| occupational contact dermatitis due to croton (codiaeum variegatum (l.) a. juss var. pictum (lodd.) muell. arg.). sensitization by plants of the euphorbiaceae. | one of today's most decorative and popular ornamental potted plants is croton. handling this plant over a period of 6 months produced contact eczema of the hands in a nursery gardener. patch tests with croton leaves were positive. control tests remained negative. sensitization experiments in guinea pigs with a methanolic extract of the leaves were successful. all results of the study indicate that: -latex of croton produces no primary irritant reaction -latex is able to induce a real contact all ... | 1977 | 146585 |
| larvicidal potential of five philippine plants against aedes aegypti (linnaeus) and culex quinquefasciatus (say). | five species of philippine plants, reported in the literature to have insecticidal properties, were selected for investigation, namely: anona squamosa ("atis" or sugar apple), eucalyptus globulus ("bagras" or olive gum eucalyptus), lansium domesticum ("lansones"), azadirachta indica ("neem") and codiaeum variegatum ("san francisco" or croton). these were screened and assayed for their larvicidal potential against aedes aedes aegypti (linnaeus) and culex quinquefasciatus (say) by exposing 3rd-4th ... | 1994 | 7667727 |
| tumour promoter activity in malaysian euphorbiaceae. | herbal medication has been practised by the rural malaysian malays for a long time. however, the long-term side-effects have never been studied. in the present study, 48 species of euphorbiaceae were screened for tumour-promoter activity by means of an in vitro assay using a human lymphoblastoid cell line harbouring the epstein-barr virus (ebv) genome. twenty-seven per cent (13 out of 48) of the species tested were found to be positive, and in four species, namely breynia coronata hk.f, codiaeum ... | 1995 | 7710943 |
| tumor promoters in commercial indoor-plant cultivars of the euphorbiaceae. | certain decorative indoor-plant cultivars are derived from toxic wild plant species. native members of the euphorbiaceae (spurge) contain highly irritating and tumor-promoting diterpene esters. plant breeders and gardeners are constantly searching for less toxic cultivars of the popular euphorbiaceae indoor plants. in this investigation, 22 commercial cultivars of euphorbiaceae indoor plants were examined for tumor promoter contents by high-performance liquid chromatography (hplc). cultivars of ... | 1999 | 10464076 |
| in vitro anti-influenza screening of several euphorbiaceae species: structure of a bioactive cyanoglucoside from codiaeum variegatum. | a bio-guided screening against influenza a virus (fluav) was carried out with seven euphorbiaceae species. the results showed that chromatographic fractions from phyllantus niruri, euphorbia pulcherrima and codiaeum variegatum had relevant anti-fluav activity, although only chromatographical subfractions from c. variegatum kept the activity. from this plant, the active compound against fluav was isolated. its structure was assigned as 2-(3,4,5)-trihydroxy-6-hydroxymethyltetrahydropyran-2-yloxyme ... | 2008 | 18851862 |
| rotylenchulus reniformis on greenhouse-grown foliage plants: host range and sources of inoculum. | two sources of inoculum of reniform nematodes, rotylenchulus reniformis, were identified for infestation of ornamental foliage plants in commercial greenhouses. these were water from a local canal system and rooted cuttings purchased from other sources. eight ornamental plant species were identified as good hosts for the reniform nematode, with each species supporting a reniform population density equal to or greater than that supported by 'rutgers' tomato and a reproduction factor of greater th ... | 1991 | 19283176 |
| biological control of citrus mealybug, planococcus citri (risso) using coccinellid predator, cryptolaemus montrouzieri muls. | the coccinellid predator, cryptolaemus montrouzieri mulsant (coleoptera: coccinellidae) was used to control the citrus mealybug, planococcus citri (risso) (homoptera: pseudococcidae) on the croton ornamental shrubs, codiaeum variegatum l. at giza governorate, egypt. cryptolaemus montrouzieri mulsant, 50 adults/croton shrub, were released once on october 27, 2008 in the open field. obtained results indicated that percentages of reduction among the egg masses, nymphs and adults of p. citri, one mo ... | 2010 | 20464943 |
| in vitro genotoxic and mutagenic evaluation of the aqueous extract of codiaeum variegatum and its amoebicidal sub-fraction. | codiaeum variegatum, grown in many varieties, has been widely used as a houseplant based on its brightly decorative foliage. in addition, a variety of this plant has been used for a long time against bloody diarrhea by the local population in cameroon. | 2014 | 24971796 |
| bioassay-guided fractionation of extracts from codiaeum variegatum against entamoeba histolytica discovers compounds that modify expression of ceramide biosynthesis related genes. | leaves of codiaeum variegatum ("garden croton") are used against bloody diarrhoea by local populations in cameroon. this study aims to search for the active components from c. variegatum against entamoeba histolytica, and thereby initiate the study of their mechanism of action. a bioassay-guided screening of the aqueous extracts from c. variegatum leaves and various fractions was carried out against trophozoites of e. histolytica axenic culture. we found that the anti-amoebic activity of extract ... | 2014 | 24416462 |
| attractive toxic sugar baits mixed with pyriproxyfen sprayed on plants against adult and larval aedes albopictus (diptera: culicidae). | the effect of spraying a mixture of the insect growth regulator (igr) pyriproxyfen (1 mg/liter) and either 1% boric acid sugar bait or eugenol sugar bait on croton petra plants (codiaeum variegatum l.) was evaluated against the container-inhabiting mosquito, aedes albopictus (skuse). treatments were applied to plants and evaluated against adult and larval ae. albopictus in the laboratory through contact and wash off experiments, respectively. the control treatment lacked an active ingredient and ... | 2014 | 25118427 |
| in vitro anti-oxidant activity and hplc-dad system based phenolic content analysis of codiaeum variegatum found in bangladesh. | this study evaluated the in vitro antioxidant potential of two varieties of codiaeum variegatum leaves (spiral (cp) and royal like (bp)) extracts. | 2014 | 25671186 |
| effect of different concentrations of benzyladenine and frequency of watering on growth and quality of dracaena sanderiana and codiaeum variegatum. | the effect of benzyladenine concentration and watering frequency on the growth and quality of dracaena sanderiana and codiaeum variegatum was evaluated. plants were treated with different benzyladenine concentrations of (0, 75, 150, 225 or 300 mg l(-1)) and watering frequencies, daily, every 4, 7 or 10 days interval. benzyladenine concentration and watering frequency interacted significantly for plant grade on both species. this interaction resulted in the highest grade at 225 mg l(-1) benzylade ... | 2014 | 25522504 |
| impacts of temperature on the stability of tropical plant pigments as sensitizers for dye sensitized solar cells. | natural dyes have become a viable alternative to expensive organic sensitizers because of their low cost of production, abundance in supply, and eco-friendliness. we evaluated 35 native plants containing anthocyanin pigments as potential sensitizers for dsscs. melastoma malabathricum (fruit pulp), hibiscus rosa-sinensis (flower), and codiaeum variegatum (leaves) showed the highest absorption peaks. hence, these were used to determine anthocyanin content and stability based on the impacts of stor ... | 2014 | 24707286 |
| micropropagation of codiaeum variegatum (l.) blume and regeneration induction via adventitious buds and somatic embryogenesis. | codiaeum variegatum (l) blume cv. "corazon de oro" and cv. "norma" are successfully micropropagated when culture are initiated with explants taken from newly sprouted shoots. the establishment and multiplication steps are possible when 1 mg/l ba or 1 mg/l iaa and 3 mg/l 2ip are added to ms medium, according to the cultivar respectively selected.adventive organogenesis and somatic embryogenesis are induced from leaf explants taken from in vitro buds of croton. on leaf-sectioned of "corazon de oro ... | 2010 | 20099102 |
| microsporogenesis variation in codiaeum producing inaperturate pollen grain. | a study of microsporogenesis (the earliest stage of pollen ontogeny) was undertaken in seven cultivars of codiaeum variegatum var. pictum, a eudicot species that produces inaperturate pollen grains. microsporogenesis appears highly variable for the developmental events suspected to be implicated in the determination of aperture pattern. most eudicots have tri-aperturate pollen grains and microsporogenesis is described as highly conserved in this clade. the observed burst of variation in c. varie ... | 2009 | 19520313 |
| independence of stem and leaf hydraulic traits in six euphorbiaceae tree species with contrasting leaf phenology. | hydraulic traits and hydraulic-related structural properties were examined in three deciduous (hevea brasiliensis, macaranga denticulate, and bischofia javanica) and three evergreen (drypetes indica, aleurites moluccana, and codiaeum variegatum) euphorbiaceae tree species from a seasonally tropical forest in south-western china. xylem water potential at 50% loss of stem hydraulic conductivity (p50(stem)) was more negative in the evergreen tree, but leaf water potential at 50% loss of leaf hydrau ... | 2009 | 19495788 |
| new vegetation indices for remote measurement of chlorophylls based on leaf directional reflectance spectra. | directional reflectance (r) spectra from 380 to 780 nm for nadir illuminated leaves of four different plants (croton, codiaeum variegatum; spotted eleagnus, eleagnus pungens maculata; japanese pittosporum, pittosporum tobira and benjamin fig, ficus benjamina starlight) were acquired at a viewing angle of 30 degrees from the nadir direction. chlorophyll-a and -b content of leaves covered a range of 1-60 and 0.5-21 microg/cm(2), respectively. in contrast with previous results from hemispherical re ... | 2001 | 11485848 |
| occupational contact dermatitis due to codiaeum variegatum and possibly to aeschynantus pulcher. | codiaeum variegatum is a plant that has a rather strong sensitizing capacity as appeared from an examination in a large nursery of so called crotons. rather striking were two positive reactions to aeschynantus pulcher (family: gesneriaceae), it is not sure if aeschynantus really has sensitizing properties. more investigations about handeczema caused by contact with aeschynantus has to be performed. | 1979 | 546619 |
| sensitivity to codiaeum variegatum. | | 1976 | 138521 |