PoulinSimardCatfordEtAl1997

Référence

Poulin, M.J., Simard, J., Catford, J.G., Labrie, F. and Piche, Y. (1997) Response of symbiotic endomycorrhizal fungi to estrogens and antiestrogens. Molecular Plant-Microbe Interactions, 10(4):481-487.

Résumé

Plant flavonoids reported previously to act as molecular signals in the arbuscular mycorrhizal (AM) symbiosis are known to bind to estrogen receptors and to exert Estrogenic effects on mammalian cells. To further investigate the estrogen-like properties of flavonoids the present study examined whether estrogen and antiestrogens have flavonoid-related functions in AM fungi. Bioassays were performed in a monoaxenic system with the AM fungi Gigaspora margarita and Glomus intraradices. The plant flavonoids quercetin and biochanin A stimulate hyphal growth of G. margarita and G, intraradices, respectively, The stimulatory activity of biochanin A studied at concentrations ranging from 0.01 to 10.0 mu M shows an estimated ECS, value of 3.26 mu M The present results show that 17 beta-estradiol and biochanin A exert similar stimulatory effects in G, intraradices. The agonist effect of biochanin A was efficiently suppressed by the new antiestrogen EM-652, which is also consistent with the possible presence of estrogen-binding sites in AM fungi.

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@ARTICLE { PoulinSimardCatfordEtAl1997,
    AUTHOR = { Poulin, M.J. and Simard, J. and Catford, J.G. and Labrie, F. and Piche, Y. },
    TITLE = { Response of symbiotic endomycorrhizal fungi to estrogens and antiestrogens },
    JOURNAL = { Molecular Plant-Microbe Interactions },
    YEAR = { 1997 },
    VOLUME = { 10 },
    PAGES = { 481-487 },
    NUMBER = { 4 },
    NOTE = { Times Cited: 15 Article English Cited References Count: 46 Wx523 },
    ABSTRACT = { Plant flavonoids reported previously to act as molecular signals in the arbuscular mycorrhizal (AM) symbiosis are known to bind to estrogen receptors and to exert Estrogenic effects on mammalian cells. To further investigate the estrogen-like properties of flavonoids the present study examined whether estrogen and antiestrogens have flavonoid-related functions in AM fungi. Bioassays were performed in a monoaxenic system with the AM fungi Gigaspora margarita and Glomus intraradices. The plant flavonoids quercetin and biochanin A stimulate hyphal growth of G. margarita and G, intraradices, respectively, The stimulatory activity of biochanin A studied at concentrations ranging from 0.01 to 10.0 mu M shows an estimated ECS, value of 3.26 mu M The present results show that 17 beta-estradiol and biochanin A exert similar stimulatory effects in G, intraradices. The agonist effect of biochanin A was efficiently suppressed by the new antiestrogen EM-652, which is also consistent with the possible presence of estrogen-binding sites in AM fungi. },
    KEYWORDS = { estrogenic activity vesicular-arbuscular mycorrhiza mediated intercellular communication root organ-culture gigaspora-margarita hyphal growth flavonoid compounds plant flavonoids invitro clover co2 },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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