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Influence of arbuscular mycorrhize on mercury uptake in corn

Ana Grašič (2014) Influence of arbuscular mycorrhize on mercury uptake in corn. Diploma thesis.

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    Abstract

    Idrija is the oldest mining town in Slovenia, famous for extracting mercury ore from the slate rock. The effects of the multiannual mining are numerous: the mining activity has affected the environment, the ground and the soil-quality, and it consequently represents a threat to the local inhabitants. The vegetation is the first natural element affected by toxic substances, which enter terrestrial ecosystems from the air, the soil or the water systems. The plants growing in this kind of environment have adapted to the circumstances by developing particular detoxification mechanisms. Mycorrhiza is a symbiotic association between fungi and higher plants, commonly found in the plants growing in natural environments, and especially typical for the plants growing in the areas contaminated with metals. The purpose of this diploma work was to study the influence of arbuscular mycorrhizal fungal inoculation on the mercury absorption of the corn and the growth of this corn. We also determined the content of photosynthetic pigments and estimated the AM colonisation level. The mercury concentration level was determined by Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The highest level of mercury was measured in the plants inoculated with the Idrija inoculum and in the roots of the plants growing in the substrate with the added bacterial extract of the Idrija inoculum. The concentration levels of mercury were higher in the roots than in the sprouts. The arbusculus density was the highest in the plants inoculated with the Idrija inoculum, and the vesicle density was the highest in the plants inoculated with the commercial inoculum. The biomass of root and sprout was the biggest in the plants inoculated with the Idrija inoculum without additional mercury.

    Item Type: Thesis (Diploma thesis)
    Keywords: mercury, Idrija, soil pollution, plants accumulation, arbuscular mycorrhiza
    Number of Pages: 76
    Language of Content: Slovenian
    Mentor / Comentors:
    Mentor / ComentorsIDFunction
    doc. dr. Katarina Vogel MikušMentor
    Link to COBISS: http://www.cobiss.si/scripts/cobiss?command=search&base=50126&select=(ID=10342473)
    Institution: University of Ljubljana
    Department: Faculty of Education, Biotechnical Faculty, Faculty of Chemistry and Chemical Technology, Faculty of Natural Sciences and Engineering
    Item ID: 2649
    Date Deposited: 10 Dec 2014 14:01
    Last Modified: 10 Dec 2014 14:01
    URI: http://pefprints.pef.uni-lj.si/id/eprint/2649

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