LaroseChenevertMoutoglisEtAl2002

Référence

Larose, G., Chenevert, R., Moutoglis, P., Gagne, S., Piche, Y. and Vierheilig, H. (2002) Flavonoid levels in roots of Medicago sativa are modulated by the developmental stage of the symbiosis and the root colonizing arbuscular mycorrhizal fungus. Journal of Plant Physiology, 159(12):1329-1339.

Résumé

Abundant data on the effect of flavonoids on spore germination, hyphal growth and root colonization by AMF are available. Moreover, the flavonoid pattern in mycorrhizal roots changes, thus flavonoids have been suggested as arbuscular mycorrhizal signalling compounds. In our work we studied the accumulation of flavonoids in roots of Medicago sativa i) after the exposure of uncolonized roots to sterile solutions containing Glomus intraradices tissue, ii) at three different stages of colonization by G. mosseae, iii) colonized by G. mosseae, G. intraradices or Gigaspora rosea. We could show that flavonoid accumulation in M. sativa roots i) is induced before root colonization, pointing towards the presence of a fungal-derived signal, ii) depends on the developmental stage of the symbiosis and iii) depends on the root-colonizing arbuscular mycorrhizal fungus. The data presented indicate not only a time-specificity of the flavonoid accumulation during the mycorrhizal association, but also an arbuscular mycorrhizal fungal-specificity. The possible functions of the flavonoid pattern changes are discussed.

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@ARTICLE { LaroseChenevertMoutoglisEtAl2002,
    AUTHOR = { Larose, G. and Chenevert, R. and Moutoglis, P. and Gagne, S. and Piche, Y. and Vierheilig, H. },
    TITLE = { Flavonoid levels in roots of Medicago sativa are modulated by the developmental stage of the symbiosis and the root colonizing arbuscular mycorrhizal fungus },
    JOURNAL = { Journal of Plant Physiology },
    YEAR = { 2002 },
    VOLUME = { 159 },
    PAGES = { 1329-1339 },
    NUMBER = { 12 },
    NOTE = { Times Cited: 16 Article English Cited References Count: 50 644hu },
    ABSTRACT = { Abundant data on the effect of flavonoids on spore germination, hyphal growth and root colonization by AMF are available. Moreover, the flavonoid pattern in mycorrhizal roots changes, thus flavonoids have been suggested as arbuscular mycorrhizal signalling compounds. In our work we studied the accumulation of flavonoids in roots of Medicago sativa i) after the exposure of uncolonized roots to sterile solutions containing Glomus intraradices tissue, ii) at three different stages of colonization by G. mosseae, iii) colonized by G. mosseae, G. intraradices or Gigaspora rosea. We could show that flavonoid accumulation in M. sativa roots i) is induced before root colonization, pointing towards the presence of a fungal-derived signal, ii) depends on the developmental stage of the symbiosis and iii) depends on the root-colonizing arbuscular mycorrhizal fungus. The data presented indicate not only a time-specificity of the flavonoid accumulation during the mycorrhizal association, but also an arbuscular mycorrhizal fungal-specificity. The possible functions of the flavonoid pattern changes are discussed. },
    KEYWORDS = { arbuscular mycorrhiza flavonoid glomales medicago sativa signalling specificity pathogen rhizoctonia-solani laser-scanning microscopy defense response glomus-mosseae alfalfa roots soybean roots isoflavonoid accumulation systemic suppression am fungi colonization },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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