| [a comparative identification of four gynostemma spp. herbs and their various species from guangxi]. | in this paper, the authors have described the morphological and histological character of the four herbs of gynostemma spp. and their confused species from guangxi viz gynostemma pentaphyllum, g. guangxiense, g. laxum and g. longipes, and their confused species of four hemsleya daxienensis, h. chinensis, cayratia japonica and c. japonica var. pubifolia. the description is illustrated with line-drawings for comparative identification. | 1989 | 2505800 |
| 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 |
| [molecular characters of centella asiatica found with rapd technology]. | to analyze the dna molecular characters of centella asiatica with rapd technology. | 2008 | 18973007 |
| vine tendrils use contact chemoreception to avoid conspecific leaves. | movement and growth habit of climbing plants have attracted attention since the time of charles darwin; however, there are no reports on whether plants can choose suitable hosts or avoid unsuitable ones based on chemoreception. here, i show that the tendrils of cayratia japonica (vitaceae) appear to avoid conspecific leaves using contact chemoreception for oxalates, which are highly concentrated in c. japonica leaves. the coiling experiments show that c. japonica has a flexible plastic response ... | 2017 | 28250182 |
| molecular authentication of gynostemma pentaphyllum through development and application of random amplification polymorphic dna sequence-characterized amplified region marker. | due to the morphological similarities of aerial parts, it is difficult to distinguish gynostemma pentaphyllum from cayratia japonica, which is usually an adulterant of the former. to develop a reliable method for the identification and authentication of g. pentaphyllum, a combination of random amplification polymorphic dna (rapd) technique with sequence-characterized amplified region (scar) markers was studied. twenty-five samples of g. pentaphyllum and two samples of c. japonica were collected ... | 2015 | 26662413 |
| chloroplast avoidance movement is not functional in plants grown under strong sunlight. | chloroplast movement in nine climbing plant species was investigated. it is thought that chloroplasts generally escape from strong light to avoid photodamage but accumulate towards weak light to perform photosynthesis effectively. unexpectedly, however, the leaves of climbing plants grown under strong sunlight showed very low or no chloroplast photorelocation responses to either weak or strong blue light when detected by red light transmittance through leaves. direct observations of cayratia jap ... | 2016 | 26586173 |
| self-discrimination in the tendrils of the vine cayratia japonica is mediated by physiological connection. | although self-discrimination has been well documented, especially in animals, self-discrimination in plants has been identified in only a few cases, such as self-incompatibility in flowers and root discrimination. here, were port a new form of self-discrimination in plants: discrimination by vine tendrils. we found that tendrils of the perennial vine cayratia japonica were more likely to coil around neighbouring non-self plants than neighbouring self plants in both experimental and natural setti ... | 2015 | 26311669 |
| lineage diversification and hybridization in the cayratia japonica-cayratia tenuifolia species complex. | the cayratia japonica-cayratia tenuifolia species complex (vitaceae) is distributed from temperate to tropical east asia, southeast asia, india, and australia. the spatiotemporal diversification history of this complex was assessed through phylogenetic and biogeographic analyses. maximum parsimony, neighbor-joining, and maximum likelihood methods were used to analyze sequences of one nuclear (as1) and two plastid regions (trnl-f and trnc-petn). bayesian dating analysis was conducted to estimate ... | 2014 | 24508603 |
| [preliminary study on chemical constituents seperated from cayratia japonica]. | to study effective active constituents of cayratia japonica,a genuine herbal medicine from fujian. | 2012 | 23270231 |
| coincidental intraguild predation by caterpillars on spider mites. | intraguild predation (igp) is defined as the killing and eating of prey species by a predator that also can utilize the resources of the prey. it is mainly reported among carnivores that share common herbivorous prey. however, a large chewing herbivore could prey upon sedentary and/or micro herbivores in addition to utilizing a host plant. to investigate such coincidental igp, we observed the behavioral responses of the polyphagous mite tetranychus kanzawai kishida (acari: tetranychidae) when it ... | 2012 | 22286142 |
| a hypothesis on the origin of genetic heterozygosity in diploids and triploids in japanese cayratia japonica species complex (vitaceae). | we previously reported the occurrence of triploid strains in japanese populations of cayratia japonica (thunb.) gagnep. interestingly, the triploid and most diploid strains had variably reduced pollen fertility. two questions emerged from this earlier work: (1) how do triploids arise, and are they allotriploids or autotriploids? and (2) why is there low pollen fertility in some diploid plants? we used a molecular genetic approach to determine the phylogenetic origins of triploids in c. japonica ... | 2012 | 22200910 |
| two new resveratrol tetramers isolated from cayratia japonica (thunb.) gagn. with strong inhibitory activity on fatty acid synthase and antioxidant activity. | two new resveratrol tetramers, cajyphenol a (1) and cajyphenol b (2), together with two known resveratrol dimers, quadrangularin a (3) and pallidol (4), and resveratrol (5) were isolated from the stems of cayratia japonica (thunb.) gagn. their structures were established by means of nmr (¹h,¹h-cosy, ¹h, ¹³c-hsqc, hmbc, and noesy) and esi-ms analyses. compounds 1-5 showed fast-binding inhibitory activities on fatty acid synthase with the ic₅₀ values of 1.63±0.02, 1.49±0.03, 7.50±0.01, 11.1±0.01, ... | 2010 | 21162006 |
| [fingerprints identification of gynostemma pentaphyllum by rapd and cloning and analysis of its specific dna fragment]. | to identify the resources of gynostemma pentaphyllum and its spurious breed plant cayratia japonica at level of dna. | 2009 | 19504959 |
| [identification of gynostemma from their adulterant cayratia japonica by pcr-rflp]. | to establish a convenient and effective method for the identification of gynostemma and cayratia japonica. | 2008 | 19165997 |
| monoamine oxidase inhibitory components from cayratia japonica. | seven flavonoids were isolated from the whole plants and fruits of cayratia japonica through the activity-guided isolation of a methanol extract using a monoamine oxidase (mao) inhibition assay as a monitor. the chemical structures of the isolates were assigned as apigenin-7-o-beta-d-glucuronopyranoside (1), apigenin (2), luteolin (3), luteolin-7-o-beta-d-glucopyranoside (4), (+)-dihydroquercetin (taxifolin) (5), (+)-dihydrokaempferol (aromadendrin) (6) and quercetin (7). among the isolated comp ... | 2007 | 17328236 |