| polysaccharide (ank-102) from polianthes tuberosa cells deteriorates the resistance of mice to listeria monocytogenes infection. | modulatory effect on the murine self defense system by a newly discovered acidic polysaccharide (ank-102) produced by p. tuberosa cells in liquid culture was examined. pretreatment with ank-102 deteriorated the murine survival against lethal infection of listeria monocytogenes, an intracellular gram-positive bacterium eliminated mainly by macrophages through t-cell mediated immune response. pretreatment with ank-102 resulted in the accumulation of mac 1 and mac 2 positive cells in the peritoneal ... | 1995 | 7759775 |
| extracellular polysaccharides produced by tuberose callus. | a high yield of extracellular polysaccharide (ecp) was obtained from callus cultures of tuberose (polianthes tuberosa), which could be separated into an unadsorbed and two acidic fractions (tps-1, -2) by ion-exchange column chromatography. the yields of each fraction were markedly increased by the addition of 10(-5) m 2,4-dichlorophenoxyacetic acid to the medium. of the three fractions, the amount of tps-1 accounted for over 60% of total yield of ecp, which was a predominant polysaccharide consi ... | 1996 | 8722088 |
| effect of different combinations of mgk-264 or piperonyl butoxide with plant-derived molluscicides on snail reproduction. | effect of sublethal treatment (20% and 60% of lc(50)/24 h) of plant-derived molluscicides, viz. polianthes tuberosa, trachyspermum ammi, allium sativum powder; azadirachta indica oil; oleoresin of zingiber officinale; and their active molluscicidal component in combination (1:5) with mgk-264 or piperonyl butoxide on the reproduction of snail lymnaea acuminata have been studied. it was observed that the combination of plant derived molluscicide and their active molluscicidal components, viz. tigo ... | 2000 | 10629280 |
| steroidal glycosides from the aerial parts of polianthes tuberosa. | a chemical investigation of the aerial parts of polianthes tuberosa resulted in the isolation of a new bisdesmosidic cholestane glycoside (1) and three new spirostanol saponins (2-4), along with a known cholestane glycoside. the structures of new glycosides were determined by spectroscopic analysis, including 2d nmr spectroscopic data, and the results of hydrolytic cleavage. the isolated compounds were evaluated for their cytotoxic activity on hl-60 human promyelocytic leukemia cells. | 2000 | 11087596 |
| spirostanol pentaglycosides from the underground parts of polianthestuberosa. | phytochemical analysis of the underground parts of polianthes tuberosa has resulted in the isolation of four new spirostanol saponins with five monosaccharides (1-4). their structures were determined by spectroscopic analysis, including extensive 1d and 2d nmr data, and the results of hydrolytic cleavage. the cytotoxic activities of 1-4 against hl-60 human promyelocytic leukemia cells and hsc-2 human oral squamous cell carcinoma cells are reported. | 2002 | 12398537 |
| a new potyvirus from tuberose ( polianthes tuberosa) in china. | tuberose plants with mild mottle symptoms, growing in a glasshouse in hangzhou, china, contained virions and inclusion bodies typical of a potyvirus. the virus was mechanically transmitted to tuberose but not to 14 other test plant species. a fragment of 4607 nucleotides, corresponding to the 3'-half of a typical potyvirus was amplified by rt-pcr using degenerate primers and sequenced. the most similar sequence in the databases was that of tuberose mild mosaic virus (tummv) from taiwan and this ... | 2004 | 15168198 |
| effect of herbal molluscicides and their combinations on the reproduction of the snail lymnaea acuminata. | effects of sublethal treatment (20 and 60% of lc50/24 h) of the plant-derived molluscicides annona squamosa linn. and lawsonia inermis linn. and their combinations with other herbal molluscicides, such as cedrus deodara roxb, azadirachta indica a. juss, bulb powder of allium sativum linn. and polianthes tuberosa linn., and oleoresin of zingiber officinale rosc., and acetogenins extracted from the seeds of a. squamosa linn., on the reproduction of the snail lymnaea acuminata have been studied. it ... | 2004 | 15253044 |
| antifungal activity of tuberose absolute and some of its constituents. | the antifungal activity of the absolute of tuberose (polianthes tuberosa ) and some of its constituents were evaluated against the mycelial growth of colletotrichum gloeosporioides on potato-dextrose-agar medium. tuberose absolute showed only mild activity at a concentration of 500 mg/l. however, three constituents present in the absolute, namely geraniol, indole and methyl anthranilate exhibited significant activity showing total inhibition of the mycelial growth at this concentration. | 2005 | 16106389 |
| an aphelenchoides sp. nematode parasitic of polianthes tuberosa in the mekong delta. | polianthes tuberosa is a commercially valuable flower crop in the mekong delta of vietnam that is propagated by the harvesting and planting of bulbs. the cultivation of p. tuberosa is complicated by an endemic nematode infection that damages a high proportion of the plants. based on morphological criteria and ribosomal rna gene sequencing, we have determined that the infection is caused by an aphelenchoides sp. nematode and is most likely aphelenchoides besseyi. by scoring various parts of harve ... | 2007 | 19259495 |
| observations on the foliar nematode, aphelenchoides besseyi, infecting tuberose and rice in india. | the foliar nematode aphelenchoides besseyi causes white tip disease in rice (oryza sativa l.) and floral malady in tuberose (polianthes tuberosa l.). this nematode is widely distributed in the rice fields of many states of india, including west bengal (wb), andhra pradesh (ap), madhya pradesh (mp) and gujarat (gt). in order to generate information on intraspecific variations of a. besseyi as well as to confirm the identity of the nematode species infecting these important crops, morphological ob ... | 2012 | 23482906 |
| pathogenicity of four root-knot nematode species to polianthes tuberosa. | | 1970 | 19322296 |
| mosquito larvicidal and biting deterrency activity of bud of polianthes tuberosa plants extract against anopheles stephensi and culex quinquefasciatus. | mosquito control by phytochemicals is an alternative method to synthetic insecticides, as it is biodegradable and non resistant to vector mosquito. polianthes tuberosa is a perennial plant distributed in many parts of india. the present study was undertaken to scientifically evaluate the larvicide and biting deterrency activity of bud of polianthes tuberosa against culex quinquefasciatus and anopheles stephensi. crude and solvent extract [ethyl acetate, chloroform: methanol (1:1, v/v), acetone] ... | 2012 | 25151752 |