| [transmissibility of cherry leaf-roll virus by seeds of sambucus racemosa l]. | | 1972 | 4679142 |
| antiviral screening of british columbian medicinal plants. | one hundred methanolic plant extracts were screened for antiviral activity against seven viruses. twelve extracts were found to have antiviral activity at the non-cytotoxic concentrations tested. the extracts of rosa nutkana and amelanchier alnifolia, both members of the rosaceae, were very active against an enteric coronavirus. a root extract of another member of the rosaceae, potentilla arguta, completely inhibited respiratory syncytial virus. a sambucus racemosa branch tip extract was also ve ... | 1995 | 8847882 |
| bioindicator plants for ambient ozone in central and eastern europe. | sixteen species of native detector plants for ambient ozone have been identified for use in central and eastern europe. they include the forbs alchemilla sp., astrantia major, centuarea nigra, centauria scabiosa, impatiens parviflora, lapsana communis, rumex acetosa and senecio subalpinus; the shrubs corylus avellana, cornus sanguinea and sambucus racemosa; the trees alnus incana, pinus cembra and sorbus aucuparia; and the vines humulus lupulus and parthenocissus quinquefolia. sensitivity to ozo ... | 2004 | 15046838 |
| potential bioindicator plant species for ambient ozone in forested mountain areas of central europe. | from 1993 to 2000, trees, shrubs, forbs and vines were evaluated for symptoms of probable ozone injury in the vicinity of passive ozone samplers or active ozone monitors in forest condition assessment networks in mostly mountainous regions, principally the carpathian mountain range, in the central european countries czech republic, poland, romania, slovakia and ukraine. each country was visited at least twice during the time period. over the course of eight seasons, 29 species of native plants w ... | 2002 | 12166662 |
| ozone exposure thresholds and foliar injury on forest plants in switzerland. | canton ticino in southern switzerland is exposed to some of the highest concentrations of tropospheric ozone in europe. during recent field surveys in canton ticino, foliar symptoms identical to those caused by ozone have been documented on native tree and shrub species. in europe, the critical ozone level for forest trees has been defined at an aot40 of 10 ppm.h o3 (10 ppm.h accumulated exposure of ozone over a threshold of 40 ppb) during daylight hours over a six-month growing season. the obje ... | 2001 | 11202736 |
| screening of selected plant extracts for in vitro inhibitory activity on hiv-1 reverse transcriptase (hiv-1 rt). | methanolic-aqueous extracts of 70 plants were investigated for their ability to inhibit hiv-1 reverse transcriptase activity in vitro. two thirds of the extracts screened showed more than 50% inhibition. two extracts inhibited the enzyme completely while four exhibited more than 90% inhibition. tannins as nonspecific hiv-1 rt inhibitors were detected and removed from the extracts. the ic50 values of the most potent extracts after the removal of tannins for the hiv-1 rt inhibition are as follows: ... | 2000 | 10683878 |
| contemporary use of bark for medicine by two salishan native elders of southeast vancouver island, canada. | elders of the saanich and cowichan coast salish people of southern vancouver island treat, or have treated in the recent past, many ailments with bark preparations. interviews with two elder salishan women revealed that: respiratory ailments were treated with bark of abies grandis, arbutus menziesii, cornus nuttallii, prunus emarginata, pseudotsuga menziesii and quercus garryana; digestive tract ailments with the bark of abies grandis, alnus rubra, arbutus menziesii, malus fusca. oemleria cerasi ... | 1990 | 2345461 |