Development of salix and populus mycorrhizae in metallic mine tailings

Harris, M.; Jürgensen, Martin F.

doi:10.1007/bf00011507

Cited by 30 publications

(18 citation statements)

References 7 publications

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“…At the intraspecific level, several authors have reported the existence of strains of both ectomycorrhizal, (Harris & Jurgensen, 1977) and vesiculararbuscular (VA) mycorrhizal fungi, (Lambert, Cole & Baker, 1980), which were specifically adapted to local edaphic conditions. Adaptation can be expressed in the present context as a differential ability of ectomycorrhizal associates of Betula to grow on agar containing raised zinc concentrations (Brown & Wilkins, 1985b), or of VA mycorrhizal strains to infect potential hosts in the presence of zinc (Gildon & Tinker, 1981, 1983.…”

Section: Introductionmentioning

confidence: 99%

ZINC TOLERANCE IN BETULA SPP.

Denny

Wilkins

1987

New Phytologist

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SUMMARYA survey was made of fungi forming ectomycorrhizas with Betula pendula Roth, and B. pubescens Ehrh. on zinc-contaminated mine tailings. Strains of Paxillus involutus Fr. from toxic and non-toxic soils were compared. There was no indication of fungal adaptation to zinc at either the inter-or intraspecific level. Most of the typical fungal associates of Betula on normal soils were also found on the zinc-rich soils. The ability of different strains of P. involutus to (a) grow in pure culture on agar, (b) form ectomycorrhizas with Betula, and (c) produce a beneficial growth and zinc uptake response in the associated plant, all in the presence of raised zinc concentrations, was not related to the zinc status of the provenance. The ameliorating influence of P. involutus on zinc toxicity to Betula seemed to be positively linked to the degree of compatibility between fungal strain and higher plant.

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Section: Introductionmentioning

confidence: 99%

ZINC TOLERANCE IN BETULA SPP.

Denny

Wilkins

1987

New Phytologist

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“…from the U.K. (Brown & Wilkins, 1985). Under metal-contaminated field conditions, ectomycorrhizas may either fail to form, or the mycobiont involved may change (Gobi & Pumpel, 1973;Harris & Jurgensen, 1977).…”

Section: Introductionmentioning

confidence: 99%

THE EFFECT OF MYCORRHIZAL INFECTION ON THE RESPONSE OF BETULA PAPYRIFERA TO NICKEL AND COPPER

1986

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SUMMARYThe role of ectomycorrhizas in the metal tolerance of birch seedlings from Sudbury, Ontario was investigated. Betula papyrifera Marsh, is one of the few tree species able to survive in the copper-and nickel-polluted area near Sudbury. Two types of birch seedlings were tested; those inoculated with Laccaria proxima (Boud.) Pat., Lactarius hibbardae Peck, Lactarius rufus (Scop, ex Fr.) Fries, or Scleroderma fiavidum E. & E. isolates originating from the Sudbury area, and those which were not inoculated. Once the seedlings were infected, they were grown in sand culture containing 34 or 85 fiM Ni, 32 or 63 fiM Cu, or a control solution. At the low nickel concentration, the mycorrhizal plants, especially those infected with S. fiavidum, grew significantly better than did non-mycorrhizal plants. At the higher nickel concentration, S.flaviduminfected seedlings weighed 86 % of controls without nickel, while the other seedlings weighed only 52 to 61 % of control. The good growth of 5. fiavidum-'mfected birch seedlings may have been due to retention of nickel in the mycorrhizas. These seedlings had the highest root nickel contents and the lowest stem nickel contents. At the high concentration of copper, growth of the mycorrhizal seedlings was significantly reduced compared with the non-mycorrhizal seedlings. This reduction in growth of infected seedlings did not relate to an increase in the uptake or translocation of copper. Under the low copper treatment, infection with mycorrhizal fungi did not affect seedling growth. The potential role of iron and phosphorus in affecting host metal tolerance was investigated. Changes in the tissue concentrations of these elements did not relate to the effect of the fungi on metal tolerance.

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“…compared to noninoculated seedlings. Harris and Jurgensen (1977) found that cuttings of willow and hybrid poplar grew poorly on copper tailings in comparison to better growt.h on iron tailings. Better seedling growth and development on iron tailings in comparison to copper tailings was due to increased ectomycorrhizal development, better soil fertility and/or fewer toxic chemicals.…”

Section: Investigations Ofmentioning

confidence: 97%