Combined Tolerance to Copper, Zinc and Lead by Populations of Agrostis Tenuis

Karataglis, S.

doi:10.2307/3544024

Cited by 16 publications

(10 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is in agreement with the findings of Hutchinson & Cox (1984), who discovered correlation coefiicients of 0'75 and 0-93 for a non-tolerant and a tolerant population, respectively. Karataglis (1982) also found a linear correlation between Zn and Pb tolerance in A. capillaris, and suggested a connection in the physiological mechanism. However, Humphreys & Nicholls (1984) observed no co-tolerance to Zn arising from Pb tolerance in Agrostis capillaris.…”

Section: The Interpretation Of Co-tolerance : Canadian Populationsmentioning

confidence: 77%

Occurrence of heavy metal tolerance and co‐tolerance in Deschampsia cespitosa (L.) Beauv. from European and Canadian populations

Frenckell-Insam

Hutchinson

1993

New Phytologist

View full text Add to dashboard Cite

By sampling soils and plants from a variety of metal-contaminated sites in Canada and Europe, heavy metal tolerance and co-tolerance have been investigated in the grass Deschampsia cespitosa L. (Beauv.). Soils were analyzed for water extractable Ca, as well as for their heavy metal content (Cu, Ni, Zn, Pb, Cd, Co), electrical conductivity, pH and organic matter. Canadian plant material was collected from non-contaminated areas, as well as sites contaminated by copper and nickel (Sudbury) and nickel and cobalt (Cobalt). European plants were sampled from reference sites and from zinc and lead contaminated locations (Bleikuhle, Pochsand/Germany).Using cloned material the ' in parallel' root elongation technique was employed to determine tolerance indices to individual metals (Cu, Ni, Zn, Pb). Among the Canadian plants, patterns of tolerances matched patterns of soil contamination. Thus, at the Cobalt sites, Cu was not present in elevated amounts, and the plants did not exhibit Cu tolerance. Also, evidence suggests that the close correlation of Cu and Ni tolerance among the Sudbury plants was not the result of Cu-Ni co-tolerance but occurred because ions of both metals were present in elevated amounts at these sites. In addition to the tolerances expected on soil chemistry, plants taken from metal contaminated sites exhibited enhanced tolerance also to metal ions not elevated in the soils of their origin. This is interpreted as general, non-specific, low level co-tolerance. Thus, most Cobalt and Sudbury plants exhibited incidental tolerance at a higher level to Zn and Pb. Correlation analysis revealed very close relations both between Zn and Pb, and especially between Ni and Zn, supporting findings from previous studies. It was concluded that among the Canadian populations tested in this study, Ni tolerance conferred Zn tolerance.Among the European plants examined, the expected tolerances to Zn and Pb were found. However, whereas some control plants from non-contaminated sites exhibited relatively high tolerances to these metal ions, the tolerance of plants from mines was lower than expected. The Zn and Pb tolerant mine populations had no tolerance to Cu and only very low tolerance to Ni, suggesting that the enhanced Zn tolerance associated with Ni tolerance in the Canadian plants is not necessarily reversible, i.e. Zn tolerance does not necessarily confer Ni tolerance.

show abstract

Section: The Interpretation Of Co-tolerance : Canadian Populationsmentioning

confidence: 77%

Occurrence of heavy metal tolerance and co‐tolerance in Deschampsia cespitosa (L.) Beauv. from European and Canadian populations

Frenckell-Insam

Hutchinson

1993

New Phytologist

View full text Add to dashboard Cite

show abstract

“…In contrast to Westschacht soils, Plombibres soils are also contaminated by very large amounts of zinc and, although multiple metal tolerance has been repeatedly reported (Cox and Hutchinson, 1980;Karataglis, 1982), interactions between different heavy metals and the combined effects on plants have not been examined to the same degree. In one study, Coughtrey and Martin (1978) found that in a population of Holcus lanatus, root extension was significantly increased with Zn/Cd combinations compared to the use of cadmium alone.…”

Section: Discussionmentioning

confidence: 99%

“…Exchangeable amounts of cations were extracted with 1 M ammonium acetate pH 7.0 for 2 hours. According to Ernst (1974;1982), this method gives the best indication of upper levels of heavy Heavy metal tolerance in Festuca ovina 241 metals available to plants. Total amounts, extracted in a mixture of HCI/HNO 3, were not determined.…”

Section: Soil Analysismentioning

confidence: 99%

“…During the course of the last 40 years, a wide range of investigations has been carried out into various aspects of heavy-metal tolerance in plants colonizing metalliferous areas (for reviews see Antonovics et al, 1971;Baker, 1987;Ernst, 1974;1982). It is generally accepted that the status of soil heavy-metal content determines the degree and nature of heavy-metal tolerance in plants.…”

Section: Introductionmentioning

confidence: 99%

“…Multiple metal tolerance is exhibited only when all metals concerned are available to plants in the soil at potentially toxic concentrations (Coughtrey and Martin, 1978;Karataglis, 1982) although exceptions do occur (Cox and Hutchinson, 1979;1981;Symeonidis et al, 1985). Furthermore, the extent to which metal tolerance is pronounced is dependent on the levels of metal present in the soil.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Heavy metal tolerance in Festuca ovina L. from contaminated sites in the Eifel Mountains, Germany

Brown

Brinkmann

1992

Plant Soil

View full text Add to dashboard Cite

Extremely high degrees of lead tolerance, measured by comparing rates of root extension in culture solutions, are reported from populations of Festuca ovina growing at two lead-mining sites (Westschacht and Keldenich-II) near Mechernich in the Eifel Mountains, Germany. Other populations from nearby heavy metal-contaminated areas show a considerably smaller degree of lead tolerance. Samples of Festuca ovina collected in the field at Westschacht and Keldenich-II contain higher levels of lead in their aerial organs than do those from other lead-contaminated sites. The main soil factor determining the high degree of lead tolerance is the high Pb/Ca ratio. Populations from soils with a low Pb/Ca ratio display a very low degree of tolerance. It is therefore concluded that in Westschacht and Keldenich-II plants, a genuine intracellular tolerance mechanism is present, allowing the accumulation of lead in aerial organs.Leaf samples of zinc-tolerant Festuca contain higher levels of zinc than do samples of non-tolerant plants. Lead and zinc amounts in leaves are correlated with the soil ratios of Pb/Ca and Zn/Ca, respectively, rather than with the absolute soil-metal levels.In a slightly lead-tolerant, but highly zinc-tolerant clone of Festuca ovina from a site contaminated with large amounts of lead and zinc (Plombi~res), lead was found to be the major factor affecting the inhibition of root extension with combined treatments of lead and zinc in culture solutions. In the highly lead-tolerant, zinc-sensitive population from Westschacht, zinc governs the response of root growth to combinations of the two metals. The results are discussed in terms of discriminating distinct types of heavy-metal tolerance.

show abstract

Interactive effects of cadmium, lead and zinc on root growth of two metal tolerant genotypes ofHolcus lanatus L.

Symeonidis

Karataglis

1992

Biometals

View full text Add to dashboard Cite

Combined Tolerance to Copper, Zinc and Lead by Populations of Agrostis Tenuis

Cited by 16 publications

References 10 publications

Occurrence of heavy metal tolerance and co‐tolerance in Deschampsia cespitosa (L.) Beauv. from European and Canadian populations

Occurrence of heavy metal tolerance and co‐tolerance in Deschampsia cespitosa (L.) Beauv. from European and Canadian populations

Heavy metal tolerance in Festuca ovina L. from contaminated sites in the Eifel Mountains, Germany

Interactive effects of cadmium, lead and zinc on root growth of two metal tolerant genotypes ofHolcus lanatus L.

Contact Info

Product

Resources

About