VimardSt-ArnaudFurlanEtAl1999

Référence

Vimard, B., St-Arnaud, M., Furlan, V. and Fortin, J.A. (1999) Colonization potential of in vitro-produced arbuscular mycorrhizal fungus spores compared with a root-segment inoculum from open pot culture. Mycorrhiza, 8(6):335-338.

Résumé

A reliable inoculum, free from other microorganisms, to produce arbuscular mycorhizal (ARI) plants is of the greatest importance when studying the interaction between AM plants and soil microorganisms, We investigated the colonization of leeks from monoxenic in vitro-produced Glomus intraradices spores. The isolated spores were produced using a two-compartment in vitro growth system previously described. A spore suspension was used as inoculum and was compared to the inoculum potential of endomycorrhizal root segments of pot-grown leek (Allium porrum L.) plants. The leeks were grown in a controlled environment and two types of sterilized growth media were tested. calcined montmorillonite clay and a soil mix. Root colonization progressed faster in the soil mix than in the clay. However, in this medium, after an initial delay, root colonization from in vitro-produced spores was essentially the same as that observed with the root-segment inoculum, reaching 44% and 58% respectively, after 16 weeks. Leek roots colonized by the monoxenically-produced spores harbored only the studied AMF fungi while the roots colonized from the root segments were substantially contaminated by other fungi.

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@ARTICLE { VimardSt-ArnaudFurlanEtAl1999,
    AUTHOR = { Vimard, B. and St-Arnaud, M. and Furlan, V. and Fortin, J.A. },
    TITLE = { Colonization potential of in vitro-produced arbuscular mycorrhizal fungus spores compared with a root-segment inoculum from open pot culture },
    JOURNAL = { Mycorrhiza },
    YEAR = { 1999 },
    VOLUME = { 8 },
    PAGES = { 335-338 },
    NUMBER = { 6 },
    NOTE = { Vimard, B St-Arnaud, M Furlan, V Fortin, JA },
    ABSTRACT = { A reliable inoculum, free from other microorganisms, to produce arbuscular mycorhizal (ARI) plants is of the greatest importance when studying the interaction between AM plants and soil microorganisms, We investigated the colonization of leeks from monoxenic in vitro-produced Glomus intraradices spores. The isolated spores were produced using a two-compartment in vitro growth system previously described. A spore suspension was used as inoculum and was compared to the inoculum potential of endomycorrhizal root segments of pot-grown leek (Allium porrum L.) plants. The leeks were grown in a controlled environment and two types of sterilized growth media were tested. calcined montmorillonite clay and a soil mix. Root colonization progressed faster in the soil mix than in the clay. However, in this medium, after an initial delay, root colonization from in vitro-produced spores was essentially the same as that observed with the root-segment inoculum, reaching 44% and 58% respectively, after 16 weeks. Leek roots colonized by the monoxenically-produced spores harbored only the studied AMF fungi while the roots colonized from the root segments were substantially contaminated by other fungi. },
}

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