Full TGIF Record # 24793
Item 1 of 1
Publication Type:
i
Refereed
Author(s):Brown, Gary; Brinkmann, Klaus
Author Affiliation:Botanical Institute, University of Bonn, Kirscchallee, Germany
Title:Heavy metal tolerance in Festuca ovina L. from contaminated sites in the Eifel Mountains, Germany
Source:Plant and Soil. Vol. 143, No. 2, June 1992, p. 239-247.
# of Pages:9
Publishing Information:Dordrecht, Netherland: Martinus Nijhoff Publishers
Related Web URL:http://link.springer.com/article/10.1007/BF00007879
    Last checked: 10/14/2015
    Notes: Abstract only
Keywords:TIC Keywords: Festuca ovina; Resistance; Heavy metals; Lead; Calcium; Zinc; Root elongation; Toxicity; Soil toxicity; Soil analysis; Clones
Abstract/Contents:"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 (Plombières), lead was found to be the major factor affecting the inhibition of root extension with combined treatments of lead and zinc in cluture solutions. In the hihgly 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."
Language:English
References:26
Note:Tables
Graphs
Geographic Terms:Germany
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Brown, G., and K. Brinkmann. 1992. Heavy metal tolerance in Festuca ovina L. from contaminated sites in the Eifel Mountains, Germany. Plant Soil. 143(2):p. 239-247.
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