Pteridium

Glucuronomannans. Most glucuronomaimans occur as components of certain plant gums and are characterized by the presence of an 0-(P -D-glucurono-pyranosyl)-(1 2)-D-maimopyranosyl linkage ia the molecule (65). Less complex glucuronomaimans are found in the tissues of bracken Pteridium aquilinum) and in tobacco leaf cells where they may be part of the cultured cell wall (132) and exude into the medium in which the cells are grown (133). 

The toxic properties of Pteridium aquilinum L., the common bracken fern, have been known to humankind for a very long time. Two principal causes of trouble are its carcinogenic properties (M. Saito et al., 1975 I. A. Evans, 1976 Hirono, 1986)... 

AIonso-Amelot, M. E., OUveros, A. and Calcagno-PisareUi, M. P. 2004. PhenoUcs and condensed tannins in relation to altitude in neotropical Pteridium ssp. A field study in the Venezuelan Andes. Biochem. Syst. Ecol. 32 969-981. 

Fenwick, G. R. 1988. Bracken (Pteridium aquilinum). Toxic effects and toxic constituents. J. Sci. Pood Agile. 46 147-173. 

Niwa, H., Ojika, M., Wakamatsu, K., Yamada, K., Hirono, 1. and Matsushita, K. 1983. Ptaqui-loside, a novel norsesquiterpene glucoside from bracken, Pteridium aquilinum var. latiusculum. Tetrahedron lett. 24 4117-4120. 

Salto, M., Umeda, M., Enomoto, M., Hatanaka, Y., Natori, S., Yoshlhlra, K., Fukuoka, M. and Kuroyanagl, M. 1975. Cytotoxicity and carcinogenicity of pterosins and pterosides, 1-indanone derivatives and bracken fern Pteridium aquilinum). Experientia 31 824-831. 

Pterolactam (48) was isolated from bracken (Pteridium aquilinum Kuhn), a fern belonging to a monotypic genus (86). Its IR spectrum strongly resembles the IR spectrum of 2-pyrrolidone the structure of 48 was established by 1H-NMR spectroscopy. It is interesting to note that 48 possesses a weak but definitive optical rotation ([a]D —2.0°). 

Tyson, M.J., Sheffield, E., and Callaghan, T.V., 1999, Uptake, allocation, accumulation and ecological implications of Sr in bracken (Pteridium aquilinum L. Kuhn). J. Environ. Radioac. 46 15-25. 

It has been evidenced that auxin and ACC stimulate ethylene production in some lower plants, for example, in the moss Funaria hygrometrica and in the ferns Pteridium aquilinum and Matteuccia struthiopteris Moreover, ethylene synthesis via the ACC-dependent pathway and in the presence of endogenous ACC and its conjugate in marine unicellular Acetabularia algae was reported. Probably during the evolution of land plants, a relatively primitive pathway of ethylene production was replaced by the ACC-dependent synthesis pathway that now predominates. 

Tanzania. Rhizome is pound with the root of Pteridium aquilinum, and the juice taken orally as an aphrodisiac. Hot water extract of the rhizome is taken orally as a galact-... 

Rhamnoside-4 -glucoside Pteridium aquilinum aerial parts Dennstaedtiaceae 184... 

Imperato, F., Kaempferol 7-0-rhamnoside-4 -0-glucoside from Pteridium aquilinum. Phytochemistry, 47, 911, 1998. 

Imperato, F. and Minutiello, P., Kaempferol 3-0-(6"-caffeoylglucoside) from Pteridium aquilinum. 

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