The influence of mycorrhiza and EDTA application on heavy metal uptake by different maize varieties

• Autorzy: Jurkiewicz A. , Orlowska E. , Anielska T. , Godzik B. , Turnau K.
• Języki publikacji: EN

Abstrakty

EN

This study investigated whether mycorrhizal colonization influences heavy metal uptake by maize. Two experiments were carried out. In the first, 15 commercially available maize varieties cultured on industrial waste substratum and inoculated or not with Glomus intraradices, were treated one week before harvest with EDTA, a chelating agent known to mobilize heavy metals in soil. Estimation of mycorrhizal parameters indicated differences between varieties, but differences between treatments of the same variety generally were not statistically significant. Although EDTA treatment strongly decreased the activity of fungal alkaline phosphatase (indicator of fungal viability), the treatment did not totally eliminate arbuscular mycorrhizal fungi (AMF) from the soil. The appearance of AMF structures within roots was modified in plants cultivated in EDTA-treated soil. Among the heavy metals studied, the highest impact of EDTA treatment on heavy metal uptake in shoots was found in the case of Pb. In most cases, EDTA treatment significantly increased the Pb level in shoots of mycorrhizal plants. Among the samples treated with EDTA, mycorrhizal plants of 6 cultivars showed higher Pb content in shoots than did nonmycorrhizal plants. Significant differences in heavy metal content in plant material were demonstrated between the varieties tested. In the second experiment, one selected cultivar was subjected to high soil Pb concentrations and to EDTA for one week, following cultivation in nonpolluted substratum. In this case, EDTA treatment more strongly influenced Pb uptake by nonmycorrhizal than by mycorrhizal plants. The results indicate the need to carefully screen cultivars as well as microorganism strains to be used in phytoextraction procedures.

Słowa kluczowe

EN

mycorrhiza; heavy metal; maize variety; ethylene diamine tetra acetic acid; application; phytoremediation; metal uptake

• Wydawca: -
• Czasopismo: Acta Biologica Cracoviensia. Series Botanica
• Rocznik: 2004
• Tom: 46
• Opis fizyczny: p.7-18,fig.,ref.

Twórcy

autor

Jurkiewicz A.

• Jagiellonian University, Lubicz 46, 31-512 Krakow, Poland

autor

Orlowska E.

autor

Anielska T.

autor

Godzik B.

autor

Turnau K.

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