The mycorrhizal status of plants colonizing a calamine spoil mound in southern Poland

Arbuscular mycorrhizas contribute to phytostabilization of uranium in uranium mining tailings

“…The present study suggests that the mixing of soil into the tailing could represent an alternative solution, which would reduce quantities of soil needed and cost of transportation. Negative effects of heavy metal contamination on mycorrhizal colonization and fungal growth were observed in field survey and sometimes in greenhouse-based experiments (Griffioen, 1994;Pawlowska et al, 1996;Liu et al, 2000;Bi et al, 2003). The inhibitory effects of U tailing on the development of extraradical mycelium also indicated unfavorable environments for the symbionts.…”

The role of arbuscular mycorrhiza in zinc uptake by red clover growing in a calcareous soil spiked with various quantities of zinc

“…Some studies have shown a positive impact of infection by arbuscular mycorrhizal fungi on the resistance of the host plants to Zn contamination of soils (Heggo et al, 1990;Hetrick et al, 1994;Zhu et al, 2001). The widespread existence of AM fungi in metal contaminated sites has also provided evidence of adaptation and tolerance of microorganisms to toxic metals (Shetty et al, 1995;Pawlowska et al, 1996), and metal tolerant fungi have been isolated (Raman et al, 1993;Griffioen, 1994;Weissenhorn et al, 1993Weissenhorn et al, , 1994Hildebrandt et al, 1999). The feasibility of employing AM in soil re-vegetation and remediation has elicited great interest, and numerous studies have focused on the functions of AM fungi in metal-contaminated soils (Vangronsveld et al, 1996;Leyval et al, 1997;Khan et al, 2000).…”

Uptake of cadmium from an experimentally contaminated calcareous soil by arbuscular mycorrhizal maize ( Zea mays L.)

“…Although the initial plant colonizers of heavy metal-contaminated sites are often species tolerant to extreme conditions and tend to be nonmycorrhizal (Shetty et al 1994), they may increase soil organic matter content, modify the soil microclimate and promote conditions conducive to the establishment of species with stronger mycorrhizal dependence . Mycorrhizas have recently been reported in plants growing on heavy metal-contaminated sites (Shetty et al 1995;Weissenhorn and Leyval 1995;Pawlowska et al 1996;Chaudhry et al 1999), and metal-tolerant fungal strains have been isolated (Griffioen 1994;Weissenhorn et al 1993Weissenhorn et al , 1994Hildebrandt et al 1999). Alleviation of heavy metal phytotoxicity by arbuscular mycorrhiza has been indicated in several studies (Schüepp et al 1987;Heggo et al 1990;Zhu et al 2001;Chen et al 2003).…”