The bovine papillomavirus type 2 (BPV-2) involvement in the aetiology of chronic enzootic haematuria associated to bracken fern ingestion has been suggested for a long time. However, a few reports have shown the presence of the BPV-2 in urinary bladder tumors of cattle. The aim of this study was to investigate the presence of the BPV-2 infection in the urinary bladder of cattle with chronic enz...

Abstract Key message Fifteen species are most susceptible to require vegetation control during tree regeneration in the range of our study. Among these 15 species, Rubus fruticosus , Pteridium aquilinum and Molinia caerulea cover each more than 300,000 ha open-canopy forests. Context Vegetation control, i.e., reduction competitive cover, is often required promote seedling establishment forest s...

Abstract Background Liquid suspension culture efficiently proliferates plant cells and can be applied to ferns because it rapidly increases the fresh weight of gametophytes. This study assessed gametophyte proliferation sporophyte production Pteridium aquilinum var. latiusculum using a method. Results The growth curve linear phase was confirmed between 9 18 days culture, subculture cycle determ...

Abstract Changes in soil chemistry after invasion by bracken (Pteridium aquilinum) have been studied heathlands, but comparable studies meadows are lacking. We investigated if into P-deficient alters the nutrient-resource pool, as well mechanisms behind it linked to processes and nutrition. Furthermore, we how community composition responds differences before invasion. Soil plant material sampl...

Urine from cattle fed fresh and dried bracken fern for more than 2 years and urine from control cattle was extracted with ethyl acetate and divided into nonacidic and acidic fractions. The residue obtained after removal of the solvent was mixed with 4 times its weight of cholesterol, and the mixture was converted to pellets with the aid of a pellet press. Pellets containing these residues were ...

latiusculum); its structure was elucidated in 1987. The same substance and several analogues have been identified in other Pteridacae. Bracken fern is currently consumed by farm animals, and this causes a number of well-known syndromes in domestic animals. In large ruminants, chronic enzootic haematuria, the clinical expression of multiple neoplasia of the urinary bladder, occurs. The occurrenc...