature of the localities studied. a strong negative associa ... | 1989 | 2732089 |
| specific end-to-end attachment of chromosomes in ornithogalum virens. | c-banding of nonhomologous chromosomes in haploid generative nuclei of ornithogalum virens (n = 3) reveals a high degree of specificity with respect to end-to-end connexions. the centromeric end of chromosome 2 preferentially associates with the centromeric end of chromosome 3 and the telomeric end of chromosome 3 associates preferentially with the telomeric end of chromosome 1. this same association of nonhomologous chromosomes persists in prophase nuclei of diploid root tips. in addition, the ... | 1979 | 521471 |
| reverse fluorescent chromosome banding with chromomycin and dapi. | two dna binding guanine-specific antibiotics, chromomycin a3 (cma) and the closely related mithramycin (mm), were used as chromosome fluorescent dyes. root-tip metaphase chromosomes of three plant species and human metaphase chromosomes were sequentially stained with cma or mm and the dna binding at-specific fluorochrome 4'-6-diamidino-2-phenylindole (dapi). in some cases a non-fluorescent counterstain was used as contrasting agent: methyl green in conjunction with cma, and actinomycin d (amd) i ... | 1976 | 137107 |
| accumulation of apocarotenoids in mycorrhizal roots of ornithogalum umbellatum. | colonization of roots of ornithogalum umbellatum by the arbuscular mycorrhizal fungus glomus intraradices induced the accumulation of different types of apocarotenoids. in addition to the mycorrhiza-specific occurrence of cyclohexenone derivatives and the "yellow pigment" described earlier, free mycorradicin and numerous mycorradicin derivatives were detected in a complex apocarotenoid mixture for the first time. from the accumulation pattern of the mycorradicin derivatives their possible integr ... | 2006 | 16790253 |
| actin filaments connected with the microtubules of lipotubuloids, cytoplasmic domains rich in lipid bodies and microtubules. | lipotubuloids, i.e., cytoplasmic domains containing an agglomeration of lipid bodies surrounded by half-unit membrane, entwined and held together by a system of microtubules, have been found in the ovary epidermis of ornithogalum umbellatum. ultrastructural studies demonstrated thin filaments in lipotubuloids that are probably actin filaments arranged parallel to microtubules. it is suggested that interaction of actin filaments with the microtubules determines the driving force for the rotary mo ... | 2005 | 16333575 |
| osw-1: a natural compound with potent anticancer activity and a novel mechanism of action. | the naturally occurring compound 3beta,16beta,17alpha-trihydroxycholest-5-en-22-one 16-o-(2-o-4-methoxybenzoyl-beta-d-xylopyranosyl)-(1-->3)-(2-o-acetyl-alpha-l-arabinopyranoside) (osw-1) is found in the bulbs of ornithogalum saudersiae and is highly cytotoxic against tumor cell lines. using various human cancer and nonmalignant cell lines, we investigated the anticancer activity and selectivity of osw-1 and its underlying mechanisms of action. osw-1 exhibited extremely potent cytotoxic activity ... | 2005 | 16333034 |
| ornithosaponins a-d, four new polyoxygenated steroidal glycosides from the bulbs of ornithogalumthyrsoides. | by analyzing the steroidal glycoside content of fresh bulbs of ornithogalum thyrsoides (liliaceae), we were able to isolate four new polyoxygenated steroidal glycosides, which we named ornithosaponins a-d (1-4). the structures of 1-4 were elucidated on the basis of extensive spectroscopic analysis, including that of 2d nmr data, and the results of acidic or alkaline hydrolysis. the aglycone structure of 1-4 has not been previously reported. it is also notable that ornithosaponins b-d (2-4) have ... | 2006 | 16303157 |
| synthesis of rhamnosylated diosgenyl glucosides as mimetics of cytostatic steroidal saponins from ornithogalum saindersiae and galtonia candicans. | the synthesis of mimetic of the steroid saponins 1 and 2 was investigated. as a substitute for the complex 22-homo-23-nor-steroid moieties a and b in 1 and 2 diosgenin was introduced. the silyl protected thioorthoester 20 was successfully employed for glucosylation. after selective 2--deacetylation, the glucosylated diosgenyl acceptor 23 was rhamnosylated. the 4---methoxybenzoylated donor 12 gave only minor yields. by using the tri--benzoyl protected donor 15 the [small alpha]--rhamnopyranosyl-( ... | 2003 | 14685308 |
| investigation of the antimutagenic effects of selected south african medicinal plant extracts. | dichloromethane extracts from different parts of rhamnus prinoides, ornithogalum longibracteatum, gardenia volkensii, spirostachys africana, diospyros whyteana, syzigium cordatum and prunus africana were investigated for mutagenic and antimutagenic effects in salmonella/microsome and micronucleus tests. none of the extracts tested in the ames test were found to induce mutations or to modify the effect of the mutagen 4-nitroquinoline-oxide (4nqo). in the micronucleus test, extracts from twigs/bar ... | 2004 | 14630059 |
| microtubules with different diameter, protofilament number and protofilament spacing in ornithogalum umbellatum ovary epidermis cells. | microtubules present in the epidermis of ornithogalum umbellatum ovary in the area of lipotubuloids (i.e. aggregates of lipid bodies surrounded by microtubules) are 25-51 nm in diameter. they consist mainly of 10 and 11, sometimes 9 and 12 protofilaments. an average diameter of microtubule consisting of 9 subunits is about 32 nm, of 10-35 nm, of 11-38 nm and of 12-43 nm, however, individual microtubules in each category significantly vary in size. these differences result from varying distance b ... | 2006 | 16805140 |
| cardenolides from ornithogalum boucheanum. | from leaves and bulbs of ornithogalum boucheanum (kunth) aschers. et graebn. (liliaceae), cardenolides were isolated by a combination of column and droplet counter-current chromatography. their structure elucidation was performed mainly by means of (1)h-nmr, (13)c-nmr, ei-ms, and ld-ms studies as well as by acid and/or enzymatic hydrolysis of the glycosides followed by identification of genins and sugar moieties (tlc, gc). eight cardenolides were identified as sarmentogenin-3- o-6'-deoxy-beta- d ... | 1987 | 17268991 |
| role of dna endoreduplication, lipotubuloids, and gibberellic acid in epidermal cell growth during fruit development of ornithogalum umbellatum. | cytophotometry of individual nuclei was used to examine the level of endoreduplication in epidermal cells from the upper and lower parts of the ovary during ornithogalum umbellatum flower and fruit development. an increase in dna content from 2-4c to 2-8c in both parts of the ovary was observed, while the epidermal cell surface area grew about 6-fold and 15-fold in the lower and upper parts of the ovary, respectively. however, the correlation between mean epidermal cell size and ploidy was disti ... | 2007 | 17452750 |
| differential pathogenicity and genetic diversity among pectobacterium carotovorum ssp. carotovorum isolates from monocot and dicot hosts support early genomic divergence within this taxon. | the capability of pectobacterium carotovorum isolates to infect monocotyledonous plants has been previously reported; however, no full consideration was given to characterize the association between such isolates and their monocot hosts. to assess differences in aggressiveness among p. carotovorum ssp. carotovorum isolates originating from monocotyledonous or dicotyledonous plants, we used as model plants two susceptible monocot hosts, the ornamentals zantedeschia aethiopica and ornithogalum dub ... | 2008 | 18681897 |
| diameters of microtubules change during rotation of the lipotubuloids of ornithogalum umbellatum stipule epidermis as a result of varying protofilament monomers sizes and distance between them. | microtubules in lipotubuloids of the ornithogalum umbellatum stipule epidermis cells change their diameters depending on the motion of the cytoplasmic domains rich in microtubules and lipid bodies. microtubules fixed during rotary and progressive motion of the lipotubuloids composed of the same number of protofilaments fall into two populations - wide (43-58 nm) and narrow (24-39 nm) in size. following blockage of the motion with 2,4-dinitrophenol (dnp), the range of this diversity is smaller, m ... | 2009 | 19732846 |
| the protective effects of total saponins from ornithogalum saundersiae (liliaceae) on acute hepatic failure induced by lipopolysaccharide and d-galactosamine in mice. | this study examined the protective effects of total saponins from ornithogalum saundersiae (liliaceae) on d-galactosamine (d-galn) and lipopolysaccharide (lps)-induced fulminant hepatic failure. | 2010 | 20713143 |
| molecular phylogenetics of subfamily ornithogaloideae (hyacinthaceae) based on nuclear and plastid dna regions, including a new taxonomic arrangement. | the taxonomic arrangement within subfamily ornithogaloideae (hyacinthaceae) has been a matter of controversy in recent decades: several new taxonomic treatments have been proposed, based exclusively on plastid dna sequences, and these have resulted in classifications which are to a great extent contradictory. some authors have recognized only a single genus ornithogalum for the whole subfamily, including 250-300 species of variable morphology, whereas others have recognized many genera. in the l ... | 2011 | 21163815 |
| microtubule heterogeneity of ornithogalum umbellatum ovary epidermal cells: non-stable cortical microtubules and stable lipotubuloid microtubules. | lipotubuloids, structures containing lipid bodies and microtubules, are described in ovary epidermal cells of ornithogalum umbellatum. microtubules of lipotubuloids can be fixed in electron microscope fixative containing only buffered oso(4) or in glutaraldehyde with oso(4) post-fixation, or in a mixture of oso(4) and glutaraldehyde [1]. none of these substances fixes cortical microtubules of ovary epidermis of this plant which is characterized by dynamic longitudinal growth. however, cortical m ... | 2011 | 21744330 |
| antidiabetic and cytotoxicity screening of five medicinal plants used by traditional african health practitioners in the nelson mandela metropole, south africa. | diabetes mellitus is a growing problem in south africa and of concern to traditional african health practitioners in the nelson mandela metropole, because they experience a high incidence of diabetic cases in their practices. a collaborative research project with these practitioners focused on the screening of bulbine frutescens, ornithogalum longibracteatum, ruta graveolens, tarchonanthus camphoratus and tulbaghia violacea for antidiabetic and cytotoxic potential. in vitro glucose utilisation a ... | 2011 | 22238496 |