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Ericoid mycorrhizal fungi from heavy metal polluted soils: their identification and growth in the presence of zinc ions

Published online by Cambridge University Press:  01 March 2000

Elena MARTINO ,
Katarzyna TURNAU ,
Mariangela GIRLANDA ,
Paola BONFANTE  and
Silvia PEROTTO
Elena MARTINO
Affiliation:
Dipartimento di Biologia Vegetale dell’Università di Torino and Centro di Micologia del Terreno del CNR, V.le Mattioli 25, 10125 Torino, Italy
Katarzyna TURNAU
Affiliation:
Department of Plant Taxonomy and Phytogeography, Institute of Botany of the Jagiellonian University, ul. Lubicz 46, PL-31-512 Cracow, Poland
Mariangela GIRLANDA
Affiliation:
Dipartimento di Biologia Vegetale dell’Università di Torino and Centro di Micologia del Terreno del CNR, V.le Mattioli 25, 10125 Torino, Italy
Paola BONFANTE
Affiliation:
Dipartimento di Biologia Vegetale dell’Università di Torino and Centro di Micologia del Terreno del CNR, V.le Mattioli 25, 10125 Torino, Italy
Silvia PEROTTO
Affiliation:
Dipartimento di Biologia Vegetale dell’Università di Torino and Centro di Micologia del Terreno del CNR, V.le Mattioli 25, 10125 Torino, Italy
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Abstract

Ericoid mycorrhizal fungi can alleviate heavy metal toxicity to their host plant, but the mechanisms that lie behind this increased tolerance are unknown. As a first step in the characterisation of two isolates of Oidiodendron maius from mycorrhizal roots of Vaccinium myrtillus growing in heavily contaminated soils, we investigated their taxonomic position, their mycorrhizal capabilities and their ability to grow in the presence of heavy metals. When growth was compared with isolates from non-polluted soils, a better performance was observed in the presence of increasing concentrations of zinc salts, especially at higher ion concentrations. The mechanisms of tolerance may include the production of mucilage and extracellular pigments.

Type
Research Article
Information
Mycological Research , Volume 104 , Issue 3 , March 2000 , pp. 338 - 344
Copyright
© The British Mycological Society 2000

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