| allergic and irritant contact dermatitis from falcarinol and didehydrofalcarinol in common ivy (hedera helix l.). | experimental and chemical investigations revealed that common ivy (hedera helix susp. helix) contains 3 compounds which are powerful irritants and moderate sensitizers. only 2 of these constituents, falcarinol and didehydrofalcarinol, are present in the plant during the whole year. besides panax ginseng and schefflera arboricola, this is the third species of the araliaceae in which these polyacetylenic sensitizers have been found. falcarinol and didehydrofalcarinol also occur in hedera helix sub ... | 1987 | 3652685 |
| studies on water transport through the sweet cherry fruit surface: ix. comparing permeability in water uptake and transpiration. | water uptake and transpiration were studied through the surface of intact sweet cherry (prunus avium l.) fruit, exocarp segments (es) and cuticular membranes (cm) excised from the cheek of sweet cherry fruit and astomatous cm isolated from schefflera arboricola (hayata) hayata, citrus aurantium l., and stephanotis floribunda brongn. leaves or from lycopersicon esculentum mill. and capsicum annuum l. var. annuum fasciculatum group fruit. es and cm were mounted in diffusion cells. water (deionized ... | 2005 | 15338307 |
| an external heat pulse method for measurement of sap flow through fruit pedicels, leaf petioles and other small-diameter stems. | the external heat ratio method is described for measurement of low rates of sap flow in both directions through stems and other plant organs, including fruit pedicels, with diameters up to 5 mm and flows less than 2 g h(-1). calibration was empirical, with heat pulse velocity (v(h)) compared to gravimetric measurements of sap flow. in the four stem types tested (actinidia sp. fruit pedicels, schefflera arboricola petioles, pittosporum crassifolium stems and fagus sylvatica stems), v(h) was linea ... | 2009 | 19671100 |
| heterogeneity of xanthomonas campestris pv. hederae strains from araliaceous hosts. | abstract xanthomonas campestris pv. hederae (synonym x. hortorum pv. hederae) strains (59 total) were collected from plants in the araliaceae family. strains were isolated from hedera helix, schefflera arboricola, brassaia actinophylla, and polyscias spp. from florida, california, hawaii, and new zealand. all strains produced yellow mucoid growth; hydrolyzed esculin, starch, casein and gelatin; were pectolytic; produced urease; and grew on minimal media containing asparagine. all bacterial strai ... | 1999 | 18944676 |
| flavonoid-peroxidase reaction as a detoxification mechanism of plant cells against h2o2. | recent studies have revealed that dietary flavonoids are potent radical scavengers, acting in a manner similar to ascorbate and [alpha]-tocopherol. however, it is still not clear whether flavonoids have a similar antioxidative function in plants. we examined the possibility that flavonoids could function as stress protectants in plant cells by scavenging h2o2. two major flavonoids, quercetin and kaempferol glycosides, were isolated from leaves of the tropical tree schefflera arboricola hayata. b ... | 1997 | 12223873 |
| the allergens of dendropanax trifidus makino and fatsia japonica decne. et planch. and evaluation of cross-reactions with other plants of the araliaceae family. | cis-9,17-octadecadiene-12,14-diyne-1,16-diol (i), an analog of falcarinol has been identified in our previous report as an active component of dendropanax trifidus and a strong sensitizer. in this report, 16-hydroxy-cis-9,17-octadecadiene-12,14-diynoic acid (ii) and cis-9,trans-16-octadecadiene-12,14-diynoic acid (iii) were elucidated as 2 other active components of the plant. compound i, however, presented with the highest concentration and showed a stronger reaction on patch testing. the leave ... | 1999 | 10208509 |