| [evaluation of antimicrobial activity of indol alkaloids]. | in pursuing the study of the antimicrobial properties of alkaloids prepared from cuban plants the activity of 10 indol alkaloids and 4 semisynthetic variables obtained from three plants--catharanthus roseus g. don., vallesia antillana wood and ervatamia coronaria staph, of the family apocynaceae--growing in cuba was assessed in vitro. the alkaloids and the variables used were catharantine, vindoline, vindolinine, perivine, reserpine, tabernaemontanine, tetrahydroalstonine, aparicine, vindolinic ... | 1979 | 399043 |
| photodegradable formulatins of ddt. | the incorporation of diphenylamine and diethylaniline in commercial ddt-wdp formulations sprayed on phaseolus aureus and tabernaemontana coronaria revealed that both these chemicals enhanced the initial rate of loss of ddt. both these sensitizers exhibited no immediate adverse effect on the storage stability, ph, sieve requirement and colour of the formulations and introduced no phytotoxicity. diphenylamine addition, however, had some adverse effects on the suspensibility. | 1976 | 1253889 |
| genotoxic effect of alkaloids. | because of the increased use of alkaloids in general medical practice in recent years, it is of interest to determine genotoxic, mutagenic and recombinogenic response to different groups of alkaloids in prokaryotic and eucaryotic organisms. reserpine, boldine and chelerythrine did not show genotoxicity response in the sos-chromotest whereas skimmianine showed genotoxicity in the presence of a metabolic activation mixture. voacristine isolated from the leaves of ervatamia coronaria shows in vivo ... | 1991 | 1842017 |
| hippocratic screening of ethanolic extracts from two tabernaemontana species. | ethanolic extracts of roots, stems, leaves and flowers of tabernaemontana divaricata and t. pandacaqui were studied by an observational (hippocratic) screening method in rats. extracts of all plant parts caused sedation, decreased respiration and decreased skeletal muscle tone. except for the leaf extract of t. pandacaqui, the extracts caused vasodilatation of ear vasculature. analgesic activity was found for all extracts of both tabernaemontana species, except for the flower extract of t. divar ... | 1989 | 2615432 |
| heyneanine hydroxyindolenine, a new indole alkaloid from ervatamia coronaria var. plena. | the whole plant of ervatamia coronaria var. plena obtained from thailand has afforded a new indole alkaloid 19s-heyneanine hydroxyindolenine whose structure was deduced through interpretation of spectral data. nine known alkaloids, coronaridine, coronaridine hydroxyindolenine, voacangine, voacangine hydroxyindolenine, heyneanine, voacristine, 3-oxo-coronaridine, 3-oxo-voacangine,and voacristine hydroxyindolenine, and six common triterpenoids were also isolated. coronaridine was the principal cyt ... | 1988 | 3404150 |
| cytostatic, cytotoxic and mutagenic effects of voacristine, an indole alkaloid in wild-type and repair-deficient yeasts. | voacristine, an indole alkaloid isolated from the leaves of ervatamia coronaria (stapf.) (apocynaceae) has dose-dependent cytostatic and cytotoxic effects on cultures of saccharomyces cerevisiae. these inhibitory effects take place only in growing cells. among the different repair-deficient mutants examined, a mutant defective in excision-resynthesis repair pathway (rad3-e5) was found to be the most sensitive to such a toxic effect. the mutant rad52-1 blocked in the dna strand break repair pathw ... | 1986 | 3523231 |
| isolation of apparicine from the leaves of ervatamia coronaria. | | 1984 | 6512541 |
| ervatamia coronaria: chemical constituents and some pharmacological activities. | a new bisindole alkaloid, 19,20-dihydroervahanine a was isolated from the stems of ervatamia coronaria grown in brazil, together with five known alkaloids: coronaridine, heyneanine, voacristine, voacamine, descarbomethoxyvoacamine and five phenolic acids: vanillic, gentisic, syringic, 4-hydroxybenzoic and salicylic acid. the aqueous and alcoholic extracts, when administered p.o. or i.p. to rats 1 h before subplantar injection of carrageenin had a significant anti-inflammatory effect. the alcohol ... | 1996 | 8778503 |
| tabernaemontana coronaria causing fingertip dermatitis. | | 1996 | 8917831 |
| purification and characterization of a highly stable cysteine protease from the latex of ervatamia coronaria. | a highly stable cysteine protease was purified to homogeneity from the latex of ervatamia coronaria by a simple purification procedure involving ammonium sulfate precipitation and ion-exchange chromatography. the molecular mass was estimated to be approximately 25,000 da by sds-page and gel filtration. the extinction coefficient (epsilon 280 nm 1%) of the enzyme was 24.6. the enzyme hydrolyzed denatured natural substrates like casein, hemoglobin, azoalbumin, and azocasein with a high specific ac ... | 1998 | 9836431 |
| crystallization and preliminary x-ray analysis of ervatamin b and c, two thiol proteases from ervatamia coronaria. | two highly stable cysteine proteases, ervatamin b (erv-b) and ervatamin c (erv-c), purified from the latex of the medicinal plant e. coronaria have been crystallized at room temperature. crystals of erv-b and erv-c diffract to 2.5 and 2.6 a, respectively. the space group is p212121 for the crystals of both proteases with unit-cell parameters a = 47.5, b = 58.8 and c = 68.8 a, and a = 43.8, b = 82.6 and c = 133.1 a, respectively. a self-rotation function for erv-c indicates a twofold non-crystall ... | 1999 | 10216310 |
| blocking of cell proliferation, cytokines production and genes expression following administration of chinese herbs in the human mesangial cells. | in the hope of identifying agents of therapeutic value in immuoglobulin a nephropathy (iga-n), we tested crude methanol extracts of 15 chinese herbs for their effect on human mesangial cell proliferation. the results indicated that 4 out of the 15 crude extracts inhibited human cells proliferation activated by il-1beta and il-6. the extracts and their median inhibitory concentrations were as follows (in microg/ml): ludwiga octovalvis (mls-052), 49.9 +/- 1.8; rhus semialata (mls-053), 31.2 +/- 1. ... | 1999 | 10372651 |
| purification and characterization of a stable cysteine protease ervatamin b, with two disulfide bridges, from the latex of ervatamia coronaria. | latex of the medicinal plant ervatamia coronaria was found to contain at least three cysteine proteases with high proteolytic activity, called ervatamins. one of these proteases, named ervatamin b, has been purified to homogeneity using ion-exchange chromatography and crystallization. the molecular mass of the enzyme was estimated to be 26 000 da by sds-page and gel filtration. the extinction coefficient (epsilon(1%)(280 nm)) of the enzyme was 20.5 with 7 tryptophan and 10 tyrosine residues per ... | 2000 | 10691612 |
| a study on the activities of a few free radicals scavenging enzymes present in five roadside plants. | the road side plants are continuously exposed to the high levels of oxides of nitrogen and sulphur dioxide, emitted from automobile. resistance to automobile exhaust pollution was studied with nerium indicum mill, boerhaavia diffusa l., amaranthus spinosus l., cephalandra indica naud., and tabernaemontana divaricata l., growing on the edges of delhi road, national highway 2 (nh 2) near dankuni, west bengal. by analysing the activities of a few enzymes like superoxide dismutase, catalase, ascorba ... | 2001 | 12018603 |
| purification and biochemical characterization of a highly active cysteine protease ervatamin a from the latex of ervatamia coronaria. | ervatamia coronaria, a flowering plant (family apocynaceae) indigenous to india, has medicinally important applications. a search for biochemical constituents of the latex of the plant yielded at least three thiol proteases with distinctly different properties. one of them, a highly active protease (ervatamin a), was purified to homogeneity by ion exchange and gel filtration chromatography. the enzyme exhibited high proteolytic activity toward natural substrates and amidolytic activity toward sy ... | 2003 | 12739893 |
| proposed amino acid sequence and the 1.63 a x-ray crystal structure of a plant cysteine protease, ervatamin b: some insights into the structural basis of its stability and substrate specificity. | the crystal structure of a cysteine protease ervatamin b, isolated from the medicinal plant ervatamia coronaria, has been determined at 1.63 a. the unknown primary structure of the enzyme could also be traced from the high-quality electron density map. the final refined model, consisting of 215 amino acid residues, 208 water molecules, and a thiosulfate ligand molecule, has a crystallographic r-factor of 15.9% and a free r-factor of 18.2% for f > 2sigma(f). the protein belongs to the papain supe ... | 2003 | 12784208 |
| biologically active indole and bisindole alkaloids from tabernaemontana divaricata. | the ethanol extract of the leaves of tabernaemontana divaricata (double flower variety) provided a total of 23 alkaloids, including the new aspidosperma alkaloids, taberhanine, voafinine, n-methylvoafinine, voafinidine, voalenine and the new bisindole alkaloid, conophyllinine in addition to the previously known, biologically active bisindole, conophylline and its congener, conofoline. the structures of the new alkaloids were established by spectroscopic methods. the preparation and characterizat ... | 2003 | 12929658 |
| a high cysteine containing thiol proteinase from the latex of ervatamia heyneana: purification and comparison with ervatamin b and c from ervatamia coronaria. | a cysteine protease, with a high cysteine content and a high degree of amino terminal sequence homology with ervatamins b and c, has been purified from the latex of ervatamia heyneana (family apocynaceae). the enzyme designated as heynein (m(r) = 23 kda) has a comparatively high cysteine content (11), high isoelectric point (10.8), and high stability against ph (2.5-11.5), temperature (63 degrees c, 15 min), strong denaturants, and organic solvents. the enzyme has high specific activities for na ... | 2003 | 14518963 |
| screening for acetylcholinesterase inhibitory activity in plants used in thai traditional rejuvenating and neurotonic remedies. | acetylcholinesterase (ache) inhibitor has been used as a drug for the symptomatic treatment of alzheimer's disease. in order to search for new ache inhibitors, 32 plants used in thai traditional rejuvenating and neurotonic remedies were collected. the plant methanolic extracts were tested for ache inhibitory activity using ellman's colorimetric method in 96-welled microplates. the results showed that the methanolic extracts from roots of stephania suberosa forman. and tabernaemontana divaricata ... | 2003 | 14611889 |
| structural basis of the unusual stability and substrate specificity of ervatamin c, a plant cysteine protease from ervatamia coronaria. | ervatamin c is an unusually stable cysteine protease from the medicinal plant ervatamia coronaria belonging to the papain family. though it cleaves denatured natural proteins with high specific activity, its activity toward some small synthetic substrates is found to be insignificant. the three-dimensional structure and amino acid sequence of the protein have been determined from x-ray diffraction data at 1.9 a (r = 17.7% and r(free) = 19.0%). the overall structure of ervatamin c is similar to t ... | 2004 | 14769029 |
| dust accumulation and leaf pigment content in vegetation near the national highway at sambalpur, orissa, india. | an investigation on the seasonal variation in dust accumulation on leaves and leaf pigment content of six plant species of mixed habits was carried out at the side of the national highway (nh 6) at sambalpur, orissa, india. the plants selected for study were pongamia pinnata, tabernaemontana divaricata, ipomea carnea, ficus relogiosa, ficus benghalensis, and quisqualis indica. the observed trend of dust accumulation was in the order t. divaricata>i. carnea>p. pinnata>f. religiosa>f. benghalensis ... | 2005 | 15546639 |
| cytotoxicity of plants from malaysia and thailand used traditionally to treat cancer. | the srb cytotoxicity assay was used to screen extracts and isolated constituents of some traditional medicinal plants from malaysia and thailand against two human cancer cell lines, cor l23 lung cancer cell line and mcf7 breast cancer cell line and the non-cancer mcf5 cell line. five out of the seven species tested, i.e. thai alpinia galanga, alpinia officinarum, cayratia japonica, physalis minima, tabernaemontana divaricata, exhibited interesting cytotoxicity activity and this is the first repo ... | 2005 | 15888378 |
| crystallization and preliminary x-ray diffraction studies of the cysteine protease ervatamin a from ervatamia coronaria. | the ervatamins are highly stable cysteine proteases that are present in the latex of the medicinal plant ervatamia coronaria and belong to the papain family, members of which share similar amino-acid sequences and also a similar fold comprising two domains. ervatamin a from this family, a highly active protease compared with others from the same source, has been purified to homogeneity by ion-exchange chromatography and crystallized by the vapour-diffusion method. needle-shaped crystals of ervat ... | 2005 | 16511096 |
| vobasinyl-iboga bisindole alkaloids, potent acetylcholinesterase inhibitors from tabernaemontana divaricata root. | the roots of the thai medicinal plant, tabernaemontana divaricata (l.) r. br. ex roem. & schult., were investigated for their content of acetylcholinesterase inhibitors. bioassay-guided fractionation using the ellman colorimetric method led to the isolation of two bisindole alkaloids, 19,20-dihydrotabernamine and 19,20-dihydroervahanine a. the compounds showed higher inhibitory activity on acetylcholinesterase in comparison with galanthamine, a well-known acetylcholinesterase inhibitor. the inhi ... | 2006 | 16734986 |
| tabernaemontana divaricata extract inhibits neuronal acetylcholinesterase activity in rats. | the current pharmacotherapy for alzheimer's disease (ad) is the use of acetylcholinesterase inhibitors (ache-is). a previous in vitro study showed that tabernaemontana divaricata extract (tde) can inhibit ache activity. however, neither the ache inhibitory effects nor the effect on neuronal activity of tde has been investigated in vivo. to determine those effects of tde in animal models, the ellman's colorimetric method was implemented to investigate the cortical and circulating cholinesterase ( ... | 2007 | 17023131 |
| biologically active ibogan and vallesamine derivatives from tabernaemontana divaricata. | six new indole alkaloids, viz., (3s)-3-cyanocoronaridine (2), (3s)-3-cyanoisovoacangine (3), conolobine a (5), conolobine b (6), conolidine (7), and (3r/3s)-3-ethoxyvoacangine (8), in addition to 36 known ones, were obtained from the stem-bark extract of the malayan tabernaemontana divaricata. the structures were determined by nmr and ms analysis. the cn-substituted alkaloids showed appreciable cytotoxicity towards the kb human oral epidermoid carcinoma cell-line. | 2004 | 17191876 |
| search for factors related to the indole alkaloid production in cell suspension cultures of tabernaemontana divaricata. | three strains derived from one cell line of a suspension culture of tabernaemontana divaricata were obtained by subculturing on three different media: (i) strain a: normal ms-medium (1), (ii) strain s: medium in which the carbon source was starch instead of sucrose, and (iii) strain n: medium in which the ammonium/nitrate ratio was changed from 1: 2 to 1:1. the alkaloid contents of all three strains were compared at each subculture for nearly one year. strain n showed after its initiation a grad ... | 1992 | 17226465 |
| analysis of several iridoid and indole precursors of terpenoid indole alkaloids with a single hplc run. | an isocratic hplc system is described which allows the separation of the iridoid and indole precursors of terpenoid indole alkaloids, which are present in a single crude extract. the system consists of a column of lichrospher 60 rp select b 5 microm, 250 x 4 mm (merck) with an eluent of 1% formic acid-acetonitrile-trichloroacetic acid (100:10:0.25, v:v:w) at a flow of 1.2 ml/min. in the suspension cultures of catharanthus roseus secologanin and tryptophan were detected. in the cultures of tabern ... | 1996 | 17252445 |
| accumulation of indole alkaloids in a suspension culture of tabernaemontana divaricata. | cell suspension cultures of tabernaemontana divaricata were found to produce relatively large amounts of indole alkaloids. for their isolation an ion-pair dccc method was used in combination with preparative tlc. the alkaloids were identified as tabernaemontanine, perivine, vobasine, voaphylline, voaphylline-hydroxyindolenine, vallesamine, apparicine, 16-hydroxy-16,22-dihydroapparicine, pericyclivine, tubotaiwine, 19- s-heyneanine, and coronaridine. voaphylline, the main alkaloid, was produced d ... | 1988 | 17265301 |
| isolation and 1h/13c-nmr studies on 19,20-dihydrocondylocarpine: an alkaloid from the leaves of ervatamia coronaria and alstonia scholaris. | studies on the alkaloidal constituents of the leaves of ervatamia coronaria stapf and alstonia scholaris have resulted in the isolation of (20 s)-19,20-dihydrocondylocarpine which has not been previously reported from these plants. the stereochemistry at c-20 was established with the help of n. o. e. difference measurements. (13)c-nmr assignments have been made by polarisation transfer techniques. | 1986 | 17345322 |
| accumulation of partly folded states in the equilibrium unfolding of ervatamin a: spectroscopic description of the native, intermediate, and unfolded states. | ervatamin a, a cysteine proteases from ervatamia coronaria, has been used as model system to examine structure-function relationship by equilibrium unfolding methods. ervatamin a belongs to alpha+beta class of proteins and exhibit stability towards temperature and chemical denaturants. acid induced unfolding of ervatamin a was incomplete with respect to the structural content of the enzyme. between ph 0.5 and 2.0, the enzyme is predominantly in beta-sheet conformation and shows a strong ans bind ... | 2007 | 17658212 |
| structural insights into the substrate specificity and activity of ervatamins, the papain-like cysteine proteases from a tropical plant, ervatamia coronaria. | multiple proteases of the same family are quite often present in the same species in biological systems. these multiple proteases, despite having high homology in their primary and tertiary structures, show deviations in properties such as stability, activity, and specificity. it is of interest, therefore, to compare the structures of these multiple proteases in a single species to identify the structural changes, if any, that may be responsible for such deviations. ervatamin-a, ervatamin-b and ... | 2008 | 18167146 |
| studies on cytotoxic, hydroxyl radical scavenging and topoisomerase inhibitory activities of extracts of tabernaemontana divaricata (l.) r.br. ex roem. and schult. | in the present investigation, the cytotoxic, hydroxyl radical scavenging and topoisomerase inhibition activities of tabernaemontana divaricata (apocynaceae) were evaluated. the extracts from leaves of the plant were prepared with different solvents viz. chloroform, methanol, ethyl acetate and hexane. in, in vitro cytotoxicity assay, with cell lines viz hct-15 (colon), ht-29 (colon), 502713 (colon), mcf-7 (breast), pc- 3 (prostrate), it was observed that the ethyl acetate extract was effective ag ... | 2008 | 18577413 |
| ethnobotany & ethnopharmacology of tabernaemontana divaricata. | tabernaemontana divaricata a common garden plant in tropical countries has been used as a traditional medicine. however, no recent review articles of t. divaricata, particularly discussing its pharmacological properties, are available. this review presents the ethnobotany and ethnopharmacology of t. divaricata as well as its potential therapeutic benefits especially of the alkaloidal and non-alkaloidal constituents. included, are the characteristics of 66 alkaloids isolated and identified from t ... | 2008 | 18577786 |
| antidiabetic effect of orally administered conophylline-containing plant extract on streptozotocin-treated and goto-kakizaki rats. | conophylline, a vinca alkaloid from ervatamia microphylla, is known to induce the differentiation of pancreatic precursor cells to insulin-producing cells. in the present research we examined the antidiabetic effects of this alkaloid in vivo by oral administration. crude conophylline preparations were prepared from the leaves of tabernaemontana divaricata collected in okinawa prefecture, japan. conophylline was orally absorbed and showed an increase in its plasma level in both normal and strepto ... | 2009 | 19217246 |
| phytochemical investigation and evaluation of in vitro free radical scavenging activity of tabernaemontana divaricata linn. | we evaluate the in vitro free radical scavenging activity of the leaves of tabernaemontana divaricata linn. petroleum ether, ethanol and aqueous extracts of t. divaricata were prepared with successive extraction in a soxhlet apparatus. each extract was selected to study the free radical scavenging activity by superoxide scavenging assay method. it was found that the aqueous extract contained carbohydrates, glycosides, amino acids, flavonoids, tannins, alkaloids, and steroids, and the ethanolic e ... | 2010 | 20140809 |
| evaluation of anti-fertility activity of tabernaemontana divaricata (linn) r.br. leaves in rats. | the aim of the present study was to assess the anti-fertility activity of ethanolic extracts of tabernaemontana divaricata (td) leaves in oestrogenic activity models in immature female rats. mature green leaves of td were collected and authenticated. extractions of the dried leaves were carried out with ethanol in a soxhlet's apparatus. for oestrogenic activity, the extracts were administered orally once daily at a dose of 200 and 400 mg kg(-1), and the activity was compared with the standard dr ... | 2010 | 20306358 |
| reversible acetylcholinesterase inhibitory effect of tabernaemontana divaricata extract on synaptic transmission in rat ca1 hippocampus. | acetylcholinesterase inhibitors (ache-is) are used for the treatment of alzheimer's disease (ad). these drugs including galanthamine have been shown to modulate synaptic activity in hippocampus and improve memory processes. although tabernaemontana divaricata extract (tde) has been used as traditional medicine for various pharmacological effects, its effect in enhancing cholinergic activity provides additional benefit to its known effects. we investigated whether tde can modulate the synaptic fu ... | 2010 | 20418555 |
| the effects of tabernaemontana divaricata root extract on amyloid beta-peptide 25-35 peptides induced cognitive deficits in mice. | ethnophamacological relevance: tabernaemontana divaricata (td), a thai medicinal herb, has been widely used as an analgesic, sedative, or a cough syrup. moreover, it has been used in traditional rejuvenation remedies as for preventing forgetfulness and improving the memory. | 2010 | 20435125 |
| mosquito larvicidal and phytochemical properties of ervatamia coronaria stapf. (family: apocynaceae). | | 2010 | 20834089 |
| antituberculosis potential of some ethnobotanically selected malaysian plants. | many local plants are used in malaysian traditional medicine to treat respiratory diseases including symptoms of tuberculosis. the aim of the study was to screen 78 plant extracts from 70 malaysian plant species used in traditional medicine to treat respiratory diseases including symptoms of tuberculosis for activity against mycobacterium tuberculosis h37rv using a colorimetric microplate-based assay. | 2010 | 21094237 |
| mosquito larvicidal, ovicidal, and repellent properties of botanical extracts against anopheles stephensi, aedes aegypti, and culex quinquefasciatus (diptera: culicidae). | mosquito-borne diseases have an economic impact, including loss in commercial and labor outputs, particularly in countries with tropical and subtropical climates; however, no part of the world is free from vector-borne diseases. in mosquito control programs, botanical origin may have the potential to be used successfully as eggs, larvae, and adult. the larvicidal, ovicidal, and repellent activities of crude benzene and ethyl acetate extracts of leaf of ervatamia coronaria and caesalpinia pulcher ... | 2011 | 21318385 |
| synthesis of conolidine, a potent non-opioid analgesic for tonic and persistent pain. | management of chronic pain continues to represent an area of great unmet biomedical need. although opioid analgesics are typically embraced as the mainstay of pharmaceutical interventions in this area, they suffer from substantial liabilities that include addiction and tolerance, as well as depression of breathing, nausea and chronic constipation. because of their suboptimal therapeutic profile, the search for non-opioid analgesics to replace these well-established therapeutics is an important p ... | 2011 | 21602859 |
| an inventory of the ethnobotanicals used as anti-diabetic by a rural community of dhemaji district of assam, northeast india. | traditional remedies used for treating diabetic ailments are very important in the primary health care of the people living in rural dhemaji district of assam, north-east india. novel information gathered from the current survey is important in preserving folk indigenous knowledge. | 2011 | 21871548 |
| ovicidal and repellent activities of botanical extracts against culex quinquefasciatus, aedes aegypti and anopheles stephensi (diptera: culicidae). | to determine the ovicidal and repellent activities of methanol leaf extract of ervatamia coronaria (e. coronaria) and caesalpinia pulcherrima (c. pulcherrima) against culex quinquefasciatus (cx. quinquefasciatus), aedes aegypti (ae. aegypti) and anopheles stephensi (an. stephensi). | 2011 | 23569723 |
| anti-fertility effect of flower extracts of tabernaemontana divaricata in rats. | to evaluate the anti-fertility effect of methanolic (metd) and aqueous (aqtd) flower extracts of tabernaemontana divaricata in rats. | 2012 | 23302533 |
| hemostatic potential of latex proteases from tabernaemontana divaricata (l.) r. br. ex. roem. and schult. and artocarpus altilis (parkinson ex. f.a. zorn) forsberg. | pharmacological properties exhibited by latex of plants are due to various biologically active compounds including several proteolytic enzymes. present study evaluates hemostatic potential of tabernaemontana divaricata and artocarpus altilis from apocynaceae and moraceae families respectively. the latex of these plants were initially subjected to dialysis and crude extracts were estimated for proteolytic activity using casein as the substrate. mean caseinolytic activity for 100 μg of latex prote ... | 2015 | 25603786 |
| subcellular localization of tryptophan decarboxylase, strictosidine synthase and strictosidine glucosidase in suspension cultured cells of catharanthus roseus and tabernaemontana divaricata. | the subcellular localization of tryptophan decarboxylase, strictosidine synthase and strictosidine glucosidase in suspension cultured cells of catharanthus roseus (l.) g. don and tabernaemontana divaricata (l.) r. br. ex roem. et schult, was investigated. it was found that tryptophan decarboxylase is an extra-vacuolar enzyme, whereas strictosidine synthase is active inside the vacuole. strong indications were obtained for the localization of strictosidine glucosidase on the outside of the tonopl ... | 1993 | 24201788 |
| the genus rhamphothrips in india (thysanoptera: thripidae) with description of a new species . | rhamphothrips bhattii sp.n. is described from india based on specimens collected on flowers and leaves of tabernaemontana divaricata (apocynaceae) in the states of west bengal and odisha. the pronotum of this species is longer than any other known member of the genus. a key to the six species of rhamphothrips recorded from india is provided. | 2013 | 25113365 |