AdelekeCloeteBertrandEtAl2012

Référence

Adeleke, R.A., Cloete, T.E., Bertrand, A., Khasa, D.P. (2012) Iron ore weathering potentials of ectomycorrhizal plants. Mycorrhiza, 22(7):535-544. (URL )

Résumé

Plants in association with soil microorganisms play an important role in mineral weathering. Studies have shown that plants in symbiosis with ectomycorrhizal (ECM) fungi have the potential to increase the uptake of mineral-derived nutrients. However, it is usually difficult to study many of the different factors that influence ectomycorrhizal weathering in a single experiment. In the present study, we carried out a pot experiment where Pinus patula seedlings were grown with or without ECM fungi in the presence of iron ore minerals. The ECM fungi used included Pisolithus tinctorius, Paxillus involutus, Laccaria bicolor and Suillus tomentosus. After 24 weeks, harvesting of the plants was carried out. The concentration of organic acids released into the soil, as well as potassium and phosphorus released from the iron ore were measured. The results suggest that different roles of ectomycorrhizal fungi in mineral weathering such as nutrient absorption and transfer, improving the health of plants and ensuring nutrient circulation in the ecosystem, are species specific, and both mycorrhizal roots and non-mycorrhizal roots can participate in the weathering process of iron ore minerals.

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@ARTICLE { AdelekeCloeteBertrandEtAl2012,
    AUTHOR = { Adeleke, R.A. and Cloete, T.E. and Bertrand, A. and Khasa, D.P. },
    TITLE = { Iron ore weathering potentials of ectomycorrhizal plants },
    JOURNAL = { Mycorrhiza },
    YEAR = { 2012 },
    VOLUME = { 22 },
    PAGES = { 535-544 },
    NUMBER = { 7 },
    ABSTRACT = { Plants in association with soil microorganisms play an important role in mineral weathering. Studies have shown that plants in symbiosis with ectomycorrhizal (ECM) fungi have the potential to increase the uptake of mineral-derived nutrients. However, it is usually difficult to study many of the different factors that influence ectomycorrhizal weathering in a single experiment. In the present study, we carried out a pot experiment where Pinus patula seedlings were grown with or without ECM fungi in the presence of iron ore minerals. The ECM fungi used included Pisolithus tinctorius, Paxillus involutus, Laccaria bicolor and Suillus tomentosus. After 24 weeks, harvesting of the plants was carried out. The concentration of organic acids released into the soil, as well as potassium and phosphorus released from the iron ore were measured. The results suggest that different roles of ectomycorrhizal fungi in mineral weathering such as nutrient absorption and transfer, improving the health of plants and ensuring nutrient circulation in the ecosystem, are species specific, and both mycorrhizal roots and non-mycorrhizal roots can participate in the weathering process of iron ore minerals. },
    DOI = { 10.1007/s00572-012-0431-5 },
    ISSN = { 0940-6360 },
    ISSUE = { 7 },
    KEYWORDS = { Ectomycorrhizal fungi; Iron ore; Biohydrometallurgy; Organic acids; Particle size; Weathering },
    OWNER = { amriv2 },
    PUBLISHER = { Springer-Verlag },
    TIMESTAMP = { 2012.11.22 },
    URL = { http://dx.doi.org/10.1007/s00572-012-0431-5 },
}

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