Certain fatty acids in the C(5) to C(18) range, at concentrations as low as 10(-5) M, were found to inhibit the germinations of spores of the sensitive fern, Onoclea sensibilis L. The addition of gametophytic culture flltrates of the bracken fern, Pteridium aquilinum (L.) Kuhn, containing antheridogen A, was found to overcome this inhibition and allow the spores to germinate and the gametophyte...

Malaria remains a major public health problem due to the emergence and spread of Plasmodium falciparum strains resistant to chloroquine. There is an urgent need to investigate new and effective sources of antimalarial drugs. This research proposed a novel method of fern-mediated synthesis of silver nanoparticles (AgNP) using a cheap plant extract of Pteridium aquilinum, acting as a reducing and...

1. Several cases of bracken poisoning in farm animals have been reported. The Committee was asked to consider the hazards to the health of consumers eating foods derived from bracken-poisoned animals, and whether there were sufficient data to establish how long poisoned animals should be left before they may safely be milked or slaughtered for human consumption. It was noted that bracken is eat...

Mechanical site preparation methods that used tools mounted on lightweight excavators and provided localised intensive were tested in eight experimental sites across France where the vegetation was dominated either by (L.) Moench or Kuhn. Two (Deep Scarifier: DS; Deep Scarifier followed Multifunction Subsoiler: DS+MS) pine ( L., var. (Loudon) Hyl. Aiton) oak (Matt.) Liebl. L.) plantations...

In order to identify the effect of P. arachnoideum, we studied 11 native tree species commonly used in reforestation projects. Bioassays were conducted in laboratory to evaluate the effect of bracken leachate on the germination and morphology of seedlings. Juveniles of some of these species were planted in two adjacent but contrasting areas in relation to the dominance of P. arachnoideum. The e...

Background Control of bracken (Pteridium aquilinum) is a global problem for livestock-based extensive agriculture, conservation, recreation, game management and forestry. Bracken is controlled primarily by application of asulam or by cutting. The success of bracken control may be dependent upon ecological variables (such as habitat type and latitude) and methodological variables (such as number...